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comparator s and reference circuit s adcmp350/adcmp354/adcmp356 rev. b information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of pate nts or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062 - 9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ? 2004 C 2011 analog devices, inc. all rights reserved. features comparators with 0.6 v on - chip references output stages open - drain active low ( adcmp350 ) open - drain active high ( adcmp354 ) push - pull active high ( adcmp356 ) high voltage (up to 22 v) tolerance on v in and open - drain output pins low power consumption : 10 a 10 na input bias current 15 mv hysteresis 5 s propagation delay specified over ? 40c to +125c temperature range 4 - lead sc70 package applications voltage detectors microprocessor systems computers battery monitors intelligent instruments portable equipment functional block dia gram a dcmp3 50 gnd out (od) v cc v in ref 051 12-0 01 figure 1 . adcmp350 func tional block diagram adcmp354/adcmp356 gnd out (od/pp) v cc v in ref 051 12-021 figure 2 . adcmp354/adcmp356 functional block diagram general description the adcmp350 / adcmp354 / adcmp356 are comparator and reference circuits suitable for use in general - purpose applications. the high voltage input and output structures allow voltages of up to 22 v on the input of all devices and the output of the o pen - drain devices. high performance over the ?40c to +125c temperature range makes them suitable for use in automotive and other thermally harsh applications, while low power consumption and space - efficient sc70 packaging make them ideal for battery - powe red portable equipment. table 1 . selection table part no. reference voltage (v) input connection output adcmp350 0.6 inverting open - d rain adcmp354 0.6 noninverting open - d rain adcmp356 0.6 noninverting push -p ull
adcmp350/adc mp354/adcmp356 rev. b | page 2 of 12 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 functional block diagram .............................................................. 1 general description ......................................................................... 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 absolute maximum ratings ............................................................ 4 esd caution .................................................................................. 4 pin configuration and function descriptions ..............................5 typical performance characteristics ..............................................6 applications information .................................................................9 adding hysteresis ..........................................................................9 voltage detector ............................................................................9 outline dimensions ....................................................................... 10 ordering guide .......................................................................... 10 revision history 4 /11 rev. a to rev. b deleted adcmp352 .......................................................... universal changes to adding hysteresis section , figure 20, and figure 21 ............................................................................................ 9 11/09 rev. 0 to rev. a changes to ordering guide .......................................................... 10 10/04 revision 0: initial version
adcmp350/adcmp354/adcmp356 rev. b | page 3 of 12 specifications v cc = f ull operating range, t a = ? 40c to +125c, unless otherwise noted. table 2 . parameter min typ max unit test conditions/comments supply v cc operating voltage range 2.25 5.5 v v in operating voltage range 0 22 v supply current 10 15 a v in thres hold rising 0.579 0.6 0.621 v v cc = 3.3 v, t a = ?40c to +85c 0.579 0.6 0.624 v v cc = 3.3 v, t a = ?40c to +125c v in threshold falling 0.564 0.585 0.606 v v cc = 3.3 v, t a = ?40c to +85c 0.564 0.585 0.609 v v cc = 3.3 v, t a = ?40c to +125c input bias current 10 na v in = 0.6 v 170 a v in = 22 v threshold temperature coefficient 30 ppm/c v in to out delay 5 s v in = v th to (v th ? 100 mv) out voltage low 0.4 v v in < v th min imum , i sink = 1.2 ma out voltage high 0.8 v cc v v in > v th max imum , i source = 500 a, push - pull only output rise time 30 ns c out = 15 pf output fall time 45 ns c out = 15 pf output leakage current 1 a out = 22 v, o pen - drain only
adcmp350/adc mp354/adcmp356 rev. b | page 4 of 12 absolute maximum rat ings t a = 25c, unless otherwise noted. table 3 . pa rameter rating v cc ?0.3 v to +6 v v in ?0.3 v to +25 v out ( open - drain) ?0.3 v to +25 v out (push - pull) ?0.3 v to (v cc + 0.3 v) operating temperature range ?40c to +125c storage temperature range ? 65c to +150c ja thermal impedance, sc70 146c/w lead temperature soldering (10 sec) 300c vapor phase (60 sec) 215c infrared (15 sec) 220c stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these o r any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. esd caution
adcmp350/adcmp354/adcmp356 rev. b | page 5 of 12 pin configuration an d fu nction descriptions 4 adcmp350/ adcmp354/ adcmp356 gnd out v cc v in 1 3 2 051 12-002 figure 3 . pin configuration table 4 . pin function descriptions pin no. mnemonic description 1 v in monitors analog input voltage. connected to inverting or noninverting input dependin g on the model number. 2 gnd ground. 3 out digital output. open - drain or push - pull options depending on the model number. 4 v cc power supply.
