Semiconductors for Digital Audio designer's guide August 1997 Philips Semiconductors DIGITAL AUDIO DESIGNER'S GUIDE 1 Contents Section Page 1 INTRODUCTION ............................................................................................................................................1-2 Review of ICs ..........................................................................................................................................1-3 2 DIGITAL AUDIO CONVERTERS ..................................................................................................................2-1 Introduction to audio conversion techniques ..................................................................................2-2 Main application areas of digital audio converters ..........................................................................2-4 Survey of digital audio converters ......................................................................................................2-5 DACs ......................................................................................................................................................2-10 ADCs ......................................................................................................................................................2-27 CODECs ................................................................................................................................................2-28 3 DEDICATED SIGNAL PROCESSORS ..........................................................................................................3-1 Introduction to audio MPEG ................................................................................................................3-2 Audio MPEG ICs ....................................................................................................................................3-3 PASC ICs ..................................................................................................................................................3-8 Miscellaneous ICs..................................................................................................................................3-10 Appendices 1 Documentation..................................................................................................................................................A-2 2 Index of type numbers ....................................................................................................................................A-4 NOTE Purchase of Philips I2C components conveys a license under the Philips I2C patent to use the components in the I2C system, provided the system conforms to the I2C specifications defined by Philips. Digital Audio 1-1 INTRODUCTION PHILIPS' IC SOLUTIONS FOR DIGITAL AUDIO CONVERSION AND PROCESSING 1 This guide supplements Data Handbook IC01 (Semiconductors for Radio and Audio systems) to provide a simple means of evaluating the features and performance of the extensive range of Philips' audio data converters and dedicated signal processing ICs. Digital audio data converters Philips scored a first in 1987 by developing the bitstream data conversion technique which converts binary samples of an analog audio signal into a 1-bit code using oversampling, noise shaping and pulse density modulation (PDM). Compared with multi-bit DACs, our bitstream conversion DACs have improved small-signal linearity, no "glitches" and no crossover distortion effects. We have a wide range of DACs of this type plus digital filters for, noise shaping, digital filtering and post filtering requirements of all classes of digital audio equipment. We also have a wide selection of conventional 16-bit DACs and a quadruple sign-magnitude filter DAC (QDAC) for front and rear stereo in car applications. Our range of audio data convertors s is completed with four bitstream ADCs and a range of advanced CODECs. Data transfer in digital audio systems Exchanging audio data between ICs in a digital audio system is often hampered because each manufacturer incorporates his own dedicated interface. This makes it difficult to use ICs from different manufacturers in the same system. For maximum design flexibility, a vital requirement for both the equipment manufacturer and the IC manufacturer is the availability of standardized communication structures. To meet this requirement, Philips developed the Inter-IC Sound (I2S) interface. The I2S-interface The I2S-interface is a serial link dedicated to data transfer between ICs in digital audio systems. Signals other than audio data, such as sub-coding and control, are transferred separately. To minimize the number of pins, and to keep the wiring simple, I2S is a serial interface consisting of 3 lines; serial data (SD) for two time-division multiplexed channels, left/right channel word select (WS), and serial clock (SCL). The transmitter and receiver have the same clock signal for data transmission. In a simple two-IC system, the master (transmitter or receiver), must generate the bit clock and word select signal, and the transmitter generates the data. MPEG decoders As one of the members of MPEG, Philips is playing an active role in developing and refining MPEG compression standards. The depth of Philips expertise is reflected in the quality of its MPEG ICs, which implement the standards in full, delivering excellent decompression audio quality. Philips has a family of dedicated audio MPEG-1 and MPEG-2 decoders including a version for decoding MPEG II 7.1, 5.1 and 2 channels. Other important dedicated Philips products for digital audio systems include a digital input/output circuit (DAIO), a general digital input circuit (GDIN), a digital audio processing IC (DAPIC), and a headphone driver. 1-2 Customer support Naturally, Philips Semiconductors support for digital audio data converters and dedicated signal processing ICs doesn't end with the supply of this extensive range of ICs described in this guide. We also offer access to the wide-ranging expertise of our international system laboratories to assist with your hardware/software designs for specific applications. Should you require further information, please contact your nearest Philips National Organisation - you'll find their addresses on the back cover of this guide. Digital Audio INTRODUCTION Review of ICs DESCRIPTION 1 TYPE NUMBER PAGE DIGITAL-TO-ANALOG CONVERTERS Bitstream filter DACs UDA1320TZ Low-voltage low-cost bitstream filter DAC 2-10 UDA1321T Bitstream USB DAC 2-12 UDA1322TS Low-voltage bitstream filter DAC with DSP 2-10 UDA1324TS Ultra low-voltage bitstream filter DAC 2-10 TDA1305T(AT) Bitstream CC-Stereo 1fs 2-13 TDA1388T Bitstream CC-DAC for CD-ROM audio applications 2-14 TDA1548T Bitstream CC-DAC with headphone driver 2-15 Stereo 4fs bitstream CC-DAC 2-16 TDA1306T Continuous Calibration noise shaping filter DAC 2-17 TDA1386T Continuous Calibration noise shaping filter DAC 2-17 TDA1310A(AT) Stereo CC-DAC with current output 2-18 TDA1311A(AT) Stereo CC-DAC with voltage output 2-20 TDA1312A(AT) Stereo CC-DAC with voltage output 2-20 TDA1313(T) Stereo CC-DAC with voltage output 2-20 TDA1387T Stereo CC-DAC with current output 2-18 TDA1545A(AT) Stereo CC-DAC with current output 2-18 Quadruple filter DAC 2-22 TDA1541A Stereo high-performance 16-bit DAC 2-23 TDA1541A/S1 Stereo high-performance 16-bit DAC 2-23 TDA1541A/S2 Stereo high-performance 16-bit DAC 2-23 TDA1541A/R1 Stereo high-performance 16-bit DAC 2-23 TDA1543(T) Dual 16-bit DAC (economy version) 2-24 TDA1547 Dual top-performance bitstream DAC 2-25 TDA1307 High-performance bitstream digital filter 2-26 SAA7360GP Bitstream conversion ADC 2-27 SAA7366T Bitstream conversion ADC 2-27 SAA7367T Bitstream conversion ADC 2-27 Bitstream Continuous Calibration filter DACs Bitstream Continuous Calibration DAC TDA1549T Continuous Calibration filter DACs Continuous Calibration DACs Quadruple sign-magnitude filter-DAC TDA1314T Sixteen-bit DACs Bitstream DAC ANALOG-TO-DIGITAL CONVERTERS Digital Audio 1-3 INTRODUCTION 1 DESCRIPTION TYPE NUMBER PAGE ANALOG-TO-DIGITAL/DIGITAL-TO-ANALOG CONVERTERS Universal Serial Bus UDA1325T USB ADC/DAC 2-28 UDA1340M Low-power stereo ADC/DAC with DSP features 2-30 UDA1341TS Low-power stereo ADC/DAC with DSP features 2-30 TDA1309H Low-power stereo bitstream ADC/DAC 2-32 UDA1309H Low-power stereo bitstream ADC/DAC 2-32 Low-power with DSP Low-power AUDIO MPEG ICs SAA2502 Audio decoder 3-3 SAA2503 Audio decoder 3-4 SAA2505 DUET 3-5 SAA2520GP Stereo filter and CODEC 3-6 SAA2521GP Masking threshold processor 3-7 SAA2003H Stereo filter and CODEC 3-8 SAA2013H Adaptive allocation and scaling 3-9 PASC ICs MISCELLANEOUS DEDICATED SIGNAL PROCESSING ICs SAA7740H Digital audio processor 3-10 TDA1308T Headphone driver 3-11 SAA7710T Dolby surround sound circuit 3-12 TDA1315H Digital audio input/output circuit 3-13 TDA1373H General digital input circuit 3-14 1-4 Digital Audio 2 DIGITAL AUDIO DATA CONVERTERS Digital Audio 2-1 DIGITAL AUDIO DATA CONVERTERS 2 Standard 16-bit DACs Essential functions in digital audio equipment are the analog-todigital conversion (ADC), and the digital-to-analog conversion (DAC). These signal processing stages play a major and critical role by converting audio signals into 16-bit sound data words (ADC), and by converting 16-bit sound data words which have been numerically decoded and filtered, into analog waveforms which can be made audible (DAC) With these DACs, the ten lowest bits are derived from a reference current by means of a passive 10-bit current divider based on emitter scaling. The six highest bits are constructed by dynamic element matching (DEM), a technique patented by Philips. As shown in the figure below, DEM uses matched resistors to divide a reference input current into four nearly equal parts. Under control of an internal shift register, the four currents are interchanged with a frequency of 250 kHz from an internal oscillator. After time-averaging, the resulting four output currents are very closely matched. Philips has developed an extensive range of stereo data converters using several different conversion techniques to meet the diverse requirements of the digital audio market: * Standard 16-bit stereo DACs * Bitstream conversion stereo ADCs and DACs for top-class audio performance * Continuous calibration stereo DACs which are the world's smallest converters with the lowest power consumption * Stereo filter-DACs that use bitstream conversion for small signals, and the continuous calibration technique for large signals * A quadruple sign-magnitude filter-DAC for 4-channel (front and rear stereo) digital audio applications in cars * Bitstream conversion ADCs * Combined stereo bitstream ADCs with digital filter and bitstream/continuous calibration DACs * Universal Serial Bus (USB) DAC and CODEC for USBcompliant audio and multimedia applications. LSB BIT 1 10 INTRODUCTION Two of the four output currents generated in the first DEM stage are added to form the largest (MSB = bit 16) bit current. The third output current forms the second largest (MSB - 1 = bit 15) bit current. The fourth output current is fed into the next DEM stage to construct bits 13 and 14. Similarly, the fourth output current from the second DEM stage is fed into the final DEM stage to construct bits 11 and 12. The fourth output current from the final DEM stage is fed to the passive 10-bit current divider to construct the 10 LSBs (bits 1 to 10). In this manner, all sixteen bit currents are derived from the same current reference. 11 12 13 14 MSB BIT 16 15 10 - BIT CURRENT - DIVIDER SHIFT REGISTER Structure of a high-performance 16-bit DAC. The binary-weighted current network derives the 16 most-significant bit currents from the reference current source. The 10 least-significant bit currents originate from the passive divider. The 6 most-significant bit currents are generated by time-averaging in the 3 Dynamic Element Matching (DEM) sections. 