LND339 quadruple differential comparators data sheet general description ? wide supply voltage range (5 to 30v dc or 2.5 to 15v dc ) ? very low supply current drain(0.8ma)- independent of supply voltage ? low input biasing current: (25na) ? low input offset current( 5na) ? offset voltage( 2mv) ? input common-mode voltage range includes gnd ? differential input voltage range equal to the power supply voltage ? output voltage compatible with ttl,dtl ecl mos and cmos logic systems. features the LND339 consists of four independent precision voltage comparators with an offset voltage as low as 2mv max for all four comparators, designed specifically to operate from a single power supply over a wide range of voltages. these comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply 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. application areas include limit comparators, simple analog to digital converters, pulse, squarewave and time delay generators: wide range vco, mos clock timers: multi vibrators and high voltage digital logic gates. the LND339 was designed to directly interface with ttl and cmos. when the LND339 series is operated from both plus and minus power supplies, it will directly interface with mos logic where their low power drain is a distinct advantage over standard comparators. advantages ? high precision comparators ? reduced v os drift over temperature ? power drain suitable for battery operation ? allows sensing near ground ? compatible with all forms of logic ? eliminates need for dual supplies ? linear dimensions, inc. ? 445 east ohio street, chicago il 60611 usa ? tel 312.321.1810 ? fax 312.321.1830 ? www.lineardimensions.com ?
parameter test conditions min typ max unit 25 c 25 v io input offset voltage v cc =5v to 30v v ic =v icr min , v o =1.4v full range* 9 mv 25 c 550 i io input offset current v o =1.4v full range* 150 na 25 c 25 250 i ib input bias current v o =1.4v full range* 400 na 25 c 0 v icr common-mode input voltage range** full range* 0 v cc -1.5 v cc - 2 v a vd large-signal differential voltage amplification v cc = 15v v o =1.4v to 11.4 v, r l 15k ? 25 c 50 200 v/mv v oh = 5v, v id = 1v 25 c 0.1 50 na i oh high-level output current v oh = 30v, v id =1v full range* 1 a 25 c 150 400 mv v ol low-level output voltage i ol =4ma, v id =-1v full range* 700 mv i ol low-level output current v ol= 1.5v,v id =-1v 25 c 616 ma v cc =5v 25 c 0.8 2 ma i cc supply current r l = v cc= 30v full range* 2.5 ma *full range (min to max), for the LND339 is 0 c to 70 c. all characteristics are measured with zero common-mode input voltage unless otherwise specified. **the voltage at either input or common-mode should not be allowed to go negative by more than 0.3v. the upper end of the common-mode voltage range is v cc -1.5v, but either or both inputs can go to 30v without damage. parameter test conditions min typ max unit 100-mv input step with 5-mv overdrive 1.3 response time r l connected to 5v through 5.1 k ? , c l= 15pf*(see note 1) ttl-level input step 0.3 s *c l includes probe and jig capacitance. note 1: the response time specified is the interval between the input step function and the instant when the output crosses 1.4v. electrical characteristics LND339 switching characteristics ? linear dimensions, inc. ? 445 east ohio street, chicago il 60611 usa ? tel 312.321.1810 ? fax 312.321.1830 ? www.lineardimensions.com ?
pin configuration 12 3 4 56 7 8 9 10 11 12 13 14 1 2 3 4 + + + + - - - - output 2 output 1 v+ input 1- input 1+ input 2- input 2+ output 3 output 4 gnd input 4+ input 4- input 3+ input 3- 1 14 2 3 4 11 12 13 output 2 input 1- output 4 6 7 5 10 9 8 output 1 v+ input 1+ input 2- input 2+ input 4+ input 4- input 3+ input 3- gnd output 3 lm139w some typical applications 1/4lnd139 v v+ +v +v in ref + - basic comparator 3.0 k 1/4lnd139 +5.0 v + - dc driving cmos 3 12 100 k 1 2 3 +5.0 v - 1/4lnd139 + dc driving ttl 12 3 10 k 1 2 3 1 2 3 v o v+ +v in ref + - non inverting comparator with hysteresis 1/4lnd139 +v 3.0 k 10k 10m (v+=5.0 vdc) ? linear dimensions, inc. ? 445 east ohio street, chicago il 60611 usa ? tel 312.321.1810 ? fax 312.321.1830 ? www.lineardimensions.com ? LND339 LND339
LND339 v+ - v +v inverting comparator with hysteresis o in + 1/4lnd139 v+ 3.0 k 1m 1m 1m 1/4lnd139 v+ (12 vdc) + - limit comparator - + in +v 1/4lnd139 ref low +v +v ref hi s 2r s 2r r s 10.0 k 1 2 lamp 1 2 1/4lnd139 v o v+ + - v+ squarewave oscillator 0 v+ f 100khz 4.3k 100k 100k 100k 100k 75 pf 1/4 lnd139 v+ + - +15 vdc v o d1 d2 r1 r2 * * for large raios of r1/r2, d1 can be omitted. t0t1 t2 6 s 60 s 0 v+ pulse generator 15k 1m 1m 1m 1m 80 pf 100k ? linear dimensions, inc. ? 445 east ohio street, chicago il 60611 usa ? tel 312.321.1810 ? fax 312.321.1830 ? www.lineardimensions.com ?
LND339 - v+ + 1/4 lnd139 zero detector crossing (single power supply) v in v o 5.1k 10k 20m 5.1k 5.1k 100k 100k split supply applications v+ 1/4 lnd139 v o 3 + - v- 12 zero crossing detector + v in 5.1k 1 2 v o v+ 1/4 lnd139 3 + - v- 12 comparator with a negative reference -5 vdc + v in 5.1k 1 2 ? linear dimensions, inc. ? 445 east ohio street, chicago il 60611 usa ? tel 312.321.1810 ? fax 312.321.1830 ? www.lineardimensions.com ?
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