TDA7231A 1.6W AUDIO AMPLIFIER .. .. . OPERATING VOLTAGE 1.8 TO 15 V LOW QUIESCENT CURRENT HIGH POWER CAPABILITY LOW CROSSOVER DISTORTION SOFT CLIPPING MINIDIP (4+4) ORDERING NUMBER : TDA7231A DESCRIPTION The TDA7231A is a monolithic integrated circuit in 4 + 4 lead minidip package. It is intended for use as class AB power amplifier with wide range of supply voltage in portable radios, cassette recorders and players, etc. PIN CONNECTION March 1995 1/5 TDA7231A ABSOLUTE MAXIMUM RATINGS Symbol Parameter Vs Supply Voltage Ptot Total Power Dissipation at Tamb = 50 °C at Tcase = 70 °C Io Tstg, Tj Value Output Peak Current Storage and Junction Temperature Unit 16 V 1.25 4 W W 1 A – 40 to 150 °C THERMAL DATA Symbol Value Unit R th j-amb Thermal Resistance Junction-ambient Parameter Max. 80 °C/W Rth j-pins Thermal Resistance Junction-pins Max. 15 °C/W ELECTRICAL CHARACTERISTICS (Vs = 6 V, Tamb = 25 °C, unless otherwise specified) Symbol Parameter Vs Supply Voltage Vo Quiescent Out Voltage Id Quiescent Drain Current Ib Input Bias Current Po Output Power Typ. 3.6 d = 10% Vs = 12V Vs = 9V Vs = 6V Vs = 6V Vs = 3V Vs = 3V Max. Unit 15 V 2.7 1.2 VS = 6 V VS = 3 V f = 1kHz RL = 8Ω RL = 4Ω RL = 8Ω RL = 4Ω RL = 4Ω RL = 8Ω Po = 0.2 W f = 1 kHz RL = 8 Ω Distortion Gv Closed Loop Voltage Gain Rin Input Resistance f = 1kHz eN Total Input Noise R s = 10kΩ Supply Voltage Rejection f = 100Hz, Rg = 10kΩ Figure 1 : Test and Application Circuit Min. 1.8 d SVR 2/5 Test Conditions 24 9 mA 100 nA 1.8 1.6 0.4 0.7 110 70 W W W W mW mW 0.3 % 38 dB 2 3 µV µV 33 dB 100 B = Curve A B = 22Hz to 22kHz V V kΩ TDA7231A Figure 2 : P.C. Board and Components Layout of the figure 1 (1:1 scale) Figure 3 : Output Power versus Supply Voltage Figure 4 : Quiescent Current versus Supply Voltage Figure 5 : Quiescent Output Voltage versus Supply Voltage Figure 6 : Supply Voltage Rejection versus Frequency 3/5 TDA7231A MINIDIP PACKAGE MECHANICAL DATA mm DIM. MIN. A TYP. MAX. MIN. 3.3 TYP. MAX. 0.130 a1 0.7 B 1.39 1.65 0.055 0.065 B1 0.91 1.04 0.036 0.041 b b1 0.028 0.5 0.38 0.020 0.5 D 0.015 0.020 9.8 0.386 E 8.8 0.346 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 F 7.1 0.280 I 4.8 0.189 L Z 4/5 inch 3.3 0.44 0.130 1.6 0.017 0.063 TDA7231A Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components inlife support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1995 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 5/5