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 sup- ply voltage in portable radios, cassette recorders and players, tv sets, etc.. may 1997 test and application circuit minidip (4 +4) 1/5
absolute maximum ratings symbol parameter value unit v s supply voltage 28 v i o output peak current 1 a p tot total power dissipation t amb = 50 c t case = 70 c 1.25 4 w w t stg , t j storage and junction temperature -40 to150 c thermal data symbol description value unit r th j-amb r th j-case thermal resistance junction-ambient max. thermal resistance junction-pins max. 80 15 c/w c/w pin connection (top view) TDA7235 2/5
electrical characteristics (v s = 12v, t amb = 25 c, f = 1khz, unless otherwise specified.) symbol parameter test condition min. typ. max. unit v s supply voltage 1.8 24 v v o quiescent output voltage v s = 9v v s = 12v 4 5.5 v v i d quiescent drain current 4 10 ma i b input bias current p o output power d = 10% v s = 9v r l = 4 w v s = 12v r l = 8 w v s = 15v r l = 16 w v s = 20v r l = 32 w 1.6 1.8 1.8 1.6 w w w w d distortion p o = 0.5w r l = 8 w 0.3 1 % g v closed loop voltage gain 38 db r in input resistance 100 k w e n total input noise r s = 10k w b = curve a b = 22hz to 22khz 2 3 m v m v svr supply voltage rejection f = 100hz r g = 10k w 24 33 db TDA7235 3/5
minidip package mechanical data dim. mm inch min. typ. max. min. typ. max. a 3.32 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 10.92 0.430 e 7.95 9.75 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 3.18 3.81 0.125 0.150 z 1.52 0.060 TDA7235 4/5
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 f rom 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 s upplied. sgs- thomson 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 C printed in italy C all rights reserved sgs-thomson microelectronics group of companies australia - brazil - canada - china - france - germany - hong kong - italy - japan - korea - malaysia - malta - morocco - the n etherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. TDA7235 5/5
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