san jing electronics co.,ltd sj 2822m url:http://www.szsanjing.com --------------- tel : 0755 - 29663136 fax : 0755 - 29663137 --------------- page: 1 / 6 dual power amplifier sj 2822 m general description the SJ2822M is a monolithic integrated circuit in 8 lead minidip package. it is intended for use as dual audio power amplifier in portable cassette tape players and radios. l features l dual low - voltage power amplifier l supply voltage down to 1.8v l low crossover distortion l low quiescent current l bridge or stereo configuration block diagram pinni ng bias circuit + _ + _ 8 7 6 5 1 2 3 4 nf1 in1 in2 nf2 out1 vcc out2 gnd
san jing electronics co.,ltd sj 2822m url:http://www.szsanjing.com --------------- tel : 0755 - 29663136 fax : 0755 - 29663137 --------------- page: 2 / 6 maximum ratings characteristics symbol value unit supply voltage vcc 15 v output peak current ipk 1 a total power dissipation(at tamb=50 c) p d 1 w total power dissipation(at tcase=50 c) p d 1.4 w operating ambient temper ature range ta - 20~70 c storage temperature range tstg - 40~150 c electrical characteristics 1.stereo test circuit( unless otherwise specified vcc=6v,tamb=25 c) characteristic symbol test condition min. typ. max. unit supply voltage vcc 1.8 1 2 v 2.7 v qui escent output voltage vo vcc=3v 1.2 v quiescent drain current id 6 9 ma input bias current i ba 100 na d=10% f=1khz vcc=3v r l =4 |? vcc=3v r l =32 |? 110 20 mw output power (each channel) po d=10% f=1khz vcc=9v r l =8 |? vcc=6v r l =4 |? vcc=4.5v r l =4 |? 0.4 1 0.65 0.32 w distortion thd po=0.5w r l =8 |? f=1khz vcc=9v 0.3 % closed loop voltage gain avf f=1khz 40 db channel balance d avf ? 1 db input resistance ri f=1khz 100 k |? rs=10k |? b=cure a 2 | v total input noise v ni rs=10k |? b=22hz to22khz 3 supply voltage rejection svr f=100hz c1=c2=100 | f 24 30 db channel separation csr f=1khz 50 db
san jing electronics co.,ltd sj 2822m url:http://www.szsanjing.com --------------- tel : 0755 - 29663136 fax : 0755 - 29663137 --------------- page: 3 / 6 2.bridge test circuit (unless otherwise specified vcc=6v,tamb=25 c) characteristic sym - bol test condition min. typ. max. unit supply voltage vcc 1.8 1 2 v quiescent drain current id r l = 6 9 ma output offset voltage (between the outputs) vos r l =8 |? ? 50 mv input bias current ib 100 na d=10% f=1khz vcc=9v r l =16 |? vcc=6v r l =8 |? vcc=4.5v r l =8 |? vcc=4. 5v r l =4 |? 2 1.35 0.7 1 w output power po vcc=3v r l =4 |? vcc=2v r l =4 |? 200 350 80 mw distortion thd po=0.5w r l =8 |? f=1khz 0.2 % closed loop voltage gain avf f=1khz 40 db input resistance ri f=1khz 100 k |? rs=10k |? curve a 2.5 total input noise v ni rs= 10k |? b=22hz to 22khz 3 | v supply voltage rejection svr f=100hz 40 db power bandwidth ( - 3db) b r l =8 |? po=1w 120 khz
san jing electronics co.,ltd sj 2822m url:http://www.szsanjing.com --------------- tel : 0755 - 29663136 fax : 0755 - 29663137 --------------- page: 4 / 6 test circuit 1.stereo test circuit 2.bridge test circuit c1 100uf c4 470uf r1 10k r3 4.7 r c6 0.1uf l in (l) 8 7 1 + _ c2 100uf c5 470uf r2 10k r4 4.7 r c7 0.1uf l in (r) 5 6 3 + _ c3 10uf +vcc 2 4 + - + - r1 10k c1 10uf r2 4.7 c4 0.1uf rl c2 10nf r3 4.7 c5 0.1uf c3 10uf 1 3 2 4 5 7 6 8 in +vcc
san jing electronics co.,ltd sj 2822m url:http://www.szsanjing.com --------------- tel : 0755 - 29663136 fax : 0755 - 29663137 --------------- page: 5 / 6 application circuit 1. typical application in portable players characteristics curves 100uf 100uf 10k 4.7 0.1uf in (l) 8 7 1 + _ 100uf 100uf 10k 4.7 0.1uf in (r) 5 6 3 + _ +3v 2 4 32/16 headphone
san jing electronics co.,ltd sj 2822m url:http://www.szsanjing.com --------------- tel : 0755 - 29663136 fax : 0755 - 29663137 --------------- page: 6 / 6 outline drawing o 1 ? ( di p) 2 ?? sop ?
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