2-2 MBA859 I ref Digital Audio DIGITAL AUDIO DATA CONVERTERS The bitstream conversion technique The bitstream digital-to-analog conversion technique, developed by Philips, converts binary samples (e.g. 16-bit words) into a 1-bit code representing two levels (0 or 1) using oversampling, noise shaping and pulse density modulation (PDM). This code is then converted into an analog form that closely resembles the original signal by a switched-capacitor conversion technique. Because bitstream converters process the signal in the digital domain, they have the following advantages over conventional multi-bit converters: * Considerable improvement of small-signal linearity * Absence of glitches * Complete elimination of cross-over effects. INTRODUCTION The basic operation of a CC-DAC (see figure below) consists of continuous cycles of calibrating the drain current of CMOS transistors to a reference current, and then extracting an exact duplicate of the reference current from the drain. During calibration, the MOS transistor is connected as a diode in parallel with its gate-source capacitance by linking its drain and gate. The drain of this diode-connected transistor is connected to a constant reference current source so that the intrinsic gatesource capacitance charges to a voltage determined by the characteristics of the transistor. The drain-gate link and reference current source are then disconnected and, since the charge on the intrinsic gate-source capacitance of the transistor is preserved, an exact duplicate of the reference current is available as an output at the drain. Continuous calibration DACs (CC-DACs) Continuous calibration is an innovative data conversion technique patented by Philips and implemented in our new range of CMOS CC-DACs for cost-effective D to A conversion in portable equipment. The technique of continuous calibration is based on the principle of storing charges on the gate-source capacitance of internal CMOS transistors. This charge storage principle allows the largest bit currents to be generated repeatedly from a single reference current. Because only one internal reference source is required, these coarse bit currents are extremely closely matched and immune to ageing, temperature and process variations or matching. CC-DACs use symmetrical offset decoding in which the bit switching is arranged so that the zero-crossing transition is performed by switching only the smallest currents. The intrinsic highly accurate coarse current, combined with the symmetrical offset principle, precludes any distortion at the zero-crossing or at any other small-signal transitions. CC-DACs are therefore capable of high-quality reproduction of low-level audio input signals. Philips' CC-DACs are fabricated in a 1.0 m CMOS process and feature extremely low power dissipation, small packages and simple application. out out I ref I ref S2 S1 I ref S2 S1 M1 Cgs V gs M1 Cgs V gs MBA854 (a) (b) Principle of continuous calibration (a) calibration (b) operation. Digital Audio 2-3 2 DIGITAL AUDIO DATA CONVERTERS INTRODUCTION Main application areas of digital audio converters Type 2 Description SAA7360GP high-performance bitstream ADC SAA7366T economy bitstream ADC SAA7367T economy bitstream ADC TDA1305T(AT) bitstream/CC filter-DAC TDA1306T CC filter-DAC TDA1307 high-performance bitstream digital filter TDA1309H low-voltage bitstream/CC ADC + DAC TDA1310A(AT) continuous calibration DAC with current output TDA1311A(AT) continuous calibration DAC with voltage output TDA1312A(AT) continuous calibration DAC with voltage output TDA1313(T) continuous calibration DAC with voltage output TDA1314T quad sign-magnitude filter-DAC with voltage output TDA1386T CC filter-DAC TDA1387T continuous calibration DAC with current output TDA1388T bitstream/CC filter DAC TDA1541A high-performance 16-bit DAC TDA1541A/R1 high-performance 16-bit DAC TDA1541A/S1 single crown 16-bit DAC TDA1541A/S2 double crown 16-bit DAC TDA1543(T) economy 16-bit DAC TDA1545A(AT) continuous calibration DAC with current output TDA1547 top-grade BiMOS bitstream DAC TDA1548T low-voltage bitstream/CC filter-DAC with DSP features TDA1549(T) bitstream/CC DAC UDA1309H low-power stereo bitstream DAC UDA1320TZ low-voltage bitsream filter DAC UDA1321 USB DAC UDA1322TS low-voltage bitstream DAC with DSP features UDA1324TS ultra low-voltage bitstream filter DAC UDA1325 USB ADC/DAC UDA1340M low-voltage stereo filter ADC/DAC with DSP UDA1341TS low-voltage stereo filter ADC/DAC with DSP 2-4 Home hi-fi Portable hi-fi Car Multimedia Digital Audio Type Description Oversampling Data format (x fs) Typ. THD + N Typ. THD + N at 0 dB at -60 dB 4) dB(%) 4) Typ. output voltage (or current) 6) V (mA) Supply voltage Power dissipation Package (V) (mW) SAA7360GP high-performance bitstream ADC 128 data output format: I2S + two pseudo I2S -90(0.003) 102 5 10% 410 QFP44 SAA7366T economy bitstream ADC 128 data output format: I2S + one pseudo I2S -88(0.004) 95 5 10% 350 SO24 SAA7367T economy bitstream ADC 128 data output format: I2S + one pseudo I2S -88(0.004) 95 5 10% 150 SO24 96 I2S, "S", 1fs, up to 20-bit -90(0.003) -46(0.5) 108 1.5 3.4 to 5.5 70 SO28 4 I2S, "S", 1fs, up to 20-bit -70(0.032) -42(0.8) 108 1.1 5 10% 50 SO24 I2S, "S", 16-, 18-bit output -85(0.005) -35(1.7) 95 256 I2S, "S", 16-, 18-bit input -90(0.003) -44(0.6) 104 0.5 TDA1305T(AT)2)6) bitstream/CC filter-DAC TDA1306T 2)6) CC filter-DAC TDA1309H low-voltage bitstream/CC ADC + DAC ADC DAC dB(%) Typ. SNR (dB) 72 2.7 to 4.0 QFP44 84 continuous calibration DAC with current output 1 "S", up to 4fs -65(0.05) -33(2.2) 95 (1.0) 3 to 5.5 6 DIL8, SO8 TDA1311A(AT)5) continuous calibration DAC with voltage output 1 "S", up to 4fs -68(0.04) -33(2) 92 2.0 4 to 5.5 17 DIL8, SO8 TDA1312A(AT)5) continuous calibration DAC with voltage output 1 "S", up to 8fs -68(0.04) -33(2) 92 2.0 4 to 5.5 17 DIL8, SO8 TDA1313(T)5) continuous calibration DAC with voltage output 1 "S", up to 8fs -88(0.004) -38(1.3) 98 4.2 3 to 5.5 15 DIL16, SO16 TDA1314T5) quad sign-magnitude filterDAC with voltage output 4 2 x I2S, 1fs, 18-bit with sign -70(0.03) -42(0.8) 110 2.0 5 5% 85 SO28 TDA1386T2) CC filter-DAC 4 I2S, "S", 1fs, up to 20-bit -70(0.032) -42(0.8) 108 1.1 5 10% 50 SO24 TDA1387T continuous calibration DAC with current output 1 I2S, up to 4fs -88(0.004) -35(1.7) 98 (1.0) 3 to 5.5 28 SO8 TDA1388 bitstream/CC filter-DAC for CD-ROM 96 I2S, "S", 1fs, up to 20-bit -85(0.005) -35(1.7) 100 0.8 2.7 to 3.6 24 SSOP16 high-performance 16-bit DAC 1 I2S, up to 8fs -95(0.0018) -42(0.79) 112 (4.0) 5 10% 700 DIL28 high-performance 16-bit DAC 1 I2S, up to 8fs -95(0.0018) -43(0.7) 112 (4.0) 5 10% 700 DIL28 TDA1541A/S13) single crown 16-bit DAC 1 I2S, up to 8fs -95(0.001) -47(0.4) 112 (4.0) 5 10% 700 DIL28 TDA1541A/S23) double crown 16-bit DAC 1 I2S, up to 8fs -97(0.002) -47(0.4) 112 (4.0) 5 10% 700 DIL28 TDA1541A3) TDA1541A/R1 3) 2 TDA1543(T) economy 16-bit DAC 1 I S, up to 4fs -75(0.018) -33(2.2) 96 (2.30) 3 to 8 250 DIL8, SO16 TDA1545A(AT) continuous calibration DAC with current output 1 "S", up to 4fs -88(0.004) -35(1.7) 101 (1.0) 3 to 5.5 6 DIL8, SO8 continued on page 2-6 2-5 SURVEY OF CONVERTERS TDA1310A(AT) DIGITAL AUDIO DATA CONVERTERS Digital Audio Survey of stereo audio converters in type number sequence 2 2 Type Description Oversampling Data format (x fs) Typ. THD + N Typ. THD + N at 0 dB at -60 dB 4) Typ. SNR 4) dB(%) dB(%) (dB) Typ. output voltage (or current) 6) V (mA) Supply voltage Power dissipation (V) (mW) Package TDA1547 top-grade BiMOS bitstream DAC 24 1-bit, 192fs -101(0.0009) -51(0.02) 113 1.0 5 10% 800 DIL32 TDA1548T2) low-voltage bitstream/CC filter-DAC + DSP features 96 I2S, "S", 1fs, up to 20-bit -85(0.005) -35(1.8) 95 0.7 2.7 to 4 50 SO28 bitstream/CC DAC 24 1.5 3.8 to 5.5 50 SO16 1) TDA1549T 5) UDA1309H low-voltage bitstream/CC ADC + DAC "S", 4fs, 18-bit -90(0.003) -50(0.32) 110 I2S, "S", 16-, 18-bit output -85(0.005) -35(1.7) 95 256 I2S, "S", 16-, 18-bit input -90(0.003) -44(0.6) 104 1.0 ADC DAC 140 4.5 to 5.5 QFP44 120 UDA1320TZ low-voltage bitstream filter DAC 128 I2S, "S", up to 20-bit -85(0.005) -35(1.7) 100 0.8 2.7 to 3.6 24 SSOP16 UDA1321 low-voltage stereo filter DAC with DSP 128 I2S, "S", up to 20-bit + USB -85(0.005) -30(3.0) 95 0.8 3.0 to 3.6 150 SO28, SDIL32 UDA1322TS low-voltage bitstream DAC with DSP features 128 I2S, "S", up to 20-bit -90 -35 100 0.8 2.7 to 3.6 24 SSOP16 UDA1324TS ultra low-voltage bitstream DAC 128 I2S, "S", up to 20-bit -80 -30 90 t.b.d. 1.8 to 3.6 t.b.d. SSOP16 UDA1325 USB CODEC I2S, "S", up to 20-bit, USB output -80(0.01) -30(3.2) 95 t.b.d. I2S, "S", up to 20-bit, USB input -85(0.0056) -30(3.2) 95 t.b.d. SDIL42, QFP44 I2S, "S", 16-, 18-bit output 27 SSOP28 ADC DAC UDA1340M UDA1341TS low-voltage bitstream/CC ADC/DAC with DSP low-voltage bitstream/CC ADC + DAC with DSP 128 ADC DAC 128 -35(1.7) 95 -90(0.003) -35(1.7) 100 2 -90(0.003) -40(0.001) 100 I S, "S", up to 20-bit input I S, "S", 16-, 18-bit output ADC DAC -85(0.005) 2 128 2 I S, "S", up to 20-bit input 5.0 to 3.6 0.66 2.7 to 3.6 0.8 33 45 2.7 to 3.6 -95(0.002) -40(0.001) 0.8 SSOP28 33 Digital Audio SURVEY OF CONVERTERS NOTES: 1. measured with SAA7350 and 20-bit input; 2. includes digital filter; 3. high sound quality: dynamic element matching (DEM); 4. A-weighting; 5. includes I/V converter; 6. full-scale rms value. 102 DIGITAL AUDIO DATA CONVERTERS 2-6 Survey of stereo audio converters in type number sequence (continued) Type Description Oversampling Data format (x fs) Typ. THD + N Typ. THD + N at 0 dB at -60 dB dB(%) dB(%) Typ. SNR 4) (dB) 4) Typ. output voltage (or current) 6) V (mA) Supply voltage Power dissipation (V) (mW) Package Bitstream DAC 24 1-bit, 192fs -101(0.0009) -51(0.02) 113 1.0 5 10% 800 DIL32S bitstream/CC DAC 24 "S", 4fs, 18-bit -90(0.003) -50(0.32) 110 1.5 3.4 to 5.5 35 SO16 TDA1541A/S23) double crown 16-bit DAC 1 I2S, up to 8fs -95(0.002) -47(0.4) 112 (4.0) 5 10% 700 DIL28 TDA1541A/S13) single crown 16-bit DAC 1 I2S, up to 8fs -95(0.001) -47(0.4) 112 (4.0) 5 10% 700 DIL28 TDA1541A3) high-performance 16-bit DAC 1 I2S, up to 8fs -95(0.0018) -42(0.79) 112 (4.0) 5 10% 700 DIL28 TDA1541A/R13) high-performance 16-bit DAC 1 I2S, up to 8fs -95(0.001) -43(0.79) 112 (4.0) 5 10% 700 DIL28 TDA1543(T) economy 16-bit DAC 1 I2S, up to 4fs -75(0.018) -33(2.2) 96 (2.3) 3 to 8 250 DIL8, SO16 TDA15471) top-grade BiMOS bitstream DAC Bitstream/continuous calibration DACs TDA1549T 5) 16-bit DACs Continuous calibration DACs TDA1313(T)5) continuous calibration DAC with voltage output 1 "S", up to 8fs -88(0.004) -38(1.3) 98 4.2 3 to 5.5 30 DIL16, SO16 TDA1545A(AT) continuous calibration DAC with current output 1 "S", up to 4fs -88(0.004) -35(1.7) 101 (1.0) 3 to 5.5 6 DIL8, SO8 TDA1387T continuous calibration DAC with current output 1 I2S, up to 4fs -88(0.004) -35(1.7) 98 (1.0) 3 to 5.5 28 DIL8, SO8 TDA1312A(AT)5) continuous calibration DAC with voltage output 1 "S", up to 8fs -68(0.04) -33(2) 92 2.0 4 to 5.5 8 DIL8, SO8 TDA1311A(AT)5) continuous calibration DAC with voltage output 1 "S", up to 4fs -68(0.04) -33(2.2) 92 2.0 4 to 5.5 8 DIL8, SO8 TDA1310A(AT) 1 "S", up to 4fs -65(0.05) -33(2.2) 95 (1.0) 3 to 5.5 6 DIL8, SO8 continuous calibration DAC with current output 2-7 SURVEY OF CONVERTERS NOTES: 1. measured with SAA7350 and 20-bit input; 2. includes digital filter; 3. high sound quality: dynamic element matching (DEM); 4. A-weighting; 5. includes I/V converter. DIGITAL AUDIO DATA CONVERTERS Digital Audio Survey of stereo audio DACs (ranked by typical THD + N at 0 dB performance per category) 2 2 Type Description Oversampling Data format (x fs) Typ. THD + N Typ. THD + N Typ.SNR at 0 dB at -60 dB dB(%) dB(%) 4) (dB) 4) Typ. output voltage (or current) 6) V (mA) Supply voltage Power dissipation (V) (mW) Package Bitstream/continuous calibration filter-DACs TDA1305T(AT)2)6) bitstream/CC filter-DAC 96 I2S, "S", 1fs, up to 20-bit -90(0.003) -46(0.5) 108 1.5 3.4 to 5.5 70 SO28 TDA1388 bitstream/CC filter-DAC for CD-ROM 96 I2S, "S", 1fs, up to 20-bit -85(0.005) -35(1.7) 95 1.0 4.5 to 5.5 110 SSOP28 TDA1548T2) low-voltage bitstream/CC filterDAC + DSP features 96 I2S, "S", 1fs, up to 20-bit -85(0.005) -35(1.8) 95 0.7 2.7 to 4 50 SO28 CC filter-DAC 4 I2S, "S", 1fs, up to 20-bit -70(0.032) -42(0.8) 