TDA7231A 1.6w audio amplifier march 1995 pin connection minidip (4+4) ordering number : TDA7231A . operating voltage 1.8 to 15 v . low quiescent current . high power capability . low crossover distortion . soft clipping 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 re- corders and players, etc. 1/5
absolute maximum ratings symbol parameter value unit v s supply voltage 16 v p tot total power dissipation at t amb = 50 c at t case = 70 c 1.25 4 w w i o output peak current 1 a t stg , t j storage and junction temperature C 40 to 150 c thermal data symbol parameter value unit r th j-amb thermal resistance junction-ambient max. 80 c/w r th j-pins thermal resistance junction-pins max. 15 c/w electrical characteristics (v s = 6 v, t amb = 25 c, unless otherwise specified) symbol parameter test conditions min. typ. max. unit v s supply voltage 1.8 15 v v o quiescent out voltage v s = 6 v v s = 3 v 2.7 1.2 v v i d quiescent drain current 3.6 9 ma i b input bias current 100 na p o output power d = 10% f = 1khz v s = 12v r l = 8 w v s = 9v r l = 4 w v s = 6v r l = 8 w v s = 6v r l = 4 w v s = 3v r l = 4 w v s = 3v r l = 8 w 1.8 1.6 0.4 0.7 110 70 w w w w mw mw d distortion p o = 0.2 w f = 1 khz r l = 8 w 0.3 % g v closed loop voltage gain 38 db r in input resistance f = 1khz 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 figure 1 : test and application circuit TDA7231A 2/5
figure 2 : p.c. board and components layout of the figure 1 (1:1 scale) figure 3 : output power versus supply voltage figure 5 : quiescent output voltage versus supply voltage figure 4 : quiescent current versus supply voltage figure 6 : supply voltage rejection versus frequency TDA7231A 3/5
minidip package mechanical data dim. mm inch min. typ. max. min. typ. max. a 3.3 0.130 a1 0.7 0.028 b 1.39 1.65 0.055 0.065 b1 0.91 1.04 0.036 0.041 b 0.5 0.020 b1 0.38 0.5 0.015 0.020 d 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 3.3 0.130 z 0.44 1.6 0.017 0.063 TDA7231A 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 pat ents or other rights of t hird 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. specif ications 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 in life support devices or sys tems 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 - sing a- pore - spain - sweden - switzerland - taiwan - thaliand - united kingdom - u.s.a. TDA7231A 5/5
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