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| 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 Vs Ptot Io Tstg, Tj Supply Voltage Total Power Dissipation at Tamb = 50 C at Tcase = 70 C Output Peak Current Storage and Junction Temperature Parameter Value 16 1.25 4 1 - 40 to 150 Unit V W W A C THERMAL DATA Symbol R th j-amb Rth j-pins Parameter Thermal Resistance Junction-ambient Thermal Resistance Junction-pins Max. Max. Value 80 15 Unit C/W C/W ELECTRICAL CHARACTERISTICS (Vs = 6 V, Tamb = 25 C, unless otherwise specified) Symbol Vs Vo Id Ib Po Parameter Supply Voltage Quiescent Out Voltage Quiescent Drain Current Input Bias Current Output Power d = 10% Vs = 12V Vs = 9V Vs = 6V Vs = 6V Vs = 3V Vs = 3V Po = 0.2 W f = 1 kHz RL = 8 f = 1kHz R s = 10k B = Curve A B = 22Hz to 22kHz 24 100 2 3 33 f = 1kHz RL = 8 RL = 4 RL = 8 RL = 4 RL = 4 RL = 8 VS = 6 V VS = 3 V Test Conditions Min. 1.8 2.7 1.2 3.6 100 1.8 1.6 0.4 0.7 110 70 0.3 9 Typ. Max. 15 Unit V V V mA nA W W W W mW mW % d Distortion Gv Rin eN SVR Closed Loop Voltage Gain Input Resistance Total Input Noise Supply Voltage Rejection 38 dB k V V dB f = 100Hz, Rg = 10k Figure 1 : Test and Application Circuit 2/5 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 DIM. MIN. A a1 B B1 b b1 D E e e3 e4 F I L Z 0.44 3.3 1.6 0.017 8.8 2.54 7.62 7.62 7.1 4.8 0.130 0.063 0.38 0.7 1.39 0.91 0.5 0.5 9.8 0.346 0.100 0.300 0.300 0.280 0.189 0.015 1.65 1.04 mm TYP. 3.3 0.028 0.055 0.036 0.020 0.020 0.386 0.065 0.041 MAX. MIN. inch TYP. 0.130 MAX. 4/5 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. (c) 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 |
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