108 1.1 5 10% 85 SO24 CC filter-DAC 4 I2S, "S", 1fs, up to 20-bit -70(0.032) -42(0.8) 108 2.0 5 10% 50 SO24 4 2 x I2S, 1fs, 18-bit with sign -70(0.03) -42(0.8) 110 2.0 5 5% 85 SO28 Continuous calibration filter-DACs TDA1306T2)6) TDA1386T 2) Quadruple sign-magnitude filter-DAC TDA1314T5) quad sign-magnitude filter-DAC with voltage output Bitstream filter-DACs UDA1322TS low-voltage bitstream DAC with DSP features 128 I2S, "S", up to 20-bit -90 -35 100 0.8 2.7 to 3.6 24 SSOP16 UDA1320TZ low-voltage low-cost stereo filter DAC with DSP 128 I2S, "S", up to 20-bit -85(0.005) -35(1.7) 100 0.8 2.7 to 3.6 24 SSOP16 UDA1321 USB DAC 128 I2S, "S", up to 20-bit + USB -85(0.005) -30(3) 95 0.8 3.0 to 3.6 150 I2S, "S", up to 20-bit -80 UDA1324TS ultra low-voltage bitstream DAC 128 DIGITAL AUDIO DATA CONVERTERS 2-8 Survey of stereo audio filter-DACs (ranked by typical THD + N at 0 dB performance per category) SO28, SDIP32 -30 90 t.b.d. 1.8 to 3.6 t.b.d. SSOP16 NOTES: 1. measured with SAA7350 and 20-bit input; 2. includes digital filter; 3. high sound quality: dynamic element matching (DEM); 4. A-weighting; 5. includes I/V converter. SURVEY OF CONVERTERS Digital Audio Type Description Over-sampling Data format Typ. THD + N at 0 dB dB(%) (x fs) Typ. THD + N at -60 dB dB(%) 4) Typ. SNR (dB) 4) Supply voltage (V) Power dissipation (mW) SAA7366T economy bitstream ADC 128 I S + one pseudo I S -88(0.004) 95 5 10% 350 SAA7367T economy bitstream ADC 128 I2S + one pseudo I2S -88(0.004) 95 5 10% 150 SAA7360GP high-performance bitstream ADC 128 I2S + two pseudo I2S -90(0.003) 102 5 10% 410 2 2 NOTES: 1. measured with SAA7350 and 20-bit input; 2. includes digital filter; 3. high sound quality: dynamic element matching (DEM); 4. A-weighting; 5. includes I/V converter. Survey of stereo audio ADCs + DACs Type Description Oversampling Data format UDA1309H UDA1325 low-voltage bitstream/CC ADC/DAC ADC low-voltage bitstream/CC ADC/DAC ADC USB CODEC ADC DAC DAC DAC UDA1340M (dB) -85(0.005) -35(1.7) 95 I2S, "S", 16-, 18-bit input -90(0.003) -44(0.6) 104 I2S, "S", 16-, 18-bit output low-voltage low-cost stereo ADC filter ADC/DAC with DSP DAC 256 -85(0.005) -35(1.7) 95 I2S, "S", 16-, 18-bit input -90(0.003) -44(0.6) 104 I2S, "S", up to 20-bit, USB output 128 -80(0.01) -30(3.2) 95 I2S, "S", up to 20-bit, USB input -85(0.0056) -30(3.3) 95 I2S, "S", up to 20-bit output 128 -85(0.005) -35(1.7) 95 I2S, "S", up to 20-bit input -95(0.002) -35(1.7) 100 I2S, "S", up to 20-bit output 128 -90(0.003) -40(0.001) 100 I2S, "S", up to 20-bit input -95(0.002) -40(0.001) 102 dB(%) 2 I S, "S", 16-, 18-bit output dB(%) 4) Typ. output voltage (or current) 6) V (mA) 0.5 1.0 0.66 0.8 0.8 Supply voltage Power dissipation (V) (mW) 2.7 to 4.0 4.5 to 5.5 3 to 3.6 2.7 to 3.6 2.7 to 3.6 72 84 140 120 t.b.d t.b.d 27 33 45 33 Package QFP44 QFP44 SDIL42, QFP44 SSOP28 SSOP28 2-9 SURVEY OF CONVERTERS UDA1341TS low-voltage low-cost stereo ADC filter ADC/DAC with DSP DAC 256 Typ.SNR 4) (x fs) TDA1309H Typ. THD + N Typ. THD + N at 0 dB at -60 dB DIGITAL AUDIO DATA CONVERTERS Digital Audio Survey of stereo audio ADCs (ranked by typical THD + N at 0 dB performance per category) 2 DIGITAL AUDIO DATA CONVERTERS DACs UDA1320TZ/22TS/24TS Bitstream filter DACs 2 UDA1320TZ UDA1324TS All features of the UDA1320, plus: Control via L3 microcontroller interface Operates from a supply voltage as low as 1.8 V Supports word lengths up to 20 bits (I2S, MSB) and 16-, 18- and 20-bit (LSB) Digital logarithmic volume control Digital de-emphasis for 32 kHz, 44.1 kHz and 48 kHz fs Stereo line output under L3 volume control Low power, low voltage stereo DAC with integrated digital filter 5 V tolerant inputs Control via static pins to provide enhanced functionality Selectable system clock frequencies (256 fs and 512 fs) Multiple format input interface compatible with I2S-bus and LSB-justified Supports word lengths up to 20 bits (I2S) and 16-, 18- and 20-bit (LSB) Digital de-emphasis for 44.1 kHz Soft mute High linearity, wide dynamic range, low distortion These single-chip stereo bitstream DACs operate from a low power supply and offer low power consumption, making them ideal for portable digital audio applications incorporating playback functions. The UDA1322TS offers full DSP features while the UDA1324TS is especially suited to operate at ultra-low supply voltages. No analog post-filtering required Slave mode only applications UDA1322TS All features of the UDA1320, plus: Built-in DSP functions Control via L3 microcontroller interface Digital logarithmic volume and tone control Supports word lengths up to 20 bits (I2S, MSB) and 16-, 18- and 20-bit (LSB) Selectable system clock frequencies (256 fs, 384 fs and 512 fs) Digital de-emphasis for 32 kHz, 44.1 kHz and 48 kHz fs Stereo line output under microcontroller volume control Both the UDA1322TS and the UDA1324TS are fully pin compatible with the UDA1320TZ. QUICK REFERENCE DATA UDA1320TZ UDA1322TS UDA1324TS Supply voltage 2.4 to 3.6 V 2.7 to 3.6 V 1.8 to 3.6 V Digital supply current 3 mA 3 mA 3 mA DAC supply current 5 mA 6 mA 4 mA Typical THD + N at 0 dB -85 dB -90 dB -80 dB Typical THD + N at -60 dB -35 dB -35 dB -30 dB SNR 100 dB 100 dB 90 dB Package SSOP16 SSOP16 SSOP16 2-10 Digital Audio DIGITAL AUDIO DATA CONVERTERS BCK WS DATAI DACs DIGITAL INTERFACE CONTROL INTERFACE APSEL APPL0 APPL1 APPL2 APPL3 2 VOLUME/MUTE/DE-EMPHASIS UDA1320 UDA1324 SYSCLK INTERPOLATION FILTER NOISE SHAPER DAC VOUTL DAC VOUTR MSC425 VREFD VDDD VSSD L3CLK BCK WS DATAI DIGITAL INTERFACE CONTROL INTERFACE L3DATA L3MODE VOLUME/MUTE/DE-EMPHASIS TEST1 UDA1322TS TEST2 INTERPOLATION FILTER SYSCLK NOISE SHAPER DAC VOUTL DAC VOUTR MSC546 VDDA Digital Audio VSSA VREFD 2-11 DIGITAL AUDIO DATA CONVERTERS DACs UDA1321 Bitstream filter DAC 2 Complete stereo USB-DAC system with integrated filtering and line output drivers Supports all USB-compliant audio multimedia devices On-board DSP complies with USB and HID audio device class specification and provides extensive sound processing Supports 12 Mbits/s `full speed' serial data transmission Fully automatic `Hot Plug-and-Play' operation Supports multiple audio data I/O formats Asynchronous and isochronous support High SNR with low total harmonic distortion High linearity and wide dynamic range Digital PLL-based asynchronous Master clock Low power consumption and Power down mode under USB `suspend' control On-chip timing reference recovery system including oscillator circuitry, using an external crystal for clock regeneration digital volume control for left and right channels via USB or direct control; digital bass and treble tone control; and separate soft mute for left and right channels. Additional features can be included with the use of an external DSP IC, connected via the I2S-bus. QUICK REFERENCE DATA Supply voltage 3.3 V I2C-bus controlled Yes Digital supply current 85 mA Audio input sample frequency range 5 - 55 kHz (continuous) Typical THD + N at 0 dB -85 dB Typical THD + N at -60 dB -30 dB SNR 95 dB Total power dissipation (typ.) 150 mW Package UDA1321 SDIL32 UDA1321T D+ TC RTCB SO28 D- ANALOG FRONTEND TCB SHTCB The UDA1321 is a stereo CMOS DAC and USB interface specifically designed for USB compliant audio devices and multimedia audio applications such as USB-equipped monitors and telephony devices, and digital audio speakers. It incorporates an analog front-end, USB processor, embedded microcontroller and an Asynchronous DAC (ADAC). The USB processor forms the interface between the USB, ADAC and microcontroller and consists of a Serial Interface Engine (SIE), a Memory Management Unit (MMU) and an Audio Sample Redistribution module. USB-PROCESSOR GP4/BCK GP3/WS I2S I/O GP2/DO GP1/DI GP0 MICROCONTROLLER I 2S GP5 GP6/SCL GP7/SDA FIFO fs_in The ADAC includes a Sample Frequency Generator which reconstructs the sample clock, digital upsampling filters, a noise shaper, a Filter Stream DAC (FSDAC) and a unique sound processing DSP to handle feature processing. Audio information can be applied to the ADAC via the USB interface, or directly as I2S input data or LSB-justified data with word lengths of 16-, 18- or 20-bits. Two upsample filters along with a variable sample-andhold function increase the oversampling rate from 1 fs to 128 fs, after which a third order noise shaper converts oversampled data to a bitstream for the FSDAC. Finally, on-board amplifiers convert the FSDAC output current to a voltage output signal for driving a line output. Sound processing features are in line with the USB audio device class specification and include digital de-emphasis; separate 2-12 SAMPLE FREQUENCY GENERATOR AUDIO FEATURE PROCESSING DSP fs_in UPSAMPLE FILTERS 64fs_in VARIABLE HOLD REGISTER VSSX XTAL1 XTAL2 OSC UDA1321 128fs TIMING VDDX 3th ORDER NOISE SHAPER RconvL RconvR LEFT DAC RIGHT DAC VOUTL VOUTR REFERENCE VOLTAGES MSC424 Digital Audio DIGITAL AUDIO DATA CONVERTERS DACs TDA1305T(AT) Bitstream/CC filter DAC increases the oversampling rate in normal speed mode to x96 (fsys = 384fs) or x128 (fsys = 256fs) or to x48 (fsys = 256fs) or x64 (fsys = 384fs) . A 2nd-order noise shaper converts this oversampled data into a bitstream. Cascaded 4-stage digital filter incorporating 2-stage FIR (Finite Impulse Response) filter, linear interpolation and sample and hold circuit -12 dB fixed attenuation on volume control Soft mute and noise shaping The DAC also incorporate special data encoding. This ensures an extremely high signal-to-noise ratio, superior dynamic range, and immunity to process variations and component ageing. No zero crossing distortion Digital de-emphasis filter for 32, 44.1 and 48 kHz sampling rates I2S or `S' 1fs serial input formats at 16-, 18- or 20-bits 128 times oversampling at 256 x fs; 96 times at 384 x fs QUICK REFERENCE DATA Supply voltage Digital de-emphasis filter for The TDA1305T(AT) are BCC (Bitstream/ContinuousCalibration) filter-DACs which use Philips' Bitstream conversion technique for optimum audio performance at low signal levels, and the power-saving CC technique on larger signals. 3 sampling rates The DACs accept input in I2S format or Japanese format with word lengths of 16, 18 and 20 bits. Four cascaded filters increase the oversampling rate to x16. A sample-and-hold function ATSB CKSL1,2 DATA WS DSMB -90 dB Typical THD at -60 dB -46 dB Typical SNR 110 dB RMS full scale output 1.5 V Package SO28 MUSB CKSL1 L TIMING 16 f s VDDA 6 x OVERSAMPLING (SAMPLE & HOLD) TEST2 L TDA1305T(AT) X OUT CDEC R TEST1 CKSL2 X IN FIR FILTER (TDA1305) IIR FILTER (TDA1306) BCK 32, 44.1, 48 kH Typical THD at 0 dB DEEM2 DEEM1 SERIAL DATA INPUT 3.4 to 5.5 V R V SSA 96 f s 2nd - ORDER NOISE SHAPING ENCODING AND OUTPUT SWITCHING VDDD V SSD FILTER FILTER V OL 16 (4 - BIT) CURRENT SOURCES 16 (4 - BIT) CURRENT SOURCES 16 (4 - BIT) CURRENT SINKS 16 (4 - BIT) CURRENT SINKS V OR Vref REFERENCE SOURCE MEA755 - 1 V SSD Digital Audio VDDD V DDA V SSA 2-13 2 DIGITAL AUDIO DATA CONVERTERS DACs TDA1388T/M Bitstream/CC filter DAC CD-ROM sound path features include separate L & R soft mute, bilingual and monaural modes, channel interchange or combinations DSP functions cover independent L & R volume control, bass and treble boost, and de-emphasis I2S and LSB input formats QUICK REFERENCE DATA Supply voltage IF1 IF2 5V Supply current 22 mA SNR Stereo line out with microprocessor-controlled volume Stereo headphone output with potentiometer volume control High linearity, wide dynamic range and low distortion 95 dBA Dynamic range 95 dB THD + N -85 dB line out -65 dB headphone output Total power dissipation Package DATA WS 110 mW TDA1388T(M) BCK SO28 (SSOP28) ACP SERIAL DATA INPUT CHANNEL INTERCHANGE SYSCLK TIMING SYSSEL APPL2 DE-EMPHASIS VOLUME CONTROL FEATURE CONTROL UNIT BASS BOOST AND TREBLE APPL1 SOFT MUTE FILTER STAGE 1 + 2 APPL0 4fs SAMPLE-AND-HOLD 16 x OVERSAMPLING TDA1388 FILTCL RCONV1 - VOL VDDA 2nd-ORDER NOISE SHAPER 64fs 2nd-ORDER NOISE SHAPER DATA ENCODER DATA ENCODER 16 (4-BIT) CALIBRATED CURRENT SOURCES 16 (4-BIT) CALIBRATED CURRENT SOURCES LEFT OUTPUT SWITCHES RIGHT OUTPUT SWITCHES + 2 The single-chip TDA1388 highly-integrated Bitstream/CC filter-DAC