leshan radio company, ltd. 1/6 LR339 low power low offset voltage quad comparators the LR339 consists of four independent precision voltage comparators.these were designed specifically to operate from a signal power supply over a wide range of voltage.operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage.the LR339 also have a unique characteristic in that the input common-mode voltage range includes ground,even though operated from a single power supply voltage. description: feature: z low input biasing current: 25na(typ.) z low input offset current: r 5.0na(typ.) z low output saturation voltage: 130mv z output voltage compatible with ttl,cmos device package LR339 dip-14 LR339d sop-14 ordering information v cc + input ? input output gnd note: diagram shown is for 1 comparator. pin configuration (top view) block diagram dip-14 sop-14 3 2 1 1 2 3 4 5 6 7 14 8 9 10 11 12 13 output 2 ? input 1 output 1 output 3 output 4 + input 1 ? input 2 + input 2 + input 4 ? input 4 + input 3 ? input 3 v cc gnd 4
leshan radio company, ltd. 2/6 pin descriptions no description symbol no description symbol 1 output 2 out2 8 -input3 in3 ? - ? 2 output 1 out1 9 +input3 in3 ? + ? 3 supply voltage vcc 10 -input4 in4 ? - ? 4 -input1 in1 ? - ? 11 +input4 in4 ? + ? 5 +input1 in1 ? + ? 12 ground gnd 6 -input2 in2 ? - ? 13 output 4 out4 7 +input2 in2 ? + ? 14 output 3 out3 absolute maximum ratings characteristics symbol value unit supply voltage vcc 36 or r 18 v differential input voltage v idr 36 v input voltage v icmr -0.3~vcc v input current i sc 50 power dissipation ? * ? p d 1.0 w operating temperature range tamb 0~75 storage temperature range tstg -65~150 note ? * ? ? power dissipation reduces 8 mw/ c for using above ta=25 c ? electrical characteristics ? unless otherwise specified :vcc=5v tamb=25 ? characteristics test conditions symbol mi typ. max unit r 2.0 r 5.0 input offset voltage 0 d ta d 70 v io r 9.0 mv r 5.0 r 50 input offset current 0 d ta d 70 i io r 150 na 25 250 input bias current 0 d ta d 70 i ib 400 na 0 vcc-1.5 input common-mode voltage range 0 d ta d 70 v icr 0 vcc-2.0 v r l = f 0.8 2.0 supply current r l = f vcc=30v icc 1.0 2.5 ma voltage gain r l t 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 =5.1 k : 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 ? - ? t 1.0v v in ? + ? =0v vo d 1.5v i sink 6.0 16 ma v in ? - ? t 1.0v v in ? + ? =0v i sink d 4.0m a 130 400 output saturation voltage v in ? - ? t 1.0v v in ? + ? =0v i sink d v sat 700 mv v in ? + ? t 1.0v v in ? - ? =0v vo=5.0v 0.1 output leakage current v in ? + ? t 1.0v v in ? - ? =0v vo=30v 0 d ta d 70 i ol 1000 na LR339
leshan radio company, ltd. 3/6 figure 1. inverting comparator with hysteresis figure 2. noninverting comparator with hysteresis v ref = v cc r1 r ref + r1 r2 r1 / / r ref amount of hysteresis v h v h = r2 r2 + r3 [(v o(max) ? v o(min) ] v ref v cc r1 r ref + r1 r3 r1 / / r ref / / r2 v h = r1 / / r ref r1/ / r ref + r2 [v o(max) ? v o(min) ] r2 rref / / r1 + v cc vi n v ref + v cc + v cc v in v ref r ref r ref ? + ? + v o v o 10k r1 r2 r3 10 k 1.0 m r3 r2 1.0 m 10 k r1 10 k 10 k figure 3. driving logic figure 4. squarewave oscillator logic device v cc (v) r l k cmos ttl 1/4 mc14001 1/4 mc7400 +15 +5.0 100 10 r s = source resistance r1 r s t1 = t2 = 0.69 rc f 7.2 c( f) r2 = r3 = r4 r1 r2 // r3 // r4 ? + + ? v cc v in v ref v cc 4.0 v v cc + c 330 k r4 330 k r3 r1 100 k 10 k r1 t1 t2 v cc v o r s r l r2 330 k 10 figure 5. zero crossing detector (single supply) figure 6. zero crossing detector (split supplies) v in(min) 0.4 v peak for 1% phase distortion ( ). d1 prevents input from going negative by more than 0.6 v. r1 + r2 = r3 r3 r5 for small error in zero crossing v in 10 k d1 r1 8.2 k 6.8 k r2 15 k r3 +15 v v cc 10 k v in v ee v in v in(min) v cc v o v ee 10 m r5 220 k r4 220 k v o v o + application circuit LR339
leshan radio company, ltd. 4/6 figure 7 . normalized input offset voltage figure 8 . input bias current figure 9 . output sink current versus output saturation voltage t ypical characteristics curves (v cc = 15 vdc, t a = +25 c (each comparator) unless otherwise noted.) t a , ambient temperature ( c) v cc , power supply voltage (vdc) normalized offset voltage v sat , output saturation voltage (mv) i , output current (ma) o 1.40 1.20 1.00 0.80 0.60 ?50 ?25 0 25 50 75 100 125 48 42 36 30 24 18 12 6.0 0 0 4.0 8.0 12 16 20 24 28 32 t a = ?55 c t a = +25 c t a = +125 c i input bias current (na) ib, 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 100 200 300 400 500 t a = +25 c t a = ?55 c t a = +125 c 0 LR339
leshan radio company, ltd. 5/6 dip-14 mechanical dimensions e f f f f 0 $ ; e f e e 5 f f f 0 , 1 0 , 1 e ? h f unit: mm LR339
leshan radio company, ltd. 6/6 mechanical dimensions (continued) so p -14 f f e e f p l q e f e 5 5 $ f h e f e $ e f e e f e e ' h s w k ? f f unit: mm LR339
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