LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 LME49726 High Current, Low Distortion, Rail-to-Rail Output Audio Operational Amplifier Check for Samples: LME49726 FEATURES APPLICATIONS * * * * * * * * * 1 2 * * * * Rail-to-Rail Output Easily Drives 2k Loads to within 4mV of Each Power Supply Voltage Rail Optimized for Superior Audio Signal Fidelity Output Short Circuit Protection High Output Drive (>300mA) Available in VSSOP Exposed-DAP Package Portable Audio Amplification Preamplifiers and Multimedia Equalization and Crossover Networks Line Drivers and Receivers Active Filters DAC I-V Converter Gain Stage ADC Front-End Signal Conditioning KEY SPECIFICATIONS DESCRIPTION * * The LME49726 is a low distortion, low noise rail-torail output audio operational amplifier optimized and fully specified for high performance, high fidelity applications. The LME49726 delivers superior audio signal amplification for outstanding audio performance. The LME49726 has a very low THD+N to easily satisfy demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49726 provides output current greater than 300mA at 5V. Further, dynamic range is maximized by an output that drives 2k loads to within 4mV of either power supply voltage. * * * * * * * * Power Supply Voltage Range: 2.5 to 5.5 V Quiescent Current per Amplifier at 5V: 0.7 mA (Typ) THD+N, AV = 1, fIN = 1kHz, RL = 10k: - (VOUT = 3.5VP-P, VDD = 5.0V): 0.00008 % (Typ) - (VOUT = 1.5VP-P, VDD = 2.5V): 0.00002 % (Typ) Equivalent Input Noise (f = 10k): 8.3 nV/Hz (Typ) Slew Rate: 3.7 V/s (Typ) Gain Bandwidth Product: 6.25 MHz (Typ) Open Loop Gain (RL = 10k): 120 dB (Typ) Input Bias Current: 0.2 pA (Typ) Input Offset Voltage: 0.5 mV (Typ) PSRR (DC): 104 dB (Typ) The LME49726 has a supply range of 2.5V to 5.5V. Over this supply range the LME49726's input circuitry maintains excellent common-mode and power supply rejection, as well as maintaining its low input bias current. The LME49726 is unity gain stable. 160.0 0.80 0.75 SUPPLY CURRENT (mA) VOLTAGE NOISE (nV/ Hz) 140.0 120.0 100.0 80.0 60.0 40.0 0.65 0.60 0.55 20.0 0.0 10 0.70 100 1000 10000 100000 FREQUENCY (Hz) Figure 1. Input Voltage Noise vs Frequency VDD = 3V 0.50 1.25 1.50 1.75 2.00 2.25 2.50 2.75 POWER SUPPLY (Vs) Figure 2. Supply Current vs Supply Voltage per Amplifier, RL = No Load, AV = -1 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2008-2013, Texas Instruments Incorporated LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com Typical Connections VIN R2 R1 VIN R2 R1 VDD VDD - VOUT - VDD/2 + + VOUT RL VDD/2 VEE Figure 3. Inverting Configuration Split Supplies Figure 4. Inverting Configuration Single Supplies Connection Diagram INVERTING INPUT A 1 8 2 7 + - NON-INVERTING INPUT A VSS VDD OUTPUTB + - OUTPUTA 3 6 4 5 INVERTING INPUT B NON-INVERTING INPUT B Figure 5. See Package Number DGN0008A 2 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) (2) (3) Power Supply Voltage VS = VSS-VDD Input Voltage Output Short Circuit 6V -65C to 150C Storage Temperature (VSS) - 0.7V to (VDD) + 0.7V (4) Continuous Power Dissipation Internally Limited ESD Rating (5) ESD Rating 2000V (6) 200V Junction Temperature Thermal Resistance (1) (2) (3) (4) (5) (6) 150C JA (DGN0008A) 