1/10 n wide single supply voltage range or dual supplies for all devices : +2v to +36v or 1v to 18v n very low supply current (1.1ma) independent of supply voltage (1.4mw/comparator at +5v) n low input bias current : 25na typ n low input offset current : 5na typ n input common-mode voltage range includes ground n low output saturation voltage : 250mv typ. (io = 4ma) n differential input voltage range equal to the supply voltage n ttl, dtl, ecl, mos, cmos compatible outputs description this device consists of four independent precision voltage comparators. all these comparators were designed specifically to operate from a single power supply over a wide range of voltages. oper- ation from split power supplies is also possible. these comparators also have a unique character- istic in that the input common-mode voltage range includes ground even though operated from a sin- gle power supply voltage. order code n = dual in line package (dip) d = small outline package (so) - also available in tape & reel (dt) p = thin shrink small outline package (tssop) - only available in tape & reel (pt) pin connections (top view) part number temperature range package ndp lm2901 -40c, +125c n dip14 (plastic package) d so14 (plastic micropackage) p tssop14 (thin shrink small outline package) 4 5 6 7 8 9 10 11 13 1 2 3 14 12 output 2 output 4 output 3 non-inverting input 4 v cc non-inverting input 3 inverting input 4 v cc + output 1 inverting input 1 non-inverting input 2 - inverting input 3 non-inverting input 1 inverting input 2 lm2901 low power quad voltage comparator january 2002
lm2901 2/10 schematic diagram (1/4 lm2901) absolute maximum ratings operating conditions (t amb = 25c) symbol parameter value unit v cc supply voltage 18 to 36 v v id differential input voltage 36 v v i input voltage -0.3 to +36 v output short-circuit to ground 1) p d power dissipation 2) dip14 so14 tssop14 1500 830 710 mw t stg storage temperature range -65 to +150 c t j junction temperature +150 c 1. short-circuit from the output to v cc + can cause excessive heating and eventual destruction. the maximum output current is approximately 20ma, independent of the magnitude of v cc + 2. pd is calculated with t amb = +25c, t j = +150c and r thja = 80c/w for dip14 package = 150c/w for so14 package = 175c/w for tssop14 package symbol parameter value unit v cc supply voltage 2 to 32 1 to 16 v vicm common mode input voltage range 0 to (v cc + - 1.5) v t oper operating free-air temperature range -40 to +125 c
lm2901 3/10 electrical characteristics v cc + = 5v, v cc - = gnd, tamb = 25c (unless otherwise specified) symbol parameter min. typ. max. unit v io input offset voltage 1) t amb = +25c t min t amb t max . 1. at output switch point, vo ? 1.4v, rs = 0 with vcc + from 5v to 30v, and over the full input common-mode range (0v to vcc + C1.5v). 17 15 mv i io input offset current t amb = +25c t min t amb t max. 550 150 na i ib input bias current (i i + or i i - ) 2) t amb = 2.5v 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, indepen dent of the state of the output, so no loading charge exists on the reference of input lines 25 250 400 na a vd large signal voltage gain (v cc = 15v,r l =15k w , v o =1 to 11v) 25 200 v/mv i cc supply current (all comparators)) v cc = +5v, no load v cc = +30v, no load 1.1 1.3 2 2.5 ma v icm input common mode voltage range (v cc = 30v) 3) t amb = +25c t min t amb t max. 3. the input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3v. the uppe r end of the common-mode voltage range is vcc + C1.5v, but either or both inputs can go to +30v without damage. 0 0 v cc + -1.5 v cc + -2 v v id differential input voltage 4) 4. the response time specified is for a 100mv input step with 5mv overdrive. v cc + v v ol low level output voltage v id = -1v, i sink = 4ma t amb = +25c t min t amb t max 250 400 700 mv i oh high level output current (v cc =v o =30v, v id = 1v) t amb = +25c t min t amb t max 0.1 1 na m a i sink output sink current (v id = -1v,v o = 1.5v) 616 m a t re small signal response time 5) (r l = 5.1k w connected to v cc + 5. positive excursions of input voltage may exceed the power supply level. as long as the other voltage remains within the commo n-mode range, the comparator will provide a proper output state. the low input voltage state must not be less than C0.3v (or 0.3v bellow the nega tive power supply, if used) 1.3 m s t rel large signal response time 6) ttl input (v ref = +1.4 v, r l =5.1k w to v cc + ) output signal at 50% of final value output signal at 95 % of final value 6. maximum values are guaranteed by design. 500 1 ns m s
lm2901 4/10 supply current versus supply voltage i nput current versus supply voltage output saturation voltage versus output current response time for various input overdrives - negative transition response time for various input overdrives - positive transition
lm2901 5/10 typical applications basic comparator driving cmos driving ttl low frequency op amp low frequency op amp transducer amplifier
lm2901 6/10 time delay generator low frequency op amp with offset adjust zero crossing detector (single power supply)
lm2901 7/10 two-decade high-frequency vco limit comparator crystal controlled oscillator split-supply applicatins zero crossing detector comparator with a negative reference
lm2901 8/10 package mechanical data 14 pins - plastic dip dimensions millimeters inches min. typ. max. min. typ. max. a1 0.51 0.020 b 1.39 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 2.54 0.050 0.100
lm2901 9/10 package mechanical data 14 pins - plastic micropackage (so) dimensions millimeters inches min. typ. max. min. typ. max. a 1.75 0.069 a1 0.1 0.2 0.004 0.008 a2 1.6 0.063 b 0.35 0.46 0.014 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.020 c1 45 (typ.) d (1) 8.55 8.75 0.336 0.344 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 7.62 0.300 f (1) 3.8 4.0 0.150 0.157 g 4.6 5.3 0.181 0.208 l 0.5 1.27 0.020 0.050 m 0.68 0.027 s 8 (max.) note : (1) d and f do not include mold flash or protrusions - mold flash or protrusions shall not exceed 0.15mm (.066 inc) only for data book. d m f 14 1 7 8 b e3 e e lg c c1 a a2 a1 b1 s
lm2901 10/10 package mechanical data 14 pins -thin shrink small outline package dimensions millimeters inches min. typ. max. min. typ. max. a 1.20 0.05 a1 0.05 0.15 0.01 0.006 a2 0.80 1.00 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.15 c 0.09 0.20 0.003 0.012 d 4.90 5.00 5.10 0.192 0.196 0.20 e 6.40 0.252 e1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 0.025 k 0 8 0 8 l 0.450 0.600 0.750 0.018 0.024 0.030 l1 1.00 0.039 aaa 0.100 0.004 c e1 k l e e b d pin 1 identification 1 7 8 14 seating plane c aaa c 0,25 mm .010 inch gage plane l1 a a2 a1 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states ? http://www.st.com
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