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this is information on a product in full production. november 2012 doc id 022662 rev 2 1/15 15 lm2903w low-power, dual-voltage comparator datasheet ? production data features wide, single supply voltage range or dual supplies +2 v to +36 v or 1 v to 18 v very low supply current (0.4 ma) independent of supply voltage (1 mw/comparator at +5 v) low input bias current: 25 na typ. low input offset current: 5 na typ. input common-mode voltage range includes negative rail low output saturation voltage: 250 mv typ. (i o = 4 ma) differential input voltag e range equal to the supply voltage ttl, dtl, ecl, mos, cmos compatible outputs esd internal protection: 2 kv description this device consists of two independent low- power voltage comparators designed specifically to operate from a single supply over a wide range of voltages. operation from split power supplies is also possible. the input common-mode voltage range includes negative rail even though operated from a single power supply voltage. all pins are protected against electrostatic discharge up to 2 kv. consequently, the input voltages must not exceed the v cc + or v cc - magnitudes. d so-8 (plastic micropackage) pin connections (top view) 1 - output 1 2 - inverting input 1 3 - non-inverting input 1 4 - v cc - 5 - non-inverting input 2 6 - inverting input 2 7 - output 2 8 - v cc + p tssop8 (thin shrink small outline package) www.st.com
contents lm2903w 2/15 doc id 022662 rev 2 contents 1 schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4 3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 typical application sc hematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5.1 so-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.2 tssop8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
lm2903w schematic diagram doc id 022662 rev 2 3/15 1 schematic diagram figure 1. schematic diagram (1/2 lm2903w) !-36 ?! 6## ?! ?! ?! 6## 6## 6## 6## 6## 6## 6## 6o .on inverting input )nverting input
absolute maximum ratings and operating conditions lm2903w 4/15 doc id 022662 rev 2 2 absolute maximum ratings and operating conditions table 1. absolute maximum ratings symbol parameter value unit v cc supply voltage 18 or 36 v v id differential input voltage v cc - -0.3 to v cc + +0.3 v v in input voltage v out output voltage 36 v output short-circuit to ground (1) 1. short-circuits from the output to v cc + can cause excessive heating a nd possible destruction. the maximum output current is approximately 20 ma and is independent of the v cc + magnitude. infinite r thja thermal resistance junction to ambient (2) so-8 tssop8 2. short-circuits can cause excessive heating and destructi ve dissipation. values ar e typical and for a four- layer pcb. 125 120 c/w r thjc thermal resistance junction to case (2) so-8 tssop8 40 37 c/w t j maximum junction temperature +150 c t stg storage temperature range -65 to +150 c esd human body model (hbm) (3) 3. human body model: a 100 pf capacit or is charged to the specified voltage, then discharged through a 1.5 k resistor between two pins of the device. this is done for all couples of connected pin combinations while the other pins are floating. 2000 v machine model (mm) (4) 4. machine model: a 200 pf capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). this is done for all couples of connected pin combinations whil e the other pins are floating. 200 v cdm: charged device model (5) 5. charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. th is is done for all pins. 1500 v table 2. operating conditions symbol parameter value unit v icm common mode input voltage range t min t amb t max 0 to v cc + -1.5 0 to v cc + -2 v t oper operating free-air temper ature range -40 to +125 c
lm2903w electrical characteristics doc id 022662 rev 2 5/15 3 electrical characteristics table 3. v cc + = 5 v, v cc - = gnd, t amb = 25c (unless otherwise specified) symbol parameter test cond itions min. typ. max. unit v io input offset voltage (1) t min t amb t max 17 15 mv i io input offset current t min t amb t max 550 150 na i ib input bias current (2) t min t amb t max 25 250 400 na a vd large signal voltage gain v cc = 15 v, r l = 15 k , v o = 1 to 11 v 25 200 v/mv i cc supply current (all comparators) v cc = 5 v, no load v cc = 30 v, no load 0.4 1 1 2.5 ma v id differential input voltage (3) v cc + v v ol low level output voltage v id = -1 v, i sink = 4 ma t min t amb t max 250 400 700 mv i oh high level output current v cc = v o = 30 v, v id = 1 v t min t amb t max 0.1 1 na a i sink output sink current v id = -1 v, v o = 1.5 v 6 16 ma t res small signal response time (4) r l = 5.1 k to v cc + 1.3 s t rel large signal response time (5) ttl input v ref = +1.4 v, r l = 5.1 k to v cc + output signal at 50 % of final value output signal at 95 % of final value 500 1 ns s 1. at output switch point, v o 1.4 v, r s = 0 with v cc + from 5 v to 30 v, and over the full input common-mode range (0 v to v cc + ?1.5 v). 2. the direction of the input current is from the ic due to the pnp input stage. this curr ent is essentially constant, independent of the state of the output, so no loading charge exists on the reference of input lines. 3. positive excursions of input voltage may exceed the power s upply level. as long as the other voltage remains within the common-mode range, the comparator provi des a proper output state. the low input voltage state must not be less than ?0.3 v (or 0.3 v below the negative power supply, if used). 4. the response time specified is for a 100 mv input step with 5 mv overdrive. 5. maximum values are guaranteed by design and evaluation.
