downloaded from elcodis.com electronic components distributor PJ393 dual voltage comparator 1-6 2001/10 ver.a dip-8 sop-8 pin : 1. output 5. input b 2. input a 6. input b 3. input a 7. output b 4. gnd 8. vcc he PJ393 is dual independent precision voltage comparators capable of single- or split-supply operation. specifications as low as 2.0 mv make this device an excellentground level with single-supply operation. input offset-voltage selection for many applications in consumer automotive, and it is designed to permit a common mode range-to- industrial electronics. ? output voltage compatible with dtl, ecl, ttl, mos and cmos logic levels ? low input bias current -25 na ? low input offset current -5.0 na ? low input offset voltage --5.0 mv(max) ? input common mode range to ground level ? differential lnput voltage range equal to power supply voltage ? very low current drain independent of supply voltage - 0.4 ma ? wide single-supply range - 2.0 vdc to 36 vdc ? split-supply range - 1.0 vdc to 18 vdc device operating temperature package PJ393cd dip-8 PJ393cs -20 +85 sop-8 rating symbol value unit power supply voltage v cc +36 or 18 vdc input differential voltage range v idr 36 vdc input common mode voltage range input current (2) (vin -0.3 vdc) v icr i in -0.3 to 36 50 vdc ma output short circuit duration output sink current (1) i sc i sink continuous 20 ma power dissipation@t a =25 plastic dip derate above 25 p d 1/r ja 570 5.7 mw mw/ maximum operating junction temperature PJ393 t j(max) t stg 125 -65 to 150 t ordering information features maximum ratings free datasheet http:///
downloaded from elcodis.com electronic components distributor PJ393 dual voltage comparator 2-6 2001/10 ver.a (v cc = 50vdc, 0 t a 70 unless otherwise stated) PJ393 characteristics symbol min typ max unit input offset voltage (3) t a =25 -20 t a 85 v io -- -- 1.0 -- 5.0 9.0 mv input offset current t a =25 -20 t a 85 i io -- -- 5.0 -- 50 150 na input offset current (4) t a =25 -20 t a 85 i ib -- -- 25 -- 250 400 na input common mode voltage range (4) t a =25 -20 t a 85 v icr 0 0 -- -- v cc -1.5 v cc -2.0 volts voltage gain r l 15k , v cc = 15 vdc. t a =25 a vol 50 200 -- v/mv large signal response time vin = ttl logic swing. vref = 1.4 vdc vrl = 5.0 vdc. rl 5.1 k ? t a =25 -- -- 300 -- ns response time (6) vrl = 5.0 vdc rk = 5.1 k ? t a =25 t tlh -- 1.3 -- s input differentral voltage (7) all vin gnd or v-supply (if used) v id -- -- v cc v output sink current v in- 1.0 vdc v in+ = 0 vdc v o- 15 vdc t a =25 l sink 60 16 -- ma output saturation voltage v in- 1.0 vdc. v in+ = 0 i sink 4.0 ma, t a = 25 -20 t a 85 v ol -- -- 150 -- 400 700 mv output leakage current v in- = 0v, v in+ 1.0vdc vp = 50 vdc. t a =25 v in- = 0v, v in+ 1.0 vdc v o =30 vdc -20 t a 85 i ol -- -- 0.1 -- -- 1000 na supply current r l = t a =25 r l = v cc =30 v l cc -- -- 0.4 -- 1.0 2.5 ma electrical characteristics free datasheet http:///
downloaded from elcodis.com electronic components distributor PJ393 dual voltage comparator 3-6 2001/10 ver.a notes: 1 . the max. output current may be as high as 20 ma, independent of the magnitude of v cc , output short circuits to v cc can cause excessive heating and eventual destruction. 2. this magnitude of input current will only occur if the input leads are driven more negative than guound or the negative supply voltage. this is due to the input pnp collector base junction becoming forward biased acting as an input clamp diode. there is also a lateral pnp parasitic transistor action on the ic chip. this phenomena can cause the output voltage of the comparators to go to the v cc voltage level (or ground if overdrive is large) during the time the input is driven negative.this will not destroy the device and normal output states will recover when the inputs become -0.3 v of ground or negative supply. 3. at output switch point, v o = 1.4 vdc, r s = 0 ? with v cc from 5.0 vdc to 30 vdc, and over the full input common-mode 4. due to the pnp transistor inputs, bias current will flow out of the inputs, this current is essentially constant independent of the output state, therefore, no loading changes will exist on the input lines. 5. input common mode of either input should not be permitted to go more than 0.3 v negative of ground or minus supply. the upper limit of common mode range is v cc - 1.5 v but either or both inputs can betaken to as high as 30 volts without damage. 6. response time is specified with a 100 mv step and 5.0 mv of overdrive. with larger magnitudes of overdrive faster response times are obtainable. 7. the comparator will inhibit proper output state if one of the inputs become greater than v cc, the other input must remain within the common mode range. the low input state must not be less than -0.3 volts of ground of minus supply. figure 1- circuit schematic (diagram shown is for 1 comparator) free datasheet http:///
downloaded from elcodis.com electronic components distributor PJ393 dual voltage comparator 4-6 2001/10 ver.a figure 2 - input bias current versus power supply voltage figure 4 - power supply current versus power supply voltage figure 3 - output saturation voltage versus output sink current applications information this dual comparator feature high gain, wide bandwidth characteristics. this gives the device oscillation tendencies if the outputs are capactively coupled to the inputs via stray capacitance. this oscillation manifests itself during output transitions (v ol to v oh ). to alleviate this situation input resistors <10k ? should be used. the addition of positive feedback (<10 mv) is also recommended. it is good design practice to ground all unused pins. differential input voltages may be larger than supply voltage without damaging the comparator's inputs. voltages more negative than -0.3 v should not be used. figure 5 - zero crossing detector figure 6 - zero crossing detector ( single supply ) ( split supplies ) free datasheet http:///
downloaded from elcodis.com electronic components distributor PJ393 dual voltage comparator 5-6 2001/10 ver.a figure 7 - zero crossing detector figure 8 - time delay generator vcc vo 0 t figure 9 - comparator with hysteresis r s = r1 = r2 (vcc * vref) * r1 vth1 = vref * r1 * r2 * r l (vref * volow) * r1 vth2 = vref * r1 * r2 * r l free datasheet http:///
downloaded from elcodis.com electronic components distributor PJ393 dual voltage comparator 6-6 2001/10 ver.a millimeters inches dim min max min max a 9.07 9.32 0.357 0.367 b 6.22 6.48 0.245 0.255 c 3.18 4.43 0.125 0.135 d 0.35 0.55 0.019 0.020 g 2.54bsc 0.10bsc j 0.29 0.31 0.011 0.012 k 3.25 3.35 0.128 0.132 l 7.75 8.00 0.305 0.315 m - 10 - 10 millimeters inches dim min max min max a 4.80 5.00 0.189 0.196 b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.054 0.068 d 0.35 0.49 0.014 0.019 f 0.40 1.25 0.016 0.049 g 1.27bsc 0.05bsc k 0.10 0.25 0.004 0.009 m 0 7 0 7 p 5.80 6.20 0.229 0.244 r 0.25 0.50 0.010 0.019 free datasheet http:///
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