TDA7235 1.6W AUDIO AMPLIFIER OPERATING VOLTAGE 1.8 TO 24V LOW QUIESCENT CURRENT HIGH POWER CAPABILITY LOW CROSSOVER DISTORTION SOFT CLIPPING DESCRIPTION The TDA7235 is a monolithic integrated circuit in 4 +4 lead Minidip package, intended for use as class AB power amplifier with wide range of supply voltage in portable radios, cassette recorders and players, TV sets, etc.. Minidip (4 +4) TEST AND APPLICATION CIRCUIT May 1997 1/5 TDA7235 ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS Supply Voltage IO Output Peak Current Ptot Tstg, Tj Total Power Dissipation Tamb = 50°C T case = 70°C Storage and Junction Temperature Value Unit 28 V 1 A 1.25 4 W W -40 to150 °C PIN CONNECTION (Top view) THERMAL DATA 2/5 Symbol Description Rth j-amb Rth j-case Thermal Resistance Junction-ambient Thermal Resistance Junction-pins max. max. Value Unit 80 15 °C/W °C/W TDA7235 ELECTRICAL CHARACTERISTICS (VS = 12V, Tamb = 25°C, f = 1KHz, unless otherwise specified.) Symbol Parameter VS Supply Voltage VO Quiescent Output Voltage Id Quiescent Drain Current Ib Input Bias Current PO Output Power d Distortion GV Closed Loop Voltage Gain R in Input Resistance eN Total Input Noise SVR Supply Voltage Rejection Test Condition Min. Typ. 1.8 VS = 9V VS = 12V 24 4 5.5 4 d = 10% VS = 9V VS = 12V VS = 15V VS = 20V Max. = 4Ω = 8Ω = 16Ω = 32Ω 1.6 1.8 1.8 1.6 PO = 0.5W R L = 8Ω 0.3 RL RL RL RL 38 100 R S = 10KΩ b = Curve A B = 22Hz to 22KHz f = 100Hz Rg = 10KΩ 24 Unit V V V 10 mA W W W W 1 % dB KΩ 2 3 µV µV 33 dB 3/5 TDA7235 MINIDIP PACKAGE MECHANICAL DATA mm DIM. MIN. A TYP. MAX. MIN. 3.32 TYP. MAX. 0.131 a1 0.51 0.020 B 1.15 1.65 0.045 0.065 b 0.356 0.55 0.014 0.022 b1 0.204 0.304 0.008 0.012 D E 10.92 7.95 9.75 0.430 0.313 0.384 e 2.54 0.100 e3 7.62 0.300 e4 7.62 0.300 F 6.6 0.260 I 5.08 0.200 L Z 4/5 inch 3.18 3.81 1.52 0.125 0.150 0.060 TDA7235 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. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGSTHOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1997 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 5/5