offers many sound processing functions, providing a complete sound reproduction solution in CD-ROM applications. It requires no analog postfilter and can be controlled by static pins or by microcontroller interface. Single-chip audio processor On-chip filtering, DACs, postfiltering and buffering 16 (4-BIT) CALIBRATED CURRENT SINKS REFERENCE SOURCE FILTCR RCONV2 - VOR + 16 (4-BIT) CALIBRATED CURRENT SINKS Vref + HPINL + REFERENCE SOURCE - - 30 k HPINR 30 k 30 k 30 k MSC210 HPOUTL 2-14 HPOUTR Digital Audio DIGITAL AUDIO DATA CONVERTERS DACs TDA1548T Bitstream/CC filter DAC Single-chip audio processor Incorporates DACs, digital de-emphasis filters, volume and tone control, and a headphone amplifier Accepts up to 20-bit serial input in I2S or LSB-justified format Up to 128 times oversampling Cascaded 4-stage digital filter incorporates 2-stage FIR filter and linear interpolator Noise-shaping filter delivers excellent THD and noise figures Two separate dynamic ranges for the bass boost filter Soft mute No zero crossing distortion Master and slave operation family of Bitstream/CC DACs also provides a complete sound channel processing solution for multimedia PC applications and dual-purpose CD-ROM drives. A selectable flat frequency response allows the headphone outputs to be used as line outputs for driving speakers and its design means no bulky DC blocking capacitors are needed in CD-ROM headphone driver applications. With its low operating voltage and small package, it is particularly suited to portable battery powered equipment, including notebook PCs. QUICK REFERENCE DATA IF2 DATA 3V Supply current 16 mA SNR 95 dB Selectable system clock 64, 256 and 384 fs THD + N at 0 dB -85 dB THD + N at -60 dB -35 dB Digital de-emphasis filter Designed as a single-chip solution for all sound functions in CD, MD and DCC personal stereo players, the TDA1548T IF1 Supply voltage WS 44.1 kHz Total power dissipation (max.) 50 mW Package SSOP28 BCK MUTE SERIAL DATA INPUT DEEM VOLUME AND SOUND CONTROL VOLUME CONTROL SYSCLK SOFT MUTE CONTROL TIMING AD3S ADVC ADBB CLSEL ADTR SOUND CONTROL 1 FS FILTER STAGE 1 V DDA 2 FS MODE0 OP FILTER STAGE 2 MODE1 ADREF 4 FS LINEAR INTERPOLATOR 8 FS 8 x OVERSAMPLING (SAMPLE-AND-HOLD) IOL RCONV1 1 nF 2nd ORDER NOISE SHAPER 2nd ORDER NOISE SHAPER DATA ENCODER DATA ENCODER 16 (4-bit) CALIBRATED CURRENT SOURCES 16 (4-bit) CALIBRATED CURRENT SOURCES LEFT OUTPUT SWITCHES RIGHT OUTPUT SWITCHES 2.2 k C EXT1 VOL OP1 VDDO V REF GND 8 x OVERSAMPLING (SAMPLE-AND-HOLD) IOR R CONV2 1 nF C EXT2 2.2 k VOR OP1 REFERENCE SOURCE 16 (4-bit) CALIBRATED CURRENT SINKS 16 (4-bit) CALIBRATED CURRENT SINKS 1 F OP3 GND TDA1548T GND V COM Digital Audio MSB470 - 1 2-15 2 DIGITAL AUDIO DATA CONVERTERS DACs TDA1549T Bitstream continuous calibration DAC 2 Simple application Continuous calibration DAC combined with the bitstream technique Cascaded 3-stage digital filter incorporating 7th-order half-band FIR filter stage, linear interpolator and sample and hold Noise shaper No zero crossing distortion The TDA1549T (BCC-DAC1) featuring a unique combination of bitstream and continuous calibration. This combination, together with a high degree of analog and digital integration, results in a digital-to-analog conversion system with true 18-bit dynamic range, high linearity and simple low-cost application. QUICK REFERENCE GUIDE Supply voltage Furthermore, the internal reference circuitry in the IC ensures that the output voltage is proportional to the supply voltage, thereby making optimum use of the supply voltage over a wide range (3.8 to 5.5 V). 3.8 to 5.5 V Typ. THD + N at 0 dB -90 dB Typ. THD + N at -60 dB -50 dB Typical SNR 110 dB Serial input format DATA WS BCK CONTROL AND TIMING "S" 4fs, 18-bit RMS full-scale output voltage 1.5 V Package SO16 FIR FILTER L TEST R 16 f s 6 x OVERSAMPLING (SAMPLE & HOLD) L R VDDD 96 f s 2nd - ORDER NOISE SHAPING ENCODING AND OUTPUT SWITCHING TDA1549(T) V SSD FILTER FILTER V OL 16 (4 - BIT) CURRENT SOURCES 16 (4 - BIT) CURRENT SOURCES 16 (4 - BIT) CURRENT SINKS 16 (4 - BIT) CURRENT SINKS V OR Vref REFERENCE SOURCE MEA754 V SSD 2-16 VDDD V DDA V SSA Digital Audio DIGITAL AUDIO DATA CONVERTERS DACs TDA1306T/TDA1386T CKSL1 CKSL2 Continuous Calibration filter DACs DATA WS Simple application Noise shaping filter Cascaded 4-stage digital filter incorporating IIR filter stage -12 dB fixed attenuation on volume control BCK SERIAL DATA INPUT TIMING 4 x f s DIGITAL UP - SAMPLE TEST1 TEST2 NOISE SHAPER NOISE SHAPER RIGHT OUTPUT SWITCHES RIGHT OUTPUT SWITCHES MODE CONTROL VSSD FILTCR RCONV1 RCONV2 3 k VOL APPL APP0 APP1 APP2 APP3 VDDD FILTCR Soft mute and noise shaping Variable volume control via microcontroller interface No zero crossing distortion SYSCLK FILTER AND FEATURES OP1 CC DIVIDER TDA1306T TDA1386T 3 k CC DIVIDER OP1 VOR VREF Digital de-emphasis filter at 44.1 kHz sampling rate I2S or `S' 1fs serial input formats at 16-, 18- or 20-bits REFERENCE SOURCE VSSA MSB204 - 1 VSSO VDDO V DDA VSSA 4 times oversampling Selectable system clock 256 fs or 384 fs (TDA1306T only) TDA1305T pin compatible (TDA1306T only) The TDA1306T/86T dual CC-DACs are a low-cost alternative to the TDA1305T. With their up-sampling filter and noise shaping, they require only simple 1st-order analog postfiltering. Two on-board operational amplifiers convert the digital-to-analog current to an output voltage. QUICK REFERENCE DATA TDA1306T TDA1386T Supply voltage 5V 5V Typical THD at 0 dB -70 dB -70 dB Typical THD at -60 dB (A-weighting) -42 dB -42 dB Typical SNR 110 dB 108 dB Selectable system clock 256, 384 x fs 256 x fs RMS full scale output 1.1 V 1.1 V Package SO24 SO24 Digital Audio 2-17 2 DIGITAL AUDIO DATA CONVERTERS DACs TDA1310A(T)/TDA1387T/TDA1545A(AT) Continuous Calibration DACs with current output 2 Low power consumption Space saving SO8 package Wide operating temperature range (-40 C to +85 C) Single 3 V to 5.5 V supply Internal bias current ensures wide dynamic range (16-bit resolution) Output current and bias current are proportional to the supply voltage Short settling time permits 2fs, 4fs or 8fs oversampling (serial input) or double-speed operation at 4fs oversampling No zero-crossing distortion In these three DACs, 32 current sources and one spare current source are continuously calibrated. The 32 current sources define the 5 MSBs. The spare current source is included to allow continuous converter operation. The output from one of the calibrated current sources is connected to an 11-bit binary current divider containing 2048 transistors which defines the 11 LSBs. These DACs accept 16-bit serial data input words with left and right channel words time-division multiplexed. The MSB (bit 1) must always be first. With the Word Select (WS) input HIGH, input data are placed in the left input register; with it LOW, input data are placed in the right input register. The data in the input registers are simultaneously latched to the associated output registers which control the bit switches. QUICK REFERENCE DATA TDA1310A/AT TDA1387T TDA1545A(AT) Supply voltage 3 to 5.5 V 3 to 5.5 V 3 to 5.5 V Supply current 3.0 mA 5.5 mA 3.0 mA Input format `S', up to 4 x fs I2S up to 4 x fs `S', up to 4 x fs Full-scale output current 1.0 mA 1.0 mA 1.0 mA Typical THD + N at 0 dB -65 dB -88 dB -88 dB Typical SNR 95 dB 98 dB 101 dB 15 mW 27.5 mW 15 mW Typical power dissipation @5 V @3 V Package 2-18 6.0 mW 10 mW 6.0 mW SO8, DIL8 SO8 SO8, DIL8 Digital Audio DIGITAL AUDIO DATA CONVERTERS DACs V DD V OL LEFT INPUT REGISTER RIGHT INPUT REGISTER LEFT OUTPUT REGISTER RIGHT OUTPUT REGISTER IDR LEFT BIT SWITCHES 32 (3 - BIT) CALIBRATED CURRENT SOURCES 32 (3 - BIT) CALIBRATED CURRENT SOURCES 1 CALIBRATED SPARE SOURCE 1 CALIBRATED SPARE SOURCE 11 - BIT PASSIVE DIVIDER REFERENCE SOURCE WS V OR I BR 11 - BIT PASSIVE DIVIDER DATA OP2 RIGHT BIT SWITCHES I BL BCK 2 V ref OP1 CONTROL AND TIMING I ref R ref TDA1310A(AT) TDA1545A(AT) TDA1387T V DD MSC188 Digital Audio 2-19 DIGITAL AUDIO DATA CONVERTERS DACs TDA1311A(AT)/12A(AT)/13(T) Continuous Calibration DACs with voltage output 2 Internal bias current ensures wide dynamic range (16-bit resolution) Output current and bias current are proportional to the supply voltage Wide operating temperature range (-40 C to +85 C) Short settling time permits 2fs, 4fs or 8fs oversampling (serial input) or double-speed operation at 4fs oversampling No zero-crossing distortion These are derivatives of the CC-DAC with current output. They include integrated I/V converters at their analog outputs. This produces a voltage output, thereby allowing the number of peripheral components to be reduced to one small decoupling capacitor. The TDA1311A(AT) version of these DACs has a 4fs oversampling data input format which is compatible with most currently used non-I2S input formats (time-division multiplexed, two's complement, TTL). The TDA1312A(AT) can handle up to 8fs oversampled data input streams which are compatible with most dual input serial data, two's complement, TTL input formats. The final CC-DAC in this category, the TDA1313(T), is a lownoise version with selectable 4fs/8fs oversampled data input streams. QUICK REFERENCE DATA TDA1311A(AT) TDA1312A(AT) TDA1313(T) Supply voltage 4 to 5.5 V 4 to 5.5 V 3 to 5.5 V Supply current 3.4 mA 3.4 mA 8 mA Input format `S', up to 4fs `S', up to 8fs S", up to 4fs (simultaneous) Full-scale output voltage 2.0 V 2.0 V 4.2 V Typical THD + N at 0 dB -68 dB -68 dB -88 dB Typical THD + N at -60 dB -33 dB -33 dB -38 dB Typical SNR 92 dB 92 dB 98 dB Typical power dissipation at 5 V 8 mW 8 mW 30 mW Package SO8, DIL8 SO8, DIL8 SO16, DIL16 "S", up to 8fs (parallel) 2-20 Digital Audio DIGITAL AUDIO DATA CONVERTERS V OL I/V DACs LEFT INPUT REGISTER RIGHT INPUT REGISTER LEFT OUTPUT REGISTER RIGHT OUTPUT REGISTER LEFT BIT SWITCHES RIGHT BIT SWITCHES I OL I/V I OR 11 - BIT PASSIVE DIVIDER 32 (3 - BIT) CALIBRATED CURRENT SOURCES 32 (3 - BIT) CALIBRATED CURRENT SOURCES 1 CALIBRATED SPARE SOURCE 1 CALIBRATED SPARE SOURCE V OR 2 11 - BIT PASSIVE DIVIDER REFERENCE SOURCE BCK CONTROL AND TIMING WS DATA TDA1311A(AT) V DD MBA858 - 1 V OL I/V LEFT INPUT REGISTER RIGHT INPUT REGISTER LEFT OUTPUT REGISTER RIGHT OUTPUT REGISTER LEFT BIT SWITCHES RIGHT BIT SWITCHES I OL I/V I OR 11 - BIT PASSIVE DIVIDER 32 (3 - BIT) CALIBRATED CURRENT SOURCES 32 (3 - BIT) CALIBRATED CURRENT SOURCES 1 CALIBRATED SPARE SOURCE 1 CALIBRATED SPARE SOURCE V OR 11 - BIT PASSIVE DIVIDER REFERENCE SOURCE BCK CONTROL AND TIMING WS DATA R TDA1312A(AT) V DD DATA L MBA863 - 1 GND R in L in V OL LEFT INPUT REGISTER RIGHT INPUT REGISTER LEFT OUTPUT REGISTER RIGHT OUTPUT REGISTER LEFT BIT SWITCHES RIGHT BIT SWITCHES R out L out Vref 11 - BIT PASSIVE DIVIDER 4/8fs SEL 32 (5 - BIT) CALIBRATED CURRENT SOURCES 32 (5 - BIT) CALIBRATED CURRENT SOURCES 1 CALIBRATED SPARE SOURCE 1 CALIBRATED SPARE SOURCE 11 - BIT PASSIVE DIVIDER Vref Vref REFERENCE SOURCE BCK VOR LRSEL/RSI SI/LSI CONTROL AND TIMING TDA1313(T) WS MEA745 Digital Audio 2-21 DIGITAL AUDIO DATA CONVERTERS DACs TDA1314T Quadruple sign-magnitude filter DAC 2 Wide dynamic range (102 dB typical) allows digital (DSP) volume control Four times bit-serial oversampling filter First-order 4fs noise shaper Four (front + rear stereo) very-low-noise signmagnitude DACs for car digital audio applications Only 1st-order post filtering required Smooth power-on of the DAC output currents Automatic digital PLL divider range setting allows the master clock to be selected over a wide range Jitter on the I2S signals does not degrade the THD QUICK REFERENCE DATA This is a quadruple low-noise, wide dynamic range filter-DAC for use in car digital audio systems with front and rear stereo output. Each of the four channels comprises an 8th-order IIR filter with up-sampling from 1fs to 4fs followed by a 1st-order noise shaper and a sign-magnitude DAC. The output current is converted into a voltage by an individual operational amplifier for each of the four channels. Single supply voltage 4.75 to 5.25 V Typ. power dissipation 85 mW Resolution of the DACs (length of data input words) 18 bits Typ. THD + N at full-scale at 0 dB -70 dB Typ. THD + N at full-scale at -60 dB Typ. Digital silence (no signal, A-weighted) -42 dB Serial input format Output voltage range (5 k load, 3 k feedback) Typ. full-scale output current (Rref = 20.5 k) Operating temperature range Package -110 dBA 2 x I2S, 1fs, 18-bit with sign 1 VRMS 0.5 mA -40 to +85 C SO28 TDA1314T 4 fs UP-SAMPLE FILTER I2 S NOISE SHAPER DAC AS ABOVE AS ABOVE AS ABOVE MSB205 2-22 Digital Audio DIGITAL AUDIO DATA CONVERTERS DACs TDA1541A/R1/S1/S2 High-performance 16-bit DAC These monolithic integrated dual 16-bit digital-to-analogue converters are specifically designed for use in hi-fi digital audio equipment such as Compact Disc players, digital tape or cassette recorders. Dynamic Element Matching (DEM) 4fs or 8fs oversampling I2S input data format, up to 8fs TTL compatible inputs Marked with single crown (TDA1541A/S1 only) Marked with double crown (TDA1541A/S2 only) TDA1541A/S2 With this range of DACs, the ten lowest bits are derived from a reference current while the six highest bits are generated by time-averaging in the Dynamic Element Matching (DEM) parts. For a full description the DEM technique. TDA1541A/S1 TDA1541A TDA1541A/R1 Typ. THD + N at full-scale at 0 dB -97 dB -95 dB -95 dB -95 dB Typ. THD + N at -60 dB -47 dB -47 dB -42 dB -43 dB Channel separation 98 dB 98 dB 98 dB 98 dB Typ. signal-to-noise ratio 112 dB 112 dB 112 dB 112 dB Full-scale output current 4.0 mA 4.0 mA 4.0 mA 4.0 mA Package DIL28 DIL28 DIL28 DIL28 2.2 nF 1.8 k AOL RIGHT OUTPUT LATCH LEFT OUTPUT LATCH LE LE LEFT BIT SWICHES 1.8 k AOR RIGHT BIT SWITCHES 3 x 2 - BIT ACTIVE DIVIDER 3 x 2 - BIT ACTIVE DIVIDER REFERENCE SOURCE DATA/ DATA 470 pF OSCILLATOR BCK C osc VDD1 RIGHT INPUT LATCH CONTROL & TIMING TDA1541A(/R1) (/S1) (/S2) ADDRESS POINTER DATA R OB/TWC 100 nF (7x) SHIFT GEGISTER LEFT INPUT LATCH LE/WS V out right 10-BIT PASSIVE DIVIDER 10-BIT PASSIVE DIVIDER 100 nF (7x) V out right 2.2 nF 100 nF 100 nF VDD1 VDD LE analog ground digital ground 5V 15 V 5V 100 nF MSB203 Digital Audio 2-23 2 DIGITAL AUDIO DATA CONVERTERS DACs TDA1543(T) Economy/low-noise 16-bit DAC 2 range of 16 bits. An adjustable bias current, derived from the current through the VREF pin, is added to the output currents. VREF can also be used as a reference for op-amps at the analog outputs. Low distortion 16-bit dynamic range Single 5 V power supply 4x oversampling possible No peripheral components required Adjustable bias current added to the output currents Our economy, cost-efficient 16-bit DACs are characterized by their simple application. All that's needed is a single 5 V supply and one supply decoupling capacitor. Our low-noise 16-bit DAC is an improved version of our economy DACs with a higher signal to noise ratio and lower harmonic distortion with small signals (at -60 dB). Furthermore, it has a full-scale output current of 3 mA 10% compared with 2.3 mA 15% for the economy DACs. The serial data input is shifted-in at the TTL-compatible interface. Two address pointers correctly position each data bit in the left and right input registers, and the left and right 16-bit words are simultaneously latched to the associated output registers which each drive symmetrical bit switches. Passive current dividers generate the 16 bit currents switched by the symmetrical bit switches. A low-noise current source drives left and right 11-bit passive dividers, one current from each of which is fed into an associated 5-bit passive divider to achieve a dynamic QUICK REFERENCE DATA I2S, up to 4fs Input format Typ. THD + N at full-scale at 0 dB -75 dB Typ. THD + N at -60 dB -33 dB Typical SNR 98 dB Full-scale output current 2.30 mA Package DIL8, SO16 I BL AOL Vout left I AOL LEFT OUTPUT LATCH Vref RIGHT OUTPUT LATCH LE LE LEFT BIT SWITCHES I BR AOR RIGHT BIT SWITCHES Vout right I AOR Vref 5-BIT PASSIVE DIVIDER 11-BIT PASSIVE DIVIDER 11-BIT PASSIVE DIVIDER CURRENT SOURCE CURRENT SOURCE 5-BIT PASSIVE DIVIDER I BL LEFT INPUT LATCH I BR REFERENCE SOURCE Vref I ref R bias BCK RIGHT INPUT LATCH WS TDA1543(T) CONTROL & TIMING ADDRESS POINTER DATA LE MBA844 - 1 2-24 Digital Audio DIGITAL AUDIO DATA CONVERTERS DACs TDA1547 Top-performance bitstream DAC Pulse density modulation Inherently monotonic 2 No zero-crossing distortion High signal-to-noise ratio High over-sampling rate up to 192 fs This top-performance bitstream DAC is a BiMOS circuit without noise shaping, digital filtering or post filtering. It is intended for use in combination with our advanced bitstream digital filter TDA1307. This results in optimum performance by reducing crosstalk between the analog and digital sections of the circuitry, extending the dynamic range, and increasing the signal-to-noise ratio. Furthermore, the BiMOS process used for the DAC allows MOS transistors to be used for the digital logic and drivers, and bipolar transistors to be used to achieve low noise analog circuitry. This optimizes speed and reduces digital noise. Other precautions taken in the DAC design to ensure maximum immunity to crosstalk are fully separated L and R channels and separate supply lines for the analog and digital sections. It is ideally suited to high-quality audio systems such as Compact Disc and DAT players, or in digital amplifiers and digital signal processing systems. QUICK REFERENCE DATA Typ. THD + N at full-scale at 0 dB -101 dB Typ. THD + N at full-scale at -60 dB -51 dB Input data format 1-bit, 192fs Typ. SNR 113 dB Dynamic range 111 dB Channel separation at 1 kHz 115 dB RMS full-scale output voltage 1.0 V Package SDIL32 5 Vdlg 5 Vdlg 5 Vdlg DOR CLK LOGIC & DRIVERS LOGIC & DRIVERS DOL CLK 5 Vdlg 5 Vdlg 5 V dlg 5 V dlg SWITCHED CAPACITOR NETWORK SWITCHED CAPACITOR NETWORK 5 V an 5 V an to analog output stage to analog output stage TDA1547 5 V an RIGHT CHANNEL Digital Audio LEFT CHANNEL 5 V an MBA860 - 1 2-25 DIGITAL AUDIO DATA CONVERTERS DACs TDA1307 High-performance bitstream digital filter Digital mute: attenuation -12 dB 8x oversampling Finite Impulse Response (FIR) filter; 39-bit 24x up-sampling Digital audio output function (biphase-mark encoded) according to IEC958 Fade function; sophisticated volume control Digital silence detection (output) DC-cancelling filter (selectable) Dedicated TDA1547 1-bit output Selectable 3rd/4th-order noise shaping Simple 3-line serial microcontroller command interface Peak detection (continuous) and readout to microprocessor Digital de-emphasis (selectable, fs conscious); 20-bit Power-on reset Standby function The TDA1307 is an advanced oversampling digital filter uses is intended for use with the top-performance bitstream conversion DAC TDA1547. This two-chip approach is ideal for premium performance digital audio applications. Audio data can be applied to the input of the digital filter in I2S, or Sony ("S") 16-, 18- or 20-bit format. A high quality bitstream is produced for application to the input of the DAC, resulting in a very high audio performance. This is largely due to the highly-accurate audio data processing structure of the filter which includes 8x oversampling, digital filtering and up to 4th-order noise shaping. These two ICs (TDA1307 and TDA1547) achieve a high degree of versatility by providing a multitude of easily accessed functional features. Error concealment functions, audio peak data, and an advanced patented digital fade function are all accessible through a simple microprocessor command interface which also provides access to various integrated system settings and functions. QUICK REFERENCE DATA Supply voltage 5V Supply current 75 mA Digital audio output 32-bit words in bi-phase mark code I2S, "S" 16/18/20-bit Input data format Typ. dynamic range* 137 dB Typ. S/N ratio* 142 dB Package SDIL42 (SOT270-1) * with 4th-order noise shaper TDA1307 MULTIPLE FORMAT INPUT INTERFACE ERROR CONCEALMENT INTERPOLATION, MUTING DIGITAL OUTPUIT DIGITAL SILENCE DETECTION DEEMPHASIS FILTER CRYSTAL OSCILLATOR FIR HALFBAND FILTER STAGE 1 : 1 fs - 2 fs DC - CANCELLING FILTER PEAK DETECTION FADE FUNCTION VOLUME CONTROL FIR HALFBAND FILTER STAGE 2 : 2 fs - 4 fs FIR HALFBAND FILTER STAGE 3 : 4 fs - 8 fs CLOCK GENERATION & DISTRIBUTION 8-sample interpolation error concealment MICROPROCESSOR INTERFACE 2 DITHER & SCALING 3 rd / 4 th ORDER NOISE SHAPER MSB202 2-26 Digital Audio DIGITAL AUDIO DATA CONVERTERS ADCs SAA7360GP/SAA7366T/SAA7367GP Bitstream conversion ADCs Stereo, single-ended inputs Input buffer for filtering and pre-scaling Fully differential ADC using 3rd-order Sigma-Delta modulation x128 oversampling, 4-stage decimation filter Switchable high-pass filter to remove DC offsets 1-bit input/output (L) (SAA7360GP) input (L) 1 128 fs 1 HIGH PASS FILTER 2nd DEC FILTER STAGE 1st DEC FILTER STAGE 8 fs input (R) TIMING & CONTROL 1-bit input/output (R) (SAA7360GP) 256 fs/512 fs oscillator (SAA7360GP) 256 fs only oscillator (SAA7366T) SAA7366T system clock output SAA7367GP Supply voltage 4.5 to 5.5 V 4.5 to 5.5 V 4.5 to 5.5 V Crystal frequency 256 or 512 x fs 256 x fs 256 x fs Sampling rate 18 to 53 kHz 18 to 53 kHz 18 to 53 kHz Anti-aliasing suppression >-93 dB >-60 dB >-60 dB In-band ripple <0.0002 dB <0.1 dB <0.1 dB Min. dynamic range 93 dB 90 dB 90 dB Typ. THD + N at -1 dB digital output -90 dB -88 dB -88 dB Analog input voltage VDD/2 5% V VDD/2 5% V VDD/2 5% V Package QFP44 SO24 SO24 Digital Audio output fs SDM 2 OUTPUT INTERFACE MGA519 - 3 Philips offer three bitstream conversion ADCs. They are for use in digital audio playback systems such as digital amplifiers and CD-recordable applications. Each device consists of an input buffer for pre-scaling and anti-aliasing, a 3rd-order Sigma-Delta modulator and decimation filters for anti-aliasing suppression and low in-band ripple. The choice of ADCs allows selection of high or economy performance and package type to meet the application requirements. SAA7360GP SAA7360GP SAA7366T/67T SDM REFERENCE VOLTAGE/ CURRENT I2S 16- or 18-bit selectable output in and two pseudo I2S formats (SAA7360 only) 18-bit output in I2S and one pseudo I2S format (SAA7366 and SAA7367 only) 2 2 2-27 DIGITAL AUDIO DATA CONVERTERS CODECs UDA1325 USB CODEC 2 Complete stereo USB-COCEC system with integrated filtering and line output drivers Supports all USB-compliant audio multimedia devices Supports 12 Mbits/s "full speed" serial data transmission Fully automatic "Plug-and-play" operation The UDA1325 is a stereo bitstreeam ADC, DAC and USB interface specifically designed for USB compliant audio devices and multimedia audio applications such as USB-equipped monitors and telephony devices, and digital audio speakers. It incorporates an analog front-end, USB processor, embedded microcontroller, an Audio-to-Digital Interface (ADIF) and an Asynchronous DAC (ADAC). The USB processor forms the interface between the USB, ADIF, ADAC and microcontroller. Efficient power management mode On-chip master clock oscillators The ADAC includes a Sample Frequency Generator to reconstructs the average sample frequency from the incoming audio samples, a FIFO, a unique audio-feature processing DSP to handle feature processing, digital upsampling filters, a variable hold register, a noise shaper, and a Filter Stream DAC (FSDAC) with integrated filter and line output drivers. Audio information can be applied to the ADAC via the I/O interface, or directly as I2S input data or LSB-justified data with word lengths of 16-, 18- or 20-bits. Soft mute External DSP option via I2S or Japanese digital I/O format On-chip digital de-emphasis Selectable clipping detection/prevention and Dynamic Bass Boost (DBB) Supports multiple audio data I/O formats High SNR with low total harmonic distortion High linearity and wide dynamic range Low power consumption Digital bass and treble tone control Partially programmable USB descriptors via I2C-bus Separate digital volume control for left and right channels Easy application and inexpensive to implement The ADIF consists of a Programmable Gain Amplifier (PGA), an ADC and a decimator filter. The ADIF clock frequency, which is generated by either an Analog Phase Lock Loop (APPL) or oscillator, can be controlled by the microcontroller