TA8217P TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8217P Dual Audio Power Amplifier TA8217P is dual audio power amplifier designed for the audio power amplifier of portable radio cassette tape recorder. Features * High output power: Pout = 2.5W (typ.) * Soft clip (VCC = 9V, RL = 4, f = 1kHz, THD = 10%) * Built-in thermal shutdown protection circuit * Wide operating supply voltage range : VCC = 4.5~12V (Ta = 25C) Weight: 1.4g (typ.) Block Diagram 1 2002-10-30 TA8217P Precautions For Use And Application (1) Input stage The input stage of power amplifier is comprised of a PNP differential pair preceded by a PNP emitter follower which allows DC referencing of the source signal to ground. This eliminates the need for an input coupling capacitor. However, in case the brush noise of volume becomes a problem, provide serially a coupling capacitor to the input side. (2) Adjustment of voltage gain The voltage gain is fixed at Gv56.5dB by the resistors (R1 and R2) in IC, however, its reduction is possible through adding Rf as shown in Fig.1. In this case, the voltage gain is obtained by the following equation. R + R + Rf Gv20og 1 2 R1 + R f It is recommeded to use this IC with the voltage gain of Gv = 40dB or over. (3) Measures against oscillation For the capacitors C6 and C7 to be applied for preventing the oscillation between output terminal and GND, use the polyester film capacitor having superior quality in high frequency and temperature characteristics, however, since the characteristics of the capacitor may be different depending on the manufactures or kinds, apply the capacitor after confirmation. Since the characteristics of the capacitor of the ceramic type are liable to be affected by the temperature and the voltage, use the capacitor of larger capacity and be sure to perform the thermal test to check the oscillation allowance. 2 2002-10-30 TA8217P Maximum Ratings (Ta = 25C) Characteristic Symbol Rating Unit VCC 20 V PD (Note1) 4.0 W IO 2.5 A Operating temperature Topr -20~75 C Storage temperature Tstg -55~150 C Supply voltage Power dissipation (package limitation) Output current (Note 1) Value for mounting on PC board (refer to PD-Ta curve) Electrical Characteristics (unless otherwise specified, VCC = 9V, RL = 4, Rg = 600, f = 1kHz, Ta = 25C) Characteristic Symbol Test Circuit ICCQ Quiescent current Pout (1) Output power Pout (2) Pout (3) Total harmonic distortion THD Gv (1) Test Condition Min. Typ. Max. Unit Vin = 0 23 55 mA THD = 10% 2.0 2.5 THD = 10%, RL = 3 2.9 THD = 10%, VCC = 6V 1.0 Pout = 0.4W, Gv = 45dB 0.2 1.2 Rf = 82, Vout = 0.775Vrms (0dBm) 43 45 47 Gv (2) % dB Voltage gain W Rf = 0, Vout = 0.775Vrms (0dBm) 56 Cross talk C.T. Rg = 600, Vout = 0.775Vrms (0dBm) -60 dB Ripple rejection ratio R.R. Rg = 600, Vripple = 0.245Vrms (-10dBm) fripple = 100Hz -52 -45 dB Output noise voltage VNO Rg = 10, GV = 45dB BW = 20~20kHz 0.35 1.0 mVrms RIN V5,V8 Input resistance Input offset voltage Vin = 0 30 k 20 mV Typ. DC Voltage Of Each Terminal (VCC = 9V, Ta = 25C by test circuit) Terminal no. 1 2 3 4 5 6 7 8 9 10 11 12 DC voltage (V) 8.1 4.5 8.8 0.6 0.02 8.9 0 0.02 0.6 8.8 4.5 9.0 3 2002-10-30 TA8217P Test Circuit (*) CX is a ripple filter capacitor for transition duration when supply voltage and pin(1) voltage are inverted. (**) For C6 and C7, it is advised to use polyester film capacitor having superior quality in the characteristics of high frequency and temperature. 4 2002-10-30 TA8217P 5 2002-10-30 TA8217P 6 2002-10-30 TA8217P 7 2002-10-30 TA8217P Heat Sink Recommended PCB Layout PCB: Epoxy glass 80mm x 60mm x 1.2mm 8 2002-10-30 TA8217P Package Dimensions Weight : 1.4g (typ.) 9 2002-10-30 TA8217P RESTRICTIONS ON PRODUCT USE 000707EBA * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc.. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice. 10 2002-10-30