electrical characteristics lm2903w 6/15 doc id 022662 rev 2 figure 2. supply current vs. supply voltage f igure 3. input current vs. supply voltage figure 4. output saturation voltage vs. output current figure 5. response time for various input overdrives - negative transition figure 6. response time for various input overdrives - positive transition
lm2903w typical application schematics doc id 022662 rev 2 7/15 4 typical application schematics figure 7. basic comparator figure 8. driving cmos v cc = 5 v 15 k v o +v (ref) 1/2 lm290 3 -v (ref) 5 v 100 k & 1/ 2 lm290 3 +v (ref) -v (ref) figure 9. driving ttl figure 10. low frequency op-amp 5 v 10 k +v (ref) & & 1/ 2 lm290 3 -v (ref) 5 v 15 k e o 0.5 f 100 k e l 1 k ~ 1/2 lm290 3 a v = 100 figure 11. low frequency op-amp figure 12. transducer amplifier 5 v 15 k 0.5 f 100 k 1 k ~ 2n 2222 (e o = 0 v for e l = 0 v) 1/ 2 lm290 3 e o e l a v = 100 5 v 10 k e o 20 m 3 k m a gnetic pick- u p 10 k 1/ 2 lm290 3
typical application schematics lm2903w 8/15 doc id 022662 rev 2 figure 13. low frequency op- amp with offset adjust figure 14. zero crossing detector (single power supply) e l ~ 2n 2222 5 v e o r1 100 k 1 k 5 v 1 m 100 k 1 m off s et a dj us t r s r 1 15 k 0.5 f r 2 1/ 2 lm290 3 100 k 10 k e l 20 m 5 v 1n414 8 5.1 k 5.1 k 100 k 1/ 2 lm290 3 5.1 k 10 k e i ~ r s 2r s v (ref) high v (ref) low 2n 2222 v cc l a mp 1/ 2 lm290 3 1/2 lm290 3 2r s (12 v) 15 v 5.1 k e o e i ~ 15 v 1/2 lm290 3 figure 17. crystal controlled oscillator figure 18. comparator with a negative reference 2 k 200 k e o v cc 0 100 k 200 k 1/2 lm290 3 0.1 f f = 100 khz v cc = 15 v 15 v 5.1 k e o e i ~ 15 v 5 v 1/2 lm290 3
lm2903w typical application schematics doc id 022662 rev 2 9/15 figure 19. time delay generator figure 20. two-decade high-frequency vco v cc 0 v (ref.) 10 k 1/2 15 k 200 k 3 k 3 k 3 k 10 m v o2 v 0 3 o1 v 51 k v 1 v 2 0.001 f v c1 v 3 v cc v c1 v 1 v 2 v 3 0 0 1 t t 3 t 4 t 2 t t v cc t 0 t 1 v cc v cc v c c =+15v 1/2 lm290 3 1/2 1 / 2 10 k 10 k 10 k 10 k 10 m 10 m 51 k 51 k t 2 t o t 3 t o t a t o inp u t g a ting s ign a l lm290 3 lm290 3 lm290 3 v cc v cc 100 k 3 k 5.1 k /2 v cc /2 0.01 f 500 pf 100 k 0.1 f 20 k 50 k =+ 3 0v +250 mv v control +50 v 700 hz f 100 khz o 20 k 3 k 1/ 2 lm290 3 1/ 2 lm290 3 1/ 2 lm290 3 output 1 output 2 v cc v cc fre qu ency control volt a ge inp u t vcontrol 10 k
package information lm2903w 10/15 doc id 022662 rev 2 5 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark.
lm2903w package information doc id 022662 rev 2 11/15 5.1 so-8 package information figure 21. so-8 package mechanical drawing table 4. so-8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.750.069 a1 0.10 0.25 0.004 0.010 a2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 d 4.80 4.90 5.00 0.189 0.193 0.197 e 5.80 6.00 6.20 0.228 0.236 0.244 e1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 l 0.40 1.27 0.016 0.050 l1 1.04 0.040 k1 81 8 ccc 0.10 0.004
package information lm2903w 12/15 doc id 022662 rev 2 5.2 tssop8 package information figure 22. tssop8 package mechanical drawing table 5. tssop8 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.200.047 a1 0.05 0.15 0.002 0.006 a2 0.80 1.00 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.008 d 2.90 3.00 3.10 0.114 0.118 0.122 e 6.20 6.40 6.60 0.244 0.252 0.260 e1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 0.026 k0 80 8 l 0.45 0.60 0.75 0.018 0.024 0.030 l1 1 0.039 aaa 0.10 0.004
lm2903w ordering information doc id 022662 rev 2 13/15 6 ordering information table 6. order codes order code temperature range package packing marking LM2903WDT -40c to +125c so-8 tape & reel 2903w lm2903wydt (1) 1. qualified and characterized according to aec q100 and q003 or equiva lent, advanced screening according to aec q001 and q 002 or equivalent. so-8 (automotive grade) 2903wy lm2903wpt tssop8 2903w lm2903wypt (1) tssop8 (automotive grade) 903wy
revision history lm2903w 14/15 doc id 022662 rev 2 7 revision history table 7. document revision history date revision changes 18-jan-2012 1 initial release. 05-nov-2012 2 added tssop8 package modified note 2 in table 1: absolute maximum ratings modified note 1 in table 6: order codes
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