Several clock frequencies are possible for sampling the analog input signal at different sampling rates. Sound processing features are in line with the USB audio device class specification and include digital de-emphasis; separate digital volume control for left and right channels digital bass and treble tone control; and soft mute. Additional features can be included with the use of an external DSP IC, connected via the I/O-bus. QUICK REFERENCE DATA Supply voltage 5V I2C-bus controlled Yes I2S interface Yes Package 2-28 SDIL42, QFP44 Digital Audio DIGITAL AUDIO DATA CONVERTERS DP VSSX XTAL1b XTAL2b VDDX OSC48 TIMING VDDA3 XTAL2a XTAL1a VSSA3 OSCAD PLL CODECs DM ANALOG FRONT-END UDA1325 2 USB-PROCESSOR GP2/DO GP3/WSO GP4/BCKO GP1/D1 GP0/BCKI GP5/WSI SCL DIGITAL I/O MUX DA WS BCK MICROCONTROLLER SDA FIFO SFG I2S INTERFACE DECIMATOR FILTER AUDIO FEATURE PROCESSING DSP UPSAMPLE FILTERS SHTCB VARIABLE HOLD REGISTER TC TCB RTCB 3TH ORDER NOISE SHAPER VINL PGA LEFT ADC LEFT DAC VINR PGA RIGHT ADC RIGHT DAC VOUTL VOUTR REFERENCE VOLTAGE VREFAD Digital Audio VREFDA MSC529 2-29 DIGITAL AUDIO DATA CONVERTERS CODECs UDA1340M/UDA1341TS Low-voltage, low-power stereo audio ADC/DAC with DSP features 2 Low power, low voltage (3.0 V) stereo audio CODEC ADC with integrated decimation and DC offset cancellation filtering DAC with integrated interpolation filter and noise shaper Selectable system clock frequencies (256 fs, 384 fs and 512 fs) Overload detection for easy record level control Separate power control for ADC and DAC Microcontroller interface Multiple format input interface compatible with I2S-bus, MSB-justified and LSB-justified Supports word lengths up to 20 bits (I2S, MSB) and 16-, 18- and 20-bit (LSB) Range of digital sound processing features Stereo single-ended input configuration Stereo line output under microcontroller volume control High linearity, wide dynamic range, low distortion No analog post-filtering required The UDA1340M/UDA1341TS are single-chip stereo bitstream A/D and D/A converter with built-in digital signal processing features. Operating from a low power supply and offering low power consumption they are ideal for portable digital audio applications incorporating playback and recording functions. DSP features for audio playback, all of which can be controlled via the microcontroller interface, include digital volume control, bass and treble boost, dB-linear volume and tone control, digital de-emphasis (32 kHz, 44.1 kHz and 48 kHz fs) and soft mute. The UDA1341TS is simmilar to the UDA1340M but with added fesatures, such as mixing of two analog signals, as well as mixing signals from the ADC with the digital input signal and digital Automatic Gain Gontrol (AGC). Both ICs support the I2C-bus and MSB-justified data format with word leangths of up to 20-bits, and the LSB-justified serial data format with word leangths of 16, 18 and 20-bits. QUICK REFERENCE DATA UDA1340M UDA1341TS Supply voltage ADC 2.7 to 3.6 V 2.7 to 3.6 V Analog supply current 4.5 mA 12 mA Digital supply current 3 mA t.b.d. Typical THD + N at 0 dB -85 dB -90 dB 95 dB 100 dB Analog supply current 3.5 mA 6.0 mA Digital supply current 3 mA t.b.d. SNR DAC Typical THD + N at 0 dB -95 dB -95 dB SNR 100 dB 102 dB Total power dissipation (typ.) Package 2-30 ADC 27 mW 45 mW DAC 33 mW 33 mW SSOP28 SSOP28 Digital Audio DIGITAL AUDIO DATA CONVERTERS CODECs VINR VINL ADC 2 ADC TEST1 VDDD UDA1340 DECIMATION FILTER TEST2 TEST3 VSSD DC-CANCELLATION FILTER DATAO L3MODE BCK L3-BUS INTERFACE DIGITAL INTERFACE WS L3CLOCK L3DATA DATAI SYSCLK DSP FEATURES OVERFL INTERPOLATION FILTER NOISE SHAPER DAC DAC VOUTR VOUTL MSC532 VINL2 PGA VINR2 PGA ADC2L ADC2R VINL1 VINR2 ADC1L UDA1341TS VDDD ADC1R AGCSTAT DIGITAL AGC DIGITAL MIXER VSSD DECIMATION FILTER OVERFLOW DATAO BCK WS L3CLOCK DIGITAL INTERFACE + MIXER L3-BUS INTERFACE L3MODE L3DATA DATAI DSP FEATURES QMUTE INTERPOLATION FILTER SYSCLK PEAK DETECTOR TEST1 NOISE SHAPER TEST2 VREFA DAC DAC VOUTR VOUTL MSC528 Digital Audio 2-31 DIGITAL AUDIO DATA CONVERTERS CODECs TDA1309H/UDA1309H Low-power, (low-voltage) stereo ADC/DAC 2 Low power stereo CODEC 2.7 V low-voltage version (TDA1309H) Bitstream ADC and bitstream/CC DAC Separate power down modes for ADC and DAC Integrated high-pass filter to cancel DC offset (ADC) Analog loop through function 256 fs system clock frequency for ADC and DAC 192 fs, 256 fs and 384 fs DAC clock frequencies Digital de-emphasis (DAC) Multiple digital I/O formats Overload detector enabling automatic recording level adjustment (ADC) VDDA(AD) analog input VIL BAIL BAOL CURRENT IDAC REFERENCE The TDA1309H/UDA1309H combines a bitstream ADC sampling stereo left and right channels simultaneously, with a bitstream/CC DAC to provide a low power stereo CODEC for digital equipment with recording and playback functions. Operating down to 2.7 V, the TDA1309H low-voltage version is particularly suitable for portable applications. Separate power down modes on both ADC and DAC allow power reduction when either section is not in use and the loop through function bypasses the ADC/DAC and filtering for analog recording/playback, further reducing consumption. 16- and 18-bit I2S-bus and LSB fixed formats are supported. CLKEDGE DADEM TEST0 MODE2 MODE1 TEST1 SYSCLK MODE0 analog output VOL Vref(pos) Vref(neg) ADC Iref DAC requires only one capacitor for analog postfiltering DIGITAL FILTER DACL DAC MODE SELECT DIGITAL INTERFACE DIGITAL INTERFACE DIGITAL FILTER Vm DAref DAC ADC TDA1309H UDA1309H Vm ADref VOL BAOR BAIR analog input VIR VSS(I/O) DAPON ADENB DASDA ADWS DABCK ADBCK DAWS ADSDA OVLOAD ADPON ANLPTR MSC428 DACR VOR analog output VOR QUICK REFERENCE DATA TDA1309H UDA1309H Supply voltage ADC 3V 5V Analog supply current 8 mA 9 mA Digital supply current 0.2 mA 0.2 mA Typical THD + N at 0 dB -85 dB -85 dB 95 dB 95 dB Analog supply current 24 mA 28 mA Digital supply current 20 mA 24 mA SNR DAC Typical THD + N at 0 dB -90 dB -90 dB SNR 104 dB 104 dB ADC 72 mW 140 mW Total power dissipation (typ.) DAC Package 2-32 60 mW 120 mW QFP44 QFP44 Digital Audio 3 DEDICATED SIGNAL PROCESSORS Digital Audio 3-1 DEDICATED SIGNAL PROCESSORS AUDIO MPEG ICs MPEG devices The perceptual audio encoding/decoding scheme defined within the ISO/IEC MPEG-1 (Motion Picture Expert Group) Audio Standard (11172-3) results in considerable reduction of the quantity of data required for digital audio, yet maintains a high level of perceived sound quality. The coding is based on a psycho-acoustic model of the human auditory system and exploits the fact that weak spectral components are inaudible if they are in the proximity (in both time and frequency) of loud components. This phenomenon is called masking. 3 Layers I and II of ISO/MPEG-1 reduce the data by splitting the broadband audio source signal into 32 sub-bands of equal width. The masking threshold (the amount of imperceptible audio energy as a function of frequency) is determined for the given signal by using the psycho-acoustic model. The sub-band samples are then re-quantized to an accuracy that ensures that the spectral distribution of the re-quantization noise does not exceed the masking threshold. This reduction of representation accuracy provides the reduction of the audio data. The re-quantized sub-band samples are multiplexed with side information concerning the actual re-quantization to form the MPEG audio bitstream. digital audio interface DIGITAL AUDIO I/O (DAIO) TDA1315H Stereo filter/CODEC for an MPEG-1 Layer I decoder An MPEG-1 Layer I decoder can be implemented by using the stereo filter/CODEC SAA2520GP together with a digital audio input/output (DAIO) circuit TDA1315H and a stereo DAC as shown in the top figure. Masking threshold processor for an MPEG-1 Layer I encoder An MPEG-1 Layer I encoder can be implemented by using the masking threshold processor SAA2521 with a stereo filter/CODEC SAA2520GP, a digital audio input/output (DAIO) circuit TDA1315H, and a stereo ADC as shown in the bottom figure. 3-2 IEC958 (EAS/EBU) PC control LT bus MPEG coded data SAA2520 STEREO FILTER CODEC MSB208 MPEG 1 Layer I decoder During decoding, the MPEG audio bitstream is de-multiplexed and the side information is used to reconstruct the sub-band signals which are combined to form a broadband audio output signal. Examples of a stereo filter/CODEC for an MPEG-1 Layer I decoder and a masking threshold processor for an MPEG-1 Layer I encoder using our MPEG ICs are given below. More detailed information on these and other MPEC devices, as well as our range of dedicated signal processing ICs is given on the following pages. audio DAC audio ADC IEC958 (EAS/EBU) DIGITAL AUDIO I/O (DAIO) TDA1315H PC control LT bus SAA2521 MASKING THRESHOLD PROCESSOR digital audio interface SAA2520 STEREO FILTER CODEC MPEG coded data MSB209 MPEG 1 Layer I encoder Digital Audio DEDICATED SIGNAL PROCESSORS AUDIO MPEG ICs SAA2502 Audio MPEG decoder Supports all MPEG-1 layer-I and layer-II audio modes Supports all MPEG-1 bit rates and sample frequencies with fully automatic switching L3 microcontroller interface Sample clock switching and on-chip clock generation Automatic digital de-emphasis of decoded audio signal Error concealment Low power consumption MPEG-2 compatible stereo output Supports low sample frequencies (16, 22.05 and 24 kHz) with CRC correction of scale factors Handles byte- and non-byte-aligned input data IEC958 digital output Programmable automatic internal dynamic range compression algorithm Output formats include I2S, SPDIF and 256 (or more) oversampled analog stereo Burst mode data input Programmable variable bit output precision (16-, 18-, 20- or 22-bit) Integrated audio post processing for control of signal level and inter-channel crosstalk De-multiplexing of ancillary data in input bitstream The SAA2502 is a second generation device developed for a wide range of broadcast digital audio applications including digital radio. It is a high feature, general purpose, MPEG-2 decoder supporting both layer-I and layer-II of the MPEG-1 standard as well as meeting all requirements for a stereo MPEG-2 decoder. QUICK REFERENCE DATA Supply voltage 5V I2S interface Yes I2C-bus controlled Yes Package PC MCLKIN MCLKOUT QFP44 X22OUT X22IN L3MODE DIVIDER REF-CLK PHASE COMPARATOR CLOCK GENERATOR DECODING CONTROL L3/I 2C CLOCK L3DATA/I2 CDATA FSCLKIN FSCLKOUT URDA/STOP CDSCL/CDMCL CDSEF/CDMEF analogue right DEQUANTIZATION CDS/CDM DAC analogue left I/P PROCESSOR SD SYNTHESIS CDSWA/CDMWS CDSSY SAA2502H TC1 Digital Audio SPDIF ENCODER TC0 TD1 TD0 TCK TMS TRST SPDIF RESET WS SCK MSB515 3-3 3 DEDICATED SIGNAL PROCESSORS AUDIO MPEG ICs SAA2503 H0 to H7 HA2 MPEG2 audio decoder HA0 to HA2 HR/W HEN 3 Single-chip MPEG2 multichannel audio decoder Decodes MPEG high quality audio: - MPEG1 layer 2 (44.1 kHz) - MPEG2 multichannel layer 2 (48 kHz) - Supports pause frames Outputs 2 channels - quasi surround down-mixing for Left and Right Dolby surround channel (Lt and Rt) - stereo down-mixing for stereo reproduction - stereo signal selection - single channel down-mixing Karaoke modes Linear PCM modes: - down-sampling from 96 to 48 kHz - pass 48 kHz signals IEC 958 output interface (IEC 1937 formatted) IEC 958 output simultaneously available while decoding MPEG2 Output flags for direct control Stand-alone operation possible (self-booting) No external DRAM or SRAM required On-chip PLL for internal clock generation 3.5 or 27 MHz master clock PARALLEL HOST INTERFACE I2C-BUS SERIAL HOST INTERFACE HA0 SDA SLK HOREQ HREQ HACK/PB14 SDB SCKR WSR SAA2503 SCKT GPIO0 to GPIO3 BUSY WST SERIAL AUDIO INTERFACE I2CEN SDI0 SDI1 FLAGS MUTE SDO0 SDO1 ADO ACI SDO2 IEC 958 TRANSMITTER DSCK/OS1 OnCE resrved (19) DSI/OS0 DSO DR MODC reset interrupt MODB PLL PLOCK MODA PCAP RESET EXTAL PINIT MGK396 The SAA2503 is the latest addition to our range of audio MPEG decoders. Although primarily developed for DVD players, its advanced specifications also make it ideally suited to any MPEG2 audio bitstreams application such as set top boxes, multimedia PCs and digital television. With its MPEG2 multichannel audio decoding plus down-mixing, MPEG1 layer 