dual differential comparators lm 2903 description outline drawing the lm2903 consists of two independent voltage com p arators with an offset voltage specification as low as 2.0m v m a x.for tw o com p arators w h ich w e re designed specifically to operation from a single pow er supply over a wide range of voltages. operate from split power supplies is also possible,and the low pow er supply current drain is independent of the m a gnitude of the pow er supply voltage.these com p arators also have a unique characteristic in that the input com m on-m ode voltage range includes ground,even though operated from a single pow er supply v o l t a g e . d i p 8 fea t ure w i d e su pp l y vo l t ag e rang e sing le s u p p ly opera ti on 2v to 36v dual supply operation 1v to 18v v e ry l o w supp l y cu rrent drai n (0 .8 m , a) in d e p e n d en t o f supply voltage(2.0m w /com parator at 5.0 v dc ) low input biasing current 25na low in pu t of f s et c u rrent 5. 0na ; l o w i n p u t of fset vol ta ge 5.0m v input com m on-m ode voltage range includes ground so p8 d i f f erential input voltage range equal to the pow er supply voltage output voltage com p atible with ttl,dtl,ecl,mos and cmos logic system s. b l o c k d i a g r a m p i n c o n f i g u r a t i o n tiger electronic co.,ltd
pin descriptions no description symbol no description symbol 1 output 1 out1 5 +input2 in2 + 2 -input1 in1 - 6 -input2 in2 - 3 +input1 in1 + 7 output 2 out1 4 ground gnd 8 supply voltage vcc absolute maximum ratings characteristics symbol min. max. unit single supply voltage 18 supply voltage dual supplies voltage vcc 36 v differential input voltage v idr 36 v input common-mode voltage v icr -0.3 36 v output short-circuit to ground i og 20 ma input current i in 50 ma maximum junction temperature t j 125 dip8 570 power dissipation sop8 p d 300 mw operating temperature range tamb -20 +85 storage temperature range tstg -65 150 electrical characteristics unless otherwise specified :vcc=5v tamb=25 characteristics test conditions symbo mi typ. max unit 1.0 5.0 input offset voltage 0 ta 70 v io 9.0 mv 5.0 50 input offset current 0 ta 70 i io 150 na 25 250 input bias current 0 ta 70 i ib 400 na 0 vcc-1.5 input common-mode voltage range 0 ta 70 v icr 0 vcc-2.0 v r l = dual comparator 0.4 1.0 supply current r l = dual comparator vcc=30v icc 2.5 ma voltage gain r l 15k ? vcc=15v gv 50 200 v/mv large signal response time v in =ttl logic swing v ref =1.4v v rl =5.0v r l =5.1k ? t res 300 ns response time v rl =5.0v r l =5.1k ? t res 1.3 ns input differential voltage v id vcc v output sink current v in - 1.0v v in + =0v vo 1.5v i sink 6.0 16 ma v in - 1.0v v in + =0v i sink 4.0m a 130 400 output saturation voltage v in - 1.0v v in + =0v i sink 4.0ma 0 ta 70 v sat 700 mv v in + 1.0v v in - =0v vo = 5 . 0 v 0.1 output leakage current v in + 1.0v v in - =0v vo=30v 0 ta 70 i ol 1000 na
applica t ion circuit applied single pow e r supply applied split pow e r supplies
typical characteristics curves:
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