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february 2012 doc id 2468 rev 7 1/17 17 LM2901 low-power quad voltage comparator features wide single supply voltage range or dual supplies for all devices: +2 v to +36 v or 1 v to 18 v very low supply current (1.1 ma) independent of supply voltage (1.4 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 description this device consists of four independent precision voltage comparators, which are designed specifically to operate from a single supply over a wide range of voltages. operation from split power supplies is also possible. these comparators also have a unique characteristic in that the input common-mode voltage range includes the negative rail even though operated from a single power supply voltage. n dip14 (plastic package) d so-14 (plastic micropackage) p tssop14 (thin shrink small outline package) q4 qfn16 3x3 (plastic micropackage) www.st.com
pin connection and schematic diagram LM2901 2/17 doc id 2468 rev 7 1 pin connection and schematic diagram figure 1. pin connections (top view) figure 2. schematic diagram 4 5 6 7 8 9 10 11 13 1 2 3 14 12 o u tp u t 2 o u tp u t 4 o u tp u t 3 non-inverting inp u t 4 v cc - non-inverting inp u t 3 inverting inp u t 4 v cc + o u tp u t 1 inverting inp u t 1 non-inverting inp u t 2 inverting inp u t 3 non-inverting inp u t 1 inverting inp u t 2 non-inverting inp u t inverting inp u t 3 .5 a v cc v o 3 .5 a 100 a 100 a v cc
LM2901 absolute maximum rati ngs and operating conditions doc id 2468 rev 7 3/17 2 absolute maximum ratings and operating conditions table 1. absolute maximum ratings symbol parameter value unit v cc supply voltage 18 to 36 v v id differential input voltage 36 v v in input voltage -0.3 to +36 v output short-circuit to ground (1) 1. short-circuits from the output to v cc + can cause excessive heating a nd eventual destruction. the maximum output current is approximately 20 ma, independent of the magnitude of v cc + . r thja thermal resistance junction to ambient (2) dip14 so-14 tssop14 qfn16 3x3 2. short-circuits can caus e excessive heating. destructive dissipa tion can result from simultaneous short- circuits on all amplifiers . all values are typical. 80 105 100 45 c/w r thjc thermal resistance junction to case (2) dip14 so-14 tssop14 qfn16 3x3 33 31 32 14 t j maximum junction temperature +150 c t stg storage temperature range -65 to +150 c esd hbm: human body model (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. 500 v mm: machine model (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. 100 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 cc supply voltage 2 to 32 1 to 16 v 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
electrical characteristics LM2901 4/17 doc id 2468 rev 7 3 electrical characteristics table 3. electrical characteristics at v cc + = 5 v, v cc - = gnd, t amb = 25 c (unless otherwise specified) symbol parameter min. typ. max. unit v io input offset voltage (1) t min t amb t max 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). 17 15 mv i io input offset current t min t amb t max 550 150 na i ib input bias current (i i + or i i - ) (2) t min t amb t max 2. the direction of the input current is out of the ic due to the pnp input stage. this current is essentially constant, independent of the state of the output, so t here is no loading charge on the reference of input lines. 25 250 400 na a vd large signal voltage gain (v cc = 15 v, r l =15k , 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 1.1 1.3 2 2.5 ma v id differential input voltage (3) 3. the response time specified is for a 100 mv input step with 5 mv overdrive. v cc + v v ol low level output voltage v id = -1v, 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 connected to v cc + ) 4. positive excursions of input voltage may exceed t he power supply level. as long as the other voltage remains within the common-mode range, the comparator will provide 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). 1.3 s t rel large signal response time (5) ttl input (v ref = +1.4 v, r l =5.1k to v cc + ) output signal at 50% of final value output signal at 95% of final value 5. maximum values are guaranteed by design. 500 1 ns s
LM2901 electrical characteristics doc id 2468 rev 7 5/17 figure 3. supply current vs. supply voltage figure 4. input current vs. supply voltage figure 5. output saturation voltage vs. output current figure 6. response time for various input overdrives - negative transition figure 7. response time for various input overdrives - positive transition
typical application schematics LM2901 6/17 doc id 2468 rev 7 4 typical application schematics figure 8. basic comparator figure 9. driving cmos v cc = 5 v 15 k v o +v (ref) 1/4 LM2901 -v (ref) 5 v 100 k & 1/ 4 LM2901 +v (ref) -v (ref) figure 10. driving ttl figure 11. low frequency op-amp 5 v 10 k +v (ref) & & 1/ 4 LM2901 -v (ref) 5 v 15 k e o 0.5 f 100 k e l 1 k ~ 1/4 LM2901 a v = 100 figure 12. low frequency op-amp with boost figure 13. 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/ 4 LM2901 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/ 4 LM2901
LM2901 typical application schematics doc id 2468 rev 7 7/17 figure 14. low frequency op-amp with offset adjust figure 15. 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/ 4 LM2901 100 k 10 k e l 20 m 5 v 1n414 8 5.1 k 5.1 k 100 k 1/ 4 LM2901 5.1 k figure 16. limit comparator figure 17. split-supply applications - zero crossing detector 10 k e i ~ r s 2r s v (ref) high v (ref) low 2n 2222 v cc l a mp 1/ 4 LM2901 1/ 4 lm1 3 9 2r s (12 v) 15 v 5.1 k e o e i ~ 15 v 1/4 LM2901 figure 18. crystal controlled oscillator figure 19. comparator with a negative reference 2 k 200 k e o v cc 0 100 k 200 k 1/ 4 LM2901 0.1 f f = 100 khz v cc = 15 v 15 v 5.1 k e o e i ~ 15 v 5 v 1/ 4 LM2901
typical application schematics LM2901 8/17 doc id 2468 rev 7 figure 20. time delay generator figure 21. two-decade high-frequency vco v cc 0 v (ref.) 10 k 1/4 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 1/4 LM2901 1/4 1 / 4 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 LM2901 LM2901 LM2901 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/ 4 LM2901 1/ 4 LM2901 1/ 4 LM2901 output 1 output 2 v cc v cc fre qu ency control volt a ge inp u t vcontrol 10 k
LM2901 package information doc id 2468 rev 7 9/17 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.