2 decoding , Linear PCM (LPCM) processing , IEC 958 transmitter and serial audio interfaces, the SAA2503 brings together all the necessary audio functions of a DVD player on a single chip. QUICK REFERENCE DATA Supply voltage 5V I2C-bus control Yes I2S interface Yes Package 3-4 LQFP100 Digital Audio DEDICATED SIGNAL PROCESSORS AUDIO MPEG ICs SAA2505 DUET Decoding functions: MPEG II Layer 2 decoding for 7.1, 5.1, 2 channels Virtual Surround effect from 2 loudspeakers MPEG 48 kHz sample rate, bitrate upto 960 kbit/s, including variable bitrate Dolby AC-3 decoding for 5.1 and 2 channels AC-3 48 kHz sample rate, bitrate upto 448 kbit/s Pink noise generator for loudspeaker adjustment S/PDIF (IEC-958) output of PCM or packetized bitstream MPEG II/AC-3 2 channels with Dolby Pro-Logic decoding MPEG II/AC-3 Multi-channel decoding with Dolby Pro-Logic encoding DVD compatible Karaoke decoding DVD Linear PCM modes converted to 48 kHz sample rate and 20 bit Hardware Features: 2 serial inputs, 4 serial outputs 400 kHz I2C 3 control interface The SAA2505 decodes MPEG2 7.1 channels, AC3 5.1 channels, and 8 channel Linear PCM audio signals, and its output can be configured for 7, 5, 4, 3, 2, or 1 channels with or without LFE (subwoofer). The bass signal can be redirected to the subwoofer, so that smaller satellite loudspeakers can be used. Output functions and sound effects: Output configuration for 7, 5, 4, 3, 2, 1 channels with or without LFE Bass redirection for small satellite loudspeakers plus subwoofer Adjustable time delay upto 15 ms for MC-Surround or upto 30 ms for Pro-Logic Adjustable dynamic range compression for MPEG and AC-3 Generation of pseudo surround signals from 2 channel input The chip can generate pseudo surround signals from a two channel input resulting in 3D virtual surround effects from two loudspeakers. Karaoke from AC3 and MPEG has also been implemented, giving the possibility for a second serial input to be mixed into the main signal. The IC contains all the ROM, RAM and DSP cores needed for single-chip operation. QUICK REFERENCE DATA Supply voltage 3V Input and output voltages 5 V (TTL compatable) Package QFP64 ACLK 256 or 384fs DELAY SAA2505 L 8 ch R C bitstream microphone I2S0 IEC1397 PARSER MPEG2 OR AC-3 DECODER I2S1 LFE LC RC PCM/ DOWNSAMPLE LT, RT LS L, R, C PRO-LOGIC RS 1.8 SWITCH 8 ch NOISEGENERATOR DOWNMIX AND VOLUME I 2S OUTPUTS DOWNMIX SPDIF mic bitstream MSC521 Digital Audio 3-5 DEDICATED SIGNAL PROCESSORS AUDIO MPEG ICs SAA2520GP Stereo filter and CODEC for MPEG layer 1 audio applications Stereo filter/CODEC Layer I compatible Microcontroller interface 3 Low power consumption I2S interface Clock generator Required for Layer I encoding Options for Layer I decoding Microcontrolled and stand-alone modes Stereo Sample clock switching Variable bit precision The SAA2520 performs the sub-band filtering and audio frame CODEC functions to provide efficient audio compression/ decompression for MPEG (11172-3) Layer1 applications. It is capable of functioning as a stand-alone decoder but requires the addition of the adaptive masking threshold processor SAA2521 to function as a highly efficient encoder. QUICK REFERENCE DATA Supply voltage 3.8 to 5 V Operating temperature range -40 to 85 C Package CLK24 X22OUT X24OUT CLK22 X22IN X24IN QFP44 V DD SBDA CLOCK GENERATOR FS256 SAA2520 SUB-BAND SERIAL INTERFACE SBCL SBWS SBDIR SBMCLK SBEF STEREO SUB-BAND FILTER PROCESSOR PASC CODEC PROCESSOR MUTEDAC DEEMDAC ATTDAC SWS SCL SDA BASEBAND SERIAL INTERFACE & PEAK DETECTOR FILTERED DATA INTERFACE MICROPROCESSOR INTERFACE & CONTROL MSB242 FDAF V SS FDAC 3-6 FSYNC FRESET SYNCDAI FDIR LTCNT0 LTCNT1 LTCLK LTENA PWRDWN LTDATA URDA RESET Digital Audio DEDICATED SIGNAL PROCESSORS AUDIO MPEG ICs SAA2521GP MPEG masking threshold processor Masking threshold processor Layer I compatible Microcontroller interface Low power consumption I2S interface Required for Layer I encoding Stereo 3 Sample clock switching Variable bit precision The SAA2521 performs the adaptive allocation and scaling function for calculating the masking thresholds and sub-band sample accuracy in MPEG layer 1 applications. The SAA2521 is intended for use in conjunction with the stereo filter CODEC SAA2520. QUICK REFERENCE DATA Supply voltage 3.8 to 5 V Operating temperature range -40 to 85 C Package QFP44 VDD 14,24,40 SWS FS256 FDAC FDAF INTERFACE COMPENSATION DELAY SCL INTERFACE NODONE RESOL0 RESOL1 FDIR FRESET FSYNC SCALE SAA2521 ALLOCATION AND SCALING CALCULATION CONTROL TEST3 TEST4 LTDATA LTCNT1 LTCNT0 LTENA LTCLK LTDATAC LTCNT1C LTCNT0C LTENC LTCLKC LT INTERFACE CLK24 RESET PWRDWN VSS Digital Audio MSB243 3-7 DEDICATED SIGNAL PROCESSORS PASC ICs SAA2003 Stereo filter and CODEC Single-chip stereo filter and codec Wide operating voltage range Low-power consumption 3 Sleep mode for low power and low EMI Transparent serial audio data mode in sleep IEC 958 digital output Peak level detector for start of track detection or VU meter Versatile fade processor; slow/fast fade, mute, 12 dB attenuation Serial audio interface for I2S or EIAJ formats Error concealment The SAA2003 performs the sub-band filtering and audio frame CODEC functions in a Precision Adaptive Sub-band Coding (PASC) system. Although it can be used as a stand-alone decoder for playback-only applications, it requires the Adaptive Allocation and Scale Factor processor SAA2013 to perform PASC encoding in a DCC record system. QUICK REFERENCE DATA Three-wire L3 bus microcontroller interface Three sample rates: 32, 44.1 and 48 kHz Internal or external clock source Three programmable outputs Supply voltage 2.7 to 5.5 V Supply current @3V 32.5 mA @5V 68.8 mA in sleep mode 400 A Package QFP44 X22OUT X24OUT CLK24 FS256 X22IN X24IN CLK22 X256 MUTEDAC CLOCK GENERATOR TEST0 ATTDAC TEST1 DEEMDAC IECOP IEC 958 OUTPUT FS128 6.15 MHz FS256 SBMCLK SBWS WS SCK SD1 SD2 SBCL BASEBAND SERIAL INTERFACE AND PEAK DETECTOR SUBBAND SERIAL INTERFACE SAA2003 SBDA SBDIR SBEF STEREO SUBBAND FILTER PROCESSOR PASC CODEC PROCESSOR URDA MICROCONTROLLER INTERFACE AND CONTROL FILTERED DATA INTERFACE RESET SLEEP FDCL FSYNC 3-8 FDAO FDWS LTCNT0 FDAI L3DATA LTCNT1 L3MODE L3CLK SYNCDAI FDIR MSC530 Digital Audio DEDICATED SIGNAL PROCESSORS PASC ICs SAA2013 Adaptive allocation and scaling for PASC coding in DCC systems Wide operating voltage range Low power consumption: 13 mW @ 3.0 V Low power decode mode: 1 mW @ 5.0V Sleep mode for low power and low EMI Sophisticated allocation algorithm Optimum sound quality Three-wire L3 bus microcontroller interface Stereo or 2-channel mono recording 3 The SAA2013 performs the adaptive allocation and scaling function in a Precision Adaptive Sub-band Coding (PASC) system. It is only used during recording, and so is not required in playback-only applications. QUICK REFERENCE DATA To complete the PASC processor, the SAA2003 stereo filter and CODEC is required. Supply voltage 2.7 to 5.5 V Supply current @3V 5 mA @5V 10 mA in sleep mode 400 A Package QFP44 FS256 FRESET FDAI FDIR FSYNC L3MODEM L3CLKM MICROCONTROLLER BUS L3DATAM CONTROL AND SYNC COMPENSATION DELAY FDCL FDWS SLEEP CLK24 SAA2013 RESET FDAO L3MODEC L3CLKC SFC BUS ALLOCATION AND SCALE FACTOR COMPUTATION L3DATAC NODONE RESOL0 Digital Audio RESOL1 MSC531 3-9 DEDICATED SIGNAL PROCESSORS MISCELLANEOUS ICs SAA7740H Digital audio processing IC (DAPIC) 3 Hardware features Two digital audio inputs in the I2S format (four audio channels) Two digital audio outputs in the I2S format (four audio channels) Independent input and output interfaces Slave input and output interfaces Slave processing I2C microcontroller interface DC filtering at the inputs One programmable 2nd-order digital filter unit Two MAC units (24x16 bits/MAC) DRAM interface and address computation unit for external delay lines On-chip coefficient and external delay-line address storage Hard-controlled soft mute via the MUTE pin Hard-controlled soft de-mute via the RESET pin Software features 5-band parametric equalizer with selectable centre freq., slope and boost/cut gain settings of 12 dB Stereo width control from mono to stereo to spatial stereo Stereo listening environment acoustic effects (e.g. concert hall) with 8 coefficients and 8 delayed taps per channel External delay-line processing for delays of up to 1 s Reverberation with selectable reverberation time (up to 5 s) and energy Three different surround sound programs to obtain a spatial effect with four loudspeakers Passive Dolby surround sound processing, with addition of an external dynamic noise reduction IC Karaoke processing Dual 16th-order correction filtering Quad 8th-order correction filtering Digital volume and balance control Soft-controlled soft mute/de-mute via the microcontroller interface Input switching matrix Output front and rear switching matrix This is a very flexible function-specific 4-channel digital signal processor (DSP) for audio signals. In the general DAPIC mode, it can provide listening environment enhancements such as equalization, concert hall-effects, reverberation, surround sound/karaoke processing, and digital volume/balance control. In the dual/quad filter modes, the IC can also be reconfigured as a dual or quad digital filter with programmable frequency characteristics. A stereo expansion mode provides stereo digital filtering, 5-band graphic equalization and complex stereo expansion for headphone out-of-head and incredible stereo applications. Function parameters, correction coefficients and a number of configurations can be downloaded to the IC via an I2C-bus interface. QUICK REFERENCE DATA Supply voltage range Total supply current (fc = 16.9344 Mhz) Total power dissipation (fc = 16.9344 Mhz) Typical crystal frequency Operating temperature range Package 3-10 4.5 to 5.5 V 145 mA 700 mW 16.9344 MHz -40 to +85 C QFP64 Digital Audio DEDICATED SIGNAL PROCESSORS MISCELLANEOUS ICs SAA7740H CLOCK COUNTER XTAL DIW DID 2 I2 S-BUS INPUT INPUT BUFFER DIC DIGITAL SIGNAL PROCESSING CORE 2nd-ORDER FILTER MAC OFFSET FILTER REGISTERS 16 PROGRAM COUNTER PROGRAMMABLE ROM DOW OUTPUT BUFFER 2 I2 S-BUS OUTPUT DOD DOC 16 7 COEFFICIENT RAM A0 to A8 ADDRESS CONTROL UNIT 3 DRAM D0 to D3 16 SAA7740H SCL SDA I 2 C-BUS INTERFACE MSB469 TDA1308T VSS VDD Class AB stereo headphone driver INA Large output voltage swing No switch ON/OFF clicks INA Excellent power supply ripple rejection Short circuit resistance INB OUTA INB OUTB TDA1308T MSB207 Low power consumption High performance; high S/N ratio, high slew rate, low distortion The TDA1308T is a high performance integrated class AB headphone driver providing a high SNR and slew rate, combined with low distortion. Fabricated with a 1 m CMOS process and available in either a DIP8 or surface-mount SO8 package gives this IC the low power consumption and small size which is vital for battery-powered portable digital audio applications. QUICK REFERENCE DATA Supply voltage Single 5 V (3 to 7 V) Dual 2.5 V ( 1.5 to 3.5 V) Supply current 3 mA Typical power dissipation 15 mW SNR 110 dB Typical THD + N at 0 dB -70 (0.03) dB% Power supply ripple rejection Channel separation 70 dB Maximum output power 60 mW Operating temperature Package Digital Audio 90 dB -40 to +85 C Single DIP8 Dual SO8 3-11 DEDICATED SIGNAL PROCESSORS MISCELLANEOUS ICs SAA7710T Dolby surround sound circuit Adaptive matrix 7 kHz low-pass filters Adjustable delay for surround channel 3 Modified Dolby B noise reduction Noise sequencer Output volume control Automatic balance and master level control with DC-offset filter Hall and matrix surround sound functions Optional clock divider for crystal oscillator I2C-bus mode control Centre mode control 2 stereo I2S digital input channels 2 stereo I2S digital output channels This is a high-quality audio-performance add-on digital signal processor. It comprises all the necessary features on chip for complete Dolby Surround Pro Logic sound. In addition, the device also incorporates either: - 3-band parametric equalizer on main channels left, centre, right (fs = 44.1 kHz), or - 5-band parametric equalizer on main channels left, centre, right (fs = 32 kHz), or - tone control (bass/treble) on all four output channels (fs = 44.1 kHz) QUICK REFERENCE DATA Supply voltage These features can be used to replicate surround sound as an alternative to Dolby Pro Logic, or when the input is non-Dolby surround coded. 