72C/W Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified. The Electrical Characteristics tables list specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not ensured. If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, JA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA) / JA or the number given in Absolute Maximum Ratings, whichever is lower. Human body model, applicable std. JESD22-A114C. Machine model, applicable std. JESD22-A115-A. OPERATING RATINGS (1) Temperature Range TMIN TA TMAX (1) -40C TA 125C 2.5V VS 5.5V Supply Voltage Range Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 3 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS (VDD = 5.0V and VDD = 2.5V) The following specifications apply for the circuit shown in Figure 1. VDD = 5.0V and VDD = 2.5V, VSS = 0.0V, VCM = VDD/2, RL = 10k, CLOAD = 20pF, fIN = 1kHz, BW = 20-20kHz, and TA = 25C, unless otherwise specified. Symbol THD+N Parameter Total Harmonic Distortion + Noise LME49726 Conditions Typical (1) Limit (2) Units (Limits) AV = -1, VOUT = 3.5Vp-p, VDD = 5V RL = 600 RL = 2k RL = 10k 0.0008 0.0002 0.00008 % % % AV = -1, VOUT = 1.5Vp-p, VDD = 2.5V RL = 600 RL = 2k RL = 10k 0.001 0.0008 0.0002 % % % GBWP Gain Bandwidth Product 6.25 5.0 MHz (min) SR Slew Rate AV = +1, RL = 10k 3.7 2.5 V/s (min) ts Settling time AV = 1V step 0.1% error range 0.001% error range 800 1.2 eN Equivalent Input Noise Voltage fBW = 20Hz to 20kHz (A-weighted) 0.7 f = 10kHz 8.3 nV/Hz eN Equivalent Input Noise Density f = 1kHz 10 nV/Hz f = 100Hz 24 nV/Hz ns s 1.25 VRMS (max) IN Current Noise Density f = 1kHz 0.75 VOS Input Offset Voltage VIN = VDD/2, VO = VDD/2, AV = 1 0.5 VOS/Temp Average Input Offset Voltage Drift vs Temperature 40C TA 85C 1.2 PSRR Power Supply Rejection Ratio 2.5 to 5.5V, VCM = 0, VDD/2 104 ISOCH-CH Channel-to-Channel Isolation fIN = 1kHz 94 dB IB Input Bias Current VCM = VDD/2 0.2 pA IOS/Temp Input Bias Current Drift vs Temperature -40C TA 85C 35 nA/C IOS Input Offset Current VCM = VDD/2 VIN-CM Common-Mode Input Voltage Range CMRR Common Mode Rejection Ratio 1/f 1/f Corner Frequency AVOL Open-Loop Voltage Gain VOUTSWING Output Current IS Quiescent Current per Amplifier (2) 4 85 0.2 95 VOUT = VDD/2 120 mV (max) V/C dB (min) pA VDD-1.6 VSS+0.1 V (min) 80 dB (min) 2 kHz 100 dB (min) RL = 2k to VDD/2 VDD-0.004 VSS +0.004 V (min) V (max) RL = 16 to VDD/2 VDD -0.33 VSS+0.33 V (min) V (max) VOUT = 5V, VDD = 5V 350 mA VOUT = 2.5V, VDD = 2.5V 160 mA Maximum Output Voltage Swing IOUT (1) 0.1V < VDD - 1.6V pA/Hz 2.25 IOUT = 0mA, VDD = 5V 0.7 1.1 mA (max) IOUT = 0mA, VDD = 2.5V 0.64 1.0 mA (max) Typical values represent most likely parametric norms at TA = +25C, and at the Recommended Operation Conditions at the time of product characterization and are not ensured. Datasheet min/max specification limits are specified by test or statistical analysis. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS THD+N vs Output Voltage VDD = 1.25V, VSS = -1.25V, RL = 600 AV = -1, f = 1kHz, BW = 22-22kHz THD+N vs Frequency VDD = 1.25V, VSS = -1.25V, RL = 600 VO = 1.5VP-P, BW = 22-80kHz 0.1 0.01 0.01 THD+N (%) THD+N (%) 0.1 0.001 0.0001 0.01 0.001 0.1 1 0.0001 10 10 100 1k 10k 100k FREQUENCY (Hz) OUTPUT VOLTAGE (V) Figure 6. Figure 7. THD+N vs Output Voltage VDD = 1.25V, VSS = -1.25V, RL = 10k AV = -1, f = 1kHz, BW = 22-22kHz THD+N vs Frequency VDD = 1.25V, VSS = -1.25V, RL = 10k VO = 1VP-P, BW = 22-80kHz 0.1 0.01 0.01 THD+N (%) THD+N (%) 0.1 0.001 0.0001 0.01 0.001 0.1 1 0.0001 10 10 100 1k 10k 100k FREQUENCY (Hz) OUTPUT VOLTAGE (V) Figure 8. Figure 9. THD+N vs Output Voltage VDD = 2.50V, VSS = -2.50V, RL = 600 AV = -1, f = 1kHz, BW = 22-22kHz THD+N vs Frequency VDD = 2.50V, VSS = -2.50V, RL = 600 VO = 3.5VP-P, BW = 22-80kHz 0.1 0.01 0.01 THD+N (%) THD+N (%) 0.1 0.001 0.0001 0.01 0.001 0.1 1 10 0.0001 10 100 1k 10k 100k FREQUENCY (Hz) OUTPUT VOLTAGE (V) Figure 10. Figure 11. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 5 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) THD+N vs Output Voltage VDD = 2.50V, VSS = -2.50V, RL = 10k AV = -1, f = 1kHz, BW = 22-22kHz THD+N vs Frequency VDD = 2.50V, VSS = -2.50V, RL = 10k VO = 1VP-P, BW = 22-80kHz 0.1 0.1 0.01 THD+N (%) THD+N (%) 0.01 0.001 0.001 0.0001 0.00001 0.01 0.1 1 0.0001 10 10 100 1k 10k 100k FREQUENCY (Hz) OUTPUT VOLTAGE (V) Figure 12. Figure 13. THD+N vs Output Voltage VDD = 2.75V, VSS = -2.75V, RL = 600 AV = -1, f = 1kHz, BW = 22-22kHz THD+N vs Frequency VDD = 2.75V, VSS = -2.75V, RL = 600 VO = 3.5VP-P, BW = 22-80kHz 0.1 0.1 0.01 THD+N (%) THD+N (%) 0.01 0.001 0.001 0.0001 0.01 0.1 1 0.0001 10 10 100 1k 10k 100k OUTPUT VOLTAGE (V) FREQUENCY (Hz) Figure 14. Figure 15. THD+N vs Output Voltage VDD = 2.75V, VSS = -2.75V, RL = 10k AV = -1, f = 1kHz, BW = 22-22kHz THD+N vs Frequency VDD = 2.75V, VSS = -2.75V, RL = 10k VO = 3.5VP-P, BW = 22-80kHz 0.1 0.1 0.01 THD+N (%) THD+N (%) 0.01 0.001 0.001 0.0001 0.00001 0.01 0.1 1 10 0.0001 10 1k 10k 100k FREQUENCY (Hz) OUTPUT VOLTAGE (V) Figure 16. 6 100 Figure 17. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) PSRR- vs Frequency VDD = 1.25V, VSS = -1.25V, VRIPPLE = 200mVP-P Input terminated, BW = 22-80kHz 0 0 -10 -10 -20 -20 -30 -30 -40 -40 PSRR (dB) PSRR (dB) PSRR+ vs Frequency VDD = 1.25V, VSS = -1.25V, VRIPPLE = 200mVP-P Input terminated, BW = 22-80kHz -50 -60 -70 -50 -60 -70 -80 -80 -90 -90 -100 -100 -110 -120 10 -110 -120 10 100 1k 10k 100k 1M 100 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz) Figure 18. Figure 19. PSRR+ vs Frequency VDD = 2.50V, VEE = -2.50V, VRIPPLE = 200mVP-P Input terminated, BW = 22-80kHz PSRR- vs Frequency VDD = 2.50V, VSS = -2.50V, VRIPPLE = 200mVP-P Input terminated, BW = 22-80kHz 0 -10 -20 -20 -30 -30 -40 -40 -50 PSRR (dB) PSRR (dB) 0 -10 -60 -70 -80 -50 -60 -70 -80 -90 -90 -100 -100 -110 -120 10 -110 -120 10 100 1k 10k 100k 1M 100 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz) Figure 20. Figure 21. PSRR+ vs Frequency VDD = 2.75V, VSS = -2.75V, VRIPPLE = 200mVP-P Input terminated, BW = 22-80kHz PSRR- vs Frequency VDD = 2.75V, VSS = -2.75V, VRIPPLE = 200mVP-P Input terminated, BW = 22-80kHz 0 -10 -10 -20 -20 -30 -30 -40 -40 PSRR (dB) PSRR (dB) 0 -50 -60 -70 -50 -60 -70 -80 -80 -90 -90 -100 -100 -110 -120 10 -110 -120 10 100 1k 10k 100k 1M FREQUENCY (Hz) 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 22. Figure 23. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 7 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS (continued) Output Voltage vs Supply Voltage RL = 10k, AV = -1 f = 1kHz, THD+N = 1%, BW = 22-80kHz 2.5 2.5 2.0 2.0 OUTPUT VOLTAGE OUTPUT VOLTAGE Output Voltage vs Supply Voltage RL = 600, AV = -1 f = 1kHz, THD+N = 1%, BW = 22-80kHz 1.5 1.0 1.5 1.0 0.5 0.0 2.5 0.5 3.0 3.5 4.5 4.0 5.0 0.0 2.5 5.5 3.5 4.0 4.5 5.0 5.5 POWER SUPPLY (Vs) Figure 24. Figure 25. Crosstalk vs Frequency VDD = 2.50V, VSS = -2.50V, RL = 10k AV = -1, f = 1kHz, BW = 80kHz CMRR vs Frequency VDD = 2.5V, VSS = -2.5V, VRIPPLE = 200mVP-P 0 0 -10 -10 -20 -20 -30 -30 -40 -40 CMRR (dB) CROSSTALK (dB) 3.0 POWER SUPPLY (Vs) -50 -60 -70 -50 -60 -70 -80 -80 -90 -90 -100 -100 -110 -120 10 -110 -120 10 100 1k 10k 100k 1M FREQUENCY (Hz) 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 26. Figure 27. Input Voltage Noise vs Frequency VDD = 5V 160.0 VOLTAGE NOISE (nV/ Hz) 140.0 120.0 100.0 80.0 60.0 40.0 20.0 0.0 10 100 1000 10000 100000 FREQUENCY (Hz) Figure 28. 8 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 APPLICATION INFORMATION DISTORTION MEASUREMENTS The vanishingly low residual distortion produced by LME49726 is below the capabilities of all commercially available equipment. This makes distortion measurements just slightly more difficult than simply connecting a distortion meter to the amplifier's inputs and outputs. The solution. however, is quite simple: an additional resistor. Adding this resistor extends the resolution of the distortion measurement equipment. The LME49726's low residual is an input referred internal error. As shown in Figure 29, adding the 10 resistor connected between athe amplifier's inverting and non-inverting inputs changes the amplifier's noise gain. The result is that the error signal (distortion) is amplified by a factor of 101. Although the amplifier's closed-loop gain is unaltered, the feedback available to correct distortion errors is reduced by 101. To ensure minimum effects on distortion measurements, keep the value of R1 low as shown in Figure 29. This technique is verified by duplicating the measurements with high closed loop gain and/or making the measurements at high frequencies. Doing so, produces distortion components that are within measurement equipment capabilities. This datasheet's THD+N and IMD values were generated using the above described circuit connected to an Audio Precision System Two Cascade. R2 1k R1 1k R3 10 LME49726 + Generator Output Distortion Signal Gain = 1 + (R2/R3) Analyzer Input Audio Precision System Two Cascade Figure 29. THD+N and IMD Distortion Test Circuit OPERATING RATINGS AND BASIC DESIGN GUIDELINES The LME49726 has a supply voltage range from +2.5V to +5.5V single supply or 1.25 to 2.75V dual supply. Bypassed capacitors for the supplies should be placed as close to the amplifier as possible. This will help minimize any inductance between the power supply and the supply pins. In addition to a 10F capacitor, a 0.1F capacitor is also recommended in CMOS amplifiers. The amplifier's inputs lead lengths should also be as short as possible. If the op amp does not have a bypass capacitor, it may oscillate. BASIC AMPLIFIER CONFIGURATIONS The LME49726 may be operated with either a single supply or dual supplies. Figure 2 shows the typical connection for a single supply inverting amplifier. The output voltage for a single supply amplifier will be centered around the common-mode voltage, VCM. Note, the voltage applied to the VCM insures the output stays above ground. Typically, the VCM should be equal to VDD/2. This is done by putting a resistor divider circuit at this node, see Figure 30. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 9 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com R2 R1 VDD VDD R3 VOUT VCM + R4 Figure 30. Single Supply Inverting Op Amp Figure 31 shows the typical connection for a dual supply inverting amplifier. The output voltage is centered on zero. VIN R1 R2 VDD - VOUT + VSS Figure 31. Dual Supply Inverting Configuration Figure 32 shows the typical connection for the Buffer Amplifier or also called a Voltage Follower. The Buffer is a unity gain stable amplifier. VDD - VOUT VIN + Figure 32. Unity-Gain Buffer Configuration 10 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 Typical Applications AV = 34.5 F = 1 kHz En = 0.38 V A Weighted Figure 33. NAB Preamp AV = 34.5 F = 1 kHz En = 0.38 V A Weighted Figure 34. NAB Preamp Voltage Gain vs Frequency R R - V2 1/2 LME49726 R V0 + V1 R VO = V1-V2 Figure 35. Balanced to Single Ended Converter Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 11 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com R V1 + V2 R 1/2 LME49726 R V0 - R V3 V4 R R VO = V1 + V2 - V3 - V4 Figure 36. Adder/Subtracter Figure 37. Sine Wave Oscillator R1 11k C1 C2 0.01 PF 0.01 PF V1 + 1/2 LME49726 R2 22k V0 - Illustration is f0 = 1 kHz Figure 38. Second Order High Pass Filter (Butterworth) 12 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 C1 0.022 PF R1 10k R2 10k + V1 V0 1/2 LME49726 C2 0.011 PF - Illustration is f0 = 1 kHz Figure 39. Second Order Low Pass Filter (Butterworth) R2 10k RG 10k R2 R1 10k 16k R1 0.01 PF 16k C1 0.01 PF - VHP 1/2 LME49726 VBP 1/2 LME49726 1/2 LME49726 + + VIN C1 R0 R2 556 10k VLP + Illustration is f0 = 1 kHz, Q = 10, ABP = 1 Figure 40. State Variable Filter R5 20k R2 20k C1 10 PF R3 10k R4 20k R1 20k VIN D1 1S1588 1/2 LME49726 + R6 15k 1/2 LME49726 D2 1S1588 V0 = VIN + R7 6.2k Figure 41. AC/DC Converter Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 13 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com R1 15k 3.41R1 51k R1 15k V01 1/2 LME49726 + VI 0.707R1 10k V02 1/2 LME49726 + R1 15k R1 15k 3.41R1 51k Figure 42. 2 Channel Panning Circuit (Pan Pot) R2 R1 V1 - 1/2 LME49726 + VCC R3 10k Q1 R9 10k R7 33 R5 10k BIAS R8 33 V0 Q2 R6 10k -VEE Figure 43. Line Driver 14 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 BOOST-BASS-CUT R1 R2 R1 11k 100k 11k V1 C1 0.05 PF C1 0.05 PF R3 11k C2 0.005 PF R5 3.6k 1/2 LME49726 R5 3.6k V0 + R4 500k BOOST-TREBLE-CUT Illustration is: fL = 32 Hz, fLB = 320 Hz fH =11 kHz, fHB = 1.1 kHz Figure 44. Tone Control Figure 45. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 15 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com Av = 35 dB En = 0.33 V S/N = 90 dB f = 1 kHz A Weighted A Weighted, VIN = 10 mV @f = 1 kHz Figure 46. V1 R R4 10k R3 10k + 1/2 LME49726 R2 V0 1/2 LME49726 10k R1 200 + R5 10k - R6 R7 10k 10k 1/2 LME49726 V2 + R Illustration is: V0 = 101(V2 - V1) Figure 47. Balanced Input Mic Amp 16 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 Figure 48. fo (Hz) C1 C2 R1 R2 32 0.12F 4.7F 75k 500 64 0.056F 3.3F 68k 510 125 0.033F 1.5F 62k 510 250 0.015F 0.82F 68k 470 500 8200pF 0.39F 62k 470 1k 3900pF 0.22F 68k 470 2k 2000pF 0.1F 68k 470 4k 1100pF 0.056F 62k 470 8k 510pF 0.022F 68k 510 16k 330pF 0.012F 51k 510 At volume of change = 12 dB Q = 1. LME49726 Bill of Materials Description Designator Part Number Manufacturer AVX Quantity/Brd Ceramic Capacitor 0.1uF, 10%, 50V 0805 SMD C1, C2, C5-C8 08055C104KAT2A Tantalum Capacitor 2.2uF,10%, 20V, A-size C9, C11 T491A225K020AT Tantalum Capacitor 10uF,10%, 20V, B-size C3, C4 T491B106K020AT Resistor 0, 1/8W 1% 0805 SMD R1, R4, R6, R9, R13, R14 CRCW08050000Z0EA Header, 2-Pin JP1, JP2, JP3, JP4 HDR1X2 Header 2 4 Header, 3-Pin JP5 HDR1X3 Header 3 1 Resistor 10k, 1/8W 1% 0805 SMD R2, R3, R7, R8 CRCW080510K0FKEA Vishay 4 Dual Rail-to-Rail Op Amp U1 LME49726 Texas Instruments 1 Resistor 100meg/open 1/8W 0805 SMD R5, R10, R11, R12 OPEN N/A N/A 0 Kemet Kemet Vishay 2 Not Stuff 2 6 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 17 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com LME49726 Board Circuit 18 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 LME49726 Demo Board Views Figure 49. Top Silkscreen Figure 50. Top Layer Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 19 LME49726 SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 www.ti.com Figure 51. Bottom Layer 20 Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 LME49726 www.ti.com SNAS432C - NOVEMBER 2008 - REVISED APRIL 2013 REVISION HISTORY Rev Date 1.0 11/05/08 Description Initial release. 1.01 05/25/10 Increased Operating Temperature Range. 1.02 07/14/11 Added curves 30038602 and 03 and input text edits. 1.03 07/19/11 Re-released the D/S to the WEB after adding curves 30038602 and 03 . C 04/04/13 Changed layout of National Data Sheet to TI format. Submit Documentation Feedback Copyright (c) 2008-2013, Texas Instruments Incorporated Product Folder Links: LME49726 21 PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (C) Top-Side Markings (3) (4) LME49726MY/NOPB ACTIVE MSOPPowerPAD DGN 8 1000 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 ZA3 LME49726MYX/NOPB ACTIVE MSOPPowerPAD DGN 8 3500 Green (RoHS & no Sb/Br) CU SN Level-1-260C-UNLIM -40 to 85 ZA3 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 1 Samples PACKAGE MATERIALS INFORMATION www.ti.com 4-May-2017 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LME49726MY/NOPB MSOPPower PAD DGN 8 1000 178.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 LME49726MYX/NOPB MSOPPower PAD DGN 8 3500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 4-May-2017 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LME49726MY/NOPB MSOP-PowerPAD DGN 8 1000 210.0 185.0 35.0 LME49726MYX/NOPB MSOP-PowerPAD DGN 8 3500 367.0 367.0 35.0 Pack Materials-Page 2 MECHANICAL DATA DGN0008A MUY08A (Rev A) BOTTOM VIEW www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated (TI) reserves the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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