package information LM2901 10/17 doc id 2468 rev 7 5.1 dip14 package information figure 22. dip14 package mechanical drawing table 4. dip14 package mechanical data dimensions ref. millimeters inches min. typ. max. min. typ. max. a5.330.21 a1 0.38 0.015 a2 2.92 3.30 4.95 0.11 0.13 0.19 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.04 0.06 0.07 c 0.20 0.25 0.36 0.007 0.009 0.01 d 18.67 19.05 19.69 0.73 0.75 0.77 e 7.62 7.87 8.26 0.30 0.31 0.32 e1 6.10 6.35 7.11 0.24 0.25 0.28 e2.54 0.10 e1 15.24 0.60 ea 7.62 0.30 eb 10.92 0.43 l 2.92 3.30 3.81 0.11 0.13 0.15
LM2901 package information doc id 2468 rev 7 11/17 5.2 qfn16 3 x 3 package information figure 23. qfn16 3 x 3 mm package mechanical drawing
package information LM2901 12/17 doc id 2468 rev 7 figure 24. qfn16 3 x 3 mm footprint recommendation table 5. qfn16 3 x 3 mm package mechanical data (pitch 0.5 mm) ref. dimensions millimeters inches min. typ. max. min. typ. max. a 0.80 0.90 1.00 0.031 0.035 0.039 a1 0 0.05 0 0.002 a3 0.20 0.008 b 0.18 0.30 0.007 0.012 d 2.90 3.00 3.10 0.114 0.118 0.122 d2 1.50 1.80 0.059 0.071 e 2.90 3.00 3.10 0.114 0.118 0.122 e2 1.50 1.80 0.059 0.071 e 0.50 0.020 l 0.30 0.50 0.012 0.020
LM2901 package information doc id 2468 rev 7 13/17 5.3 so-14 package information figure 25. so-14 package mechanical drawing table 6. so-14 package mechanical data dimensions ref. millimeters inches min. typ. max. min. typ. max. a 1.35 1.75 0.05 0.068 a1 0.10 0.25 0.004 0.009 a2 1.10 1.65 0.04 0.06 b 0.33 0.51 0.01 0.02 c 0.19 0.25 0.007 0.009 d 8.55 8.75 0.33 0.34 e 3.80 4.0 0.15 0.15 e1.27 0.05 h 5.80 6.20 0.22 0.24 h 0.25 0.50 0.009 0.02 l 0.40 1.27 0.015 0.05 k 8 (max.) ddd 0.10 0.004
package information LM2901 14/17 doc id 2468 rev 7 5.4 tssop14 package information figure 26. tssop14 package mechanical drawing table 7. tssop14 package mechanical data ref. dimensions millimeters inches min. typ. max. min. typ. max. a1.200.047 a1 0.05 0.15 0.002 0.004 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 0.0089 d 4.90 5.00 5.10 0.193 0.197 0.201 e 6.20 6.40 6.60 0.244 0.252 0.260 e1 4.30 4.40 4.50 0.169 0.173 0.176 e 0.65 0.0256 l 0.45 0.60 0.75 0.018 0.024 0.030 l1 1.00 0.039 k0 80 8 aaa 0.10 0.004
LM2901 ordering information doc id 2468 rev 7 15/17 6 ordering information table 8. order codes order code temperature range package packing marking LM2901n -40c to +125c dip14 tube LM2901n LM2901d LM2901dt so-14 tube or tape & reel 2901 LM2901pt tssop14 tape & reel LM2901q4t qfn16 3x3 tape & reel k5i LM2901ydt (1) 1. qualified and characterized according to aec q100 and q003 or equiva lent, advanced screening according to aec q001 & q 002 or equivalent. so-14 (automotive grade) tape & reel 2901y LM2901ypt (1) tssop14 (automotive grade) tape & reel
revision history LM2901 16/17 doc id 2468 rev 7 7 revision history table 9. document revision history date revision changes 01-jan-2002 1 initial release. 01-jul-2005 2 1 - ppap references inserted in the datasheet see table : order codes on page 1 . 2 - esd protection inserted in table 1 on page 3 . 01-oct-2005 3 the following changes were made in this revision: ? ppap part number added in table order codes on page 1 . ? formatting changes throughout. 18-jul-2006 4 esd hbm value corrected in table 1 on page 3 . 19-dec-2007 5 added r thja and r thjc parameters to table 1: absolute maximum ratings . added footnotes for esd parameters. removed v icm parameter from electrical characteristics in ta bl e 3 . reformatted package information in section 5 . added footnotes for automotive grade parts in table 8: order codes . 30-apr-2009 6 document reformatted. updated package information in chapter 5: package information . removed note 2 under table 8: order codes . 06-feb-2012 7 added qfn16 3 x 3 package in chapter 5 . removed LM2901yd order code from ta b l e 8 .
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