4-channel active surround sound 20 to 20 000 Hz On-chip delay line (fs =44.1 kHz) 45 ms Package L IIS_DATAIN1 IIS_DATAIN2 DOLBY PRO LOGIC OR HALL/MATRIX SURROUND C R SURROUND CHANNEL DELAY LINE DSP_RESET CONTROL SO32 SAA7710 AUTO BALANCE FUNCTION IIS inputs 4.5 to 5.5 V L/R 3- OR 5-BAND PARAMETRIC EQUALISER OR TONE CONTROL IIS_DATAOUT1 C/R IIS_DATAOUT2 IIS outputs IIS_DATAOUT3 (not used) S IIC BUS TRANSCEIVER OSC. MGC727 DSP_IN1 SDA DSP_IN2 DSP_OUT1 DSP_OUT2 3-12 SCL AD XTAL OSC Digital Audio DEDICATED SIGNAL PROCESSORS MISCELLANEOUS ICs TDA1315H Digital audio input/output circuit (DAIO) Transceiver for SPDIF/IEC958 encoded signals Highly sensitive input for transformer-coupled links TTL level input for optical links Built-in IEC input selector Built-in IEC feed-through function Automatic sample frequency detection This is a completely integrated CMOS transceiver for biphasemark encoded digital audio signals that conform to the SPDIF (Sony Philips Digital Interface) and IEC958 interface standards (consumer mode). System clock recovery from input signal Error detection and concealment PLL lock detection in transmit mode Serial audio interface conforms to I2S format Auxiliary I2S input for ADC Audio output selector Microprocessor-controlled and stand-alone modes LED drive capability (sample frequency and error indication) Pin-selectable device address for microprocessor interface In the receiver mode, the IC adjusts automatically to one of the three standardized sample frequencies (32 kHz for digital satellite signals, 44.1 kHz for compact disc signals, or 48 kHz for digital audio tape signals), decodes the input signal, and separates the audio and control data. A clock signal of 256fs or 384fs is generated to serve as a master clock signal for the digital audio system. 128-byte buffer for user data Bytewise exchange of user data with microprocessor Decoding of Compact Disc subcode Q-channel data Support for Serial Copy Management System (SCMS) In the transmitter mode, the IC multiplexes the audio, control and user data and encodes them for subsequent transmission via a cable or optical link. QUICK REFERENCE DATA Supply voltage 3.4 to 5.5 V Operating temperature range -40 to +85 C Package VDDD I 2 SOEN DEEM VSSD I 2 SSEL MUTE INVALID UNLOCK CHMODE TDA1315 WS SCK SD SDRUX SQFP44 FS44 FS32 FS48 LED DRIVERS COPY CONTROL TESTA I 2 S TRANSCEIVER FIFO audio data PD BIPHASE MODULATOR TESTB IECOEN IECO TESTC IEC OUTPUT SELECT FRAME AND ERROR DETECT BIPHASE DEMODULATOR RESET CTRLMODE non audio data SYSCLK IECIN1 IECIN0 STROBE LDATA IEC OUTPUT SELECT MICROPROCESSOR INTERFACE CLOCK AND TIMING LCLK LMODE MGC677 IECSEL CLKSEL RCint Digital Audio VDDA RCfil Vref SYSCLK0 V SSA LADDR UDAVAIL SYSCLK1 3-13 3 DEDICATED SIGNAL PROCESSORS MISCELLANEOUS ICs TDA1373H General digital input (GDIN) circuit with filters 3 Fabricated in 0.8 m double-metal CMOS Four operating modes (SRC, AD/DA, SLAVEVCO, SLAVE-VCXO) Full digital sampling rate conversion (SRC) over a wide range of input sampling rates Fast and automatic detection and locking to the input sampling rate with continuous tracking Digital PLL with adaptive bandwidth which removes jitter on the digital audio input Audio outputs soft muted during loop acquisition Full linear-phase processing based on all-FIR filtering On-chip fully-digital IEC958 demodulator for digital input signals (AES/EBU or SPDIF format) Extended input sampling frequency range IEC958 Channel Status (CS) and User Channel (UC) outputs On-chip CS and/or UC demodulation and buffering (consumer and professional format) Dedicated sub-code processing for CD Final output quantization to 16/18/20 bits with optional in-audio-band noise shaping Bitstream input and output for coupling to 1-bit ADC and DAC I2S and Japanese serial input formats supported for SRC and DAC functions I2S and Japanese serial output formats supported for SRC and ADC functions I2S and Japanese 4x oversampled serial output available for SRC and ADC functions 8-bit digital gain/attenuation control Switchable DSP interface (I2S input and output) for additional audio processing Additional clock outputs available at 768, 384, 256 and 128fs out 3-line serial microcontroller interface compatible with Philips CD I.C. protocol (HCL) In the SRC (Sample Rate Conversion) mode, this very versatile IC can perform high-quality sample rate conversion of digital audio signals. I reads several serial input formats and includes a Audio Digital Input Circuit (ADIC) for input signals in the IEC958 format (also known as AES/EBU or SPDIF signals). An internal PLL removes excessive jitter from the incoming digital audio signals without the need for analog loop electronics. Inaudio-band noise shaping can limit the standard 20-bit output word to 16 or 18 bits. In the AD/DA mode, the on-chip digital filters can be used for bitstream A/D and D/A conversion. In the slave-VCO and slave-VCXO modes. the internal PLL can be reconfigured to operate in a slave mode wherein the IC is locked to the incoming sampling rate. QUICK REFERENCE DATA Supply voltage range (fs out = 44.1 kHz) Total supply current (fs out = 44.1 kHz) Total power dissipation (fs out = 44.1 kHz) SRC THD + N over the 0 to 20 kHz band (1 kHz, 20 bits input and output) SRC THD + N over the 0 to 20 kHz band (1 kHz, 16 bits input and output) Pass-band ripple for up-sampling and down-sampling filters Selectable stop-band suppression for 64x up-sampling filters Stop-band suppression for 128x down-sampling filters 166 mA 830 mW -113 dB -95 dB >0.004 dB 70 to 50 dB 80 dB Maximum output sample frequency 55 kHz AC input voltage at IEC input (DIIS) 0.2 Vp-p Package 3-14 4.75 to 5.5 V QFP64 Digital Audio DEDICATED SIGNAL PROCESSORS MU USER STATUS EXTRACTION U EM LD DA MICROCONTROLLER INTERFACE XTLI XTLO CLI CL01 CL02 CL03 CL04 X-TAL OSCILLATOR 128fo CL 256fo CEN 384fo CUS 768fo BS MISCELLANEOUS ICs PV LOCK IEC 958 DECODER SA C WS PO DI1O DI1D CLOCK SHOP CHANNEL STATUS EXTRACTION MM1 GENERAL CONTROL DI1 DI1S DATA SLICER 3 DI2 PHASE DETECTOR LOOP FILTER HOLD FSL VCO MM0 64fo 4x UPSAMPLING FIFO 16 x UPSAMPLING VARIABLE HOLD DO2 DO2D I2 S OUT DO2W DO2C DSO TST1 TST2 DO1 RST DNI AIL AIR 32 x DOWNSAMPLING 4x DOWNSAMPLING stereo DO1D 2 I S OUT DO1W DO1C IN-BAND NOISE SHAPER TDA1373H FO AO DI2 ATTENUATOR BITSTREAM DIGITAL FILTER AOL1 DAC OUTPUT I 2S OUT AOR1 CLD HOLD I 2S IN MSB468 - 1 FOD FOC FOW DI2D DI2W DI2C Digital Audio 3-15 A APPENDICES Digital Audio A-1 APPENDICES APPENDIX 1 DOCUMENTATION Datasheets A datasheet or preliminary technical information on most of the devices in this Designer's Guide is available in PDF format for downloading from our WWW site (http://www.semiconductors.philips.com/). Data Handbooks and loose leaf data sheets of recently released ICs are also available. Please contact your local Philips sales office for more information (see address list on the back cover of this brochure). Relevant Data Handbooks IC01: Semiconductors for Radio and Audio Systems IC12: I2C Peripherals IC22: Multimedia ICs A 9397 750 01121 9397 750 00306 9397 750 01061 Relevant Designer's Guides Compact Disc designer's guide Multimedia PC designer's guide Digital Media Broadcast designer's guide Portable and home hi-fi/radio designer's guide Analog and digitally-enhanced TV designer's guide Car radio designer's guide 9397 750 00952 9397 750 00726 9397 750 02396 9397 750 00907 9397 750 02692 9397 750 02687 Application and Lab. reports relating to stereo audio ADCs and DACs TDA1541A stereo 16-bit D to A converter for medium and high-end performance digital audio applications TDA1547 TOP-GRADE STEREO BITSTREAM DAC Application and performance of the SAA7360 bitstream audio ADC Application and performance of the SAA7366 bitstream audio ADC Application and performance of TDA1545(T): continuous calibration audio DAC Single active stage 3rd-order I-to-V filtering for low-end current output DACs TDA1547 top-grade stereo bitstream digital-to-analog converter Bitstream digital audio reconstruction system A printed-circuit board for the combination of TDA1307 bitstream digital filter and TDA1547 bitstream DAC Audio performance measurements on bitstream unicon I featuring TDA1315, TDA1307 and TDA1547 A PCB for the TDA1305T digital filter and bitstream/continuous calibration DAC TDA1306T/TDA1386T noise shaping filter DAC Audio performance measurements on bitstream Unicon I featuring TDA1315, TDA1307 and TDA1547 Supplement: Bitstream Unicon II digital audio converter TDA1548T(Z): low-power, low-voltage headphone filter DAC TDA1309H low-voltage low-power stereo bitstream ADC/DAC Application and performance of the SAA7360GP/M3 bitstream audio ADC (Version 1.0) A-2 9398 074 30011 nba/an9006 JRA/AN93001 JRA/AN93003 NBA/AN9101 NBA/AN9107 NBA/AN9006 NBA/AN9303 NBA/AN9305 NBA/AN9307 NBA/AN9311 NBA/AN9312 NBA/AN9308 NBA/AN9310 NBA/AN9507 NBA/AN9510 AN96009 Digital Audio APPENDICES APPENDIX 1 Brochures relating to stereo audio ADCs and DACs Bitstream conversion USB audio ICs; UDA1321T USB DAC TDA1547 stereo top-performance bitstream digital-to-analog converter IC 9398 379 80011 9397 750 01072 - Application notes related to dedicated signal processors Outline of a layer-1 MPEG decoder using the SAA2520 An economical low-pass filter design for a 1-bit DAC in the MPEG Audio Decoder SAA2502H User Guide for the SAA2502H Demonstration Unit (Version 1.0) MPEG layer-1 audio compression/decompression chip-set Design of 8 kHz-LP and 4 kHz-LP measurement filters User guide for the Philips SAA2520/SAA2521 MPEG audio layer 1 demonstration unit SAA7274 Audio Digital Input Circuit for converting SPDIF signals into I2S signals TDA1315 Digital Audio Input/Output circuit Digital Audio SAU/AN92012 AN96082 AN96019 SAU/AN92013 AT-AU18/89 SAU/AN93016 NBA/AN9102 NBA/AN9309 A A-3 APPENDICES APPENDIX 2 INDEX OF TYPE NUMBERS A TYPE NUMBER DESCRIPTION SAA2003H PASC stereo filter and CODEC 3-8 SAA2013H PASC adaptive allocation and scaling 3-9 SAA2502 MPEG audio decoder 3-3 SAA2503 MPEG audio decoder 3-4 SAA2505 MPEG DUET 3-5 SAA2520GP MPEG stereo filter and CODEC 3-6 SAA2521GP MPEG masking threshold processor SAA7360GP Bitstream conversion ADC 2-27 SAA7366T Bitstream conversion ADC 2-27 SAA7367T Bitstream conversion ADC 2-27 SAA7710T Dolby surround sound circuit 3-12 SAA7740H Digital audio processor 3-10 TDA1305T(AT) Stereo 1fs bitstream CC-DAC 2-13 TDA1306T Bitstream/CC noise shaping filter DAC 2-17 TDA1307 High-performance bitstream digital filter 2-26 TDA1308T Headphone driver 3-11 TDA1309H Low-power stereo bitstream ADC/DAC 2-32 TDA1310A(AT) Stereo CC-DAC with current output 2-18 TDA1311A(AT) Stereo CC-DAC with voltage output 2-20 TDA1312A(AT) Stereo CC-DAC with voltage output 2-20 TDA1313(T) Stereo CC-DAC with voltage output 2-20 TDA1314T Quadruple filter DAC 2-22 TDA1315H Digital audio input/output circuit 3-13 TDA1373H General digital input circuit 3-14 TDA1386T Bitstream/CC noise shaping filter DAC 2-17 TDA1387T Stereo CC-DAC with current output 2-18 TDA1388T Bitstream CC-DAC for CD-ROM audio applications 2-14 TDA1541A Stereo high-performance 16-bit DAC 2-23 TDA1541A/S1 Stereo high-performance 16-bit DAC 2-23 TDA1541A/S2 Stereo high-performance 16-bit DAC 2-23 TDA1541A/R1 Stereo high-performance 16-bit DAC 2-23 TDA1543(T) Dual 16-bit DAC (economy version) 2-24 TDA1545A(AT) Stereo CC-DAC with current output 2-18 TDA1547 Dual top-performance bitstream DAC 2-25 TDA1548T Bitstream CC-DAC with headphone driver 2-15 TDA1549T Stereo 4fs bitstream CC-DAC 2-16 UDA1309H Low-power stereo bitstream ADC/DAC 2-32 UDA1320TZ Low-voltage low-cost stereo filter DAC 2-10 UDA1321T USB DAC 2-12 UDA1322TS Low-voltage stereo filter DAC with DSP 2-10 UDA1324TS Ultra low-voltage stereo filter DAC 2-10 UDA1325T USB ADC/DAC 2-28 UDA1340M Low-power stereo ADC/DAC with DSP features 2-30 UDA1341TS Low-power stereo ADC/DAC with DSP features 2-30 A-4 PAGE 3-7 Digital Audio