adcmp350/adc mp354/adcmp356 rev. b | page 6 of 12 typical performance characteristics 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 2.25 2.55 2.85 3.15 3.45 5.55 v cc (v) i cc (a) 05112-003 3.75 4.05 4.35 4.65 4.95 5.25 t a + 125c t a +25c t a ?40c t a + 85c figure 4. i cc vs. v cc over temperature 500 540 560 580 600 620 640 660 680 700 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 temperature (c) v trip (mv) 05112-004 v trip trip rising 520 v trip trip falling figure 5. v in trip threshold vs. temperature (v cc = 3.3 v) 0 4 6 8 10 12 14 16 18 20 ?40 ?25 ?10 5 20 35 50 65 80 95 110 125 temperature (c) hysteresis (mv) 05112-005 2 hysteresis figure 6. v in trip hysteresis vs. temperature 0 4 6 8 10 12 14 16 18 20 0 2 4 6 8 22 v in (v) supply current (a) 05112-006 2 10 12 14 16 18 20 figure 7 . supply current vs. input voltage (v in ) 0 40 60 80 100 120 140 160 180 200 0 2 4 6 8 22 v in (v) in leakage (a) 05112-007 20 10 12 14 16 18 20 t a = +125c t a = +85c t a = +25c t a = ?40c figure 8 . input leakage vs. input voltage (v in ) 05112-019 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 v in (v) v in leakage (a) ta = 25c figure 9. v in leakage current vs. v in voltage (v cc = 3.8 v)
adcmp350/adcmp354/adcmp356 rev. b | page 7 of 12 110 120 140 150 160 170 180 190 200 in leakage (a) 05112-008 130 2.25 2.55 2.85 3.15 3.45 5.55 v cc (v) 3.75 4.05 4.35 4.65 4.95 5.25 t a = +125c t a = +85c t a = ?40c t a = +25c 100 figure 10 . input leakage vs. supply voltage , v cc (v in = 22 v) 520 540 580 600 620 640 660 680 700 v trip (mv) 05112-009 560 2.25 2.55 2.85 3.15 3.45 5.55 v cc (v) 3.75 4.05 4.35 4.65 4.95 5.25 500 v trip rising v trip falling figur e 11 . v in trip threshold vs. v cc 2 4 8 10 12 14 16 18 20 hysteresis (mv) 05112-020 6 2.25 2.55 2.85 3.15 3.45 5.55 v cc (v) 3.75 4.05 4.35 4.65 4.95 5.25 0 hysteresis figure 12 . v in trip hysteresis vs. v cc 0.1 1 10 100 1000 10000 0.01 0.1 10 output sink current (ma) output voltage (mv) 05112-010 1 t a = +125c t a = +85c t a = +25c t a = ?40c figure 13 . output voltage vs. output sink current (i sink = 500 ma) 20 40 80 100 120 output low voltage (mv) 05112-011 60 2.25 2.40 2.70 3.00 3.30 5.50 supply voltage (v) 3.60 3.90 4.20 4.50 4.80 5.20 0 figure 14 . output low voltage vs. supply voltage (i sink = 500 ma) 20 40 80 100 120 140 160 180 200 fall time (ns) 05112-012 60 2.25 2.40 2.70 3.00 3.30 5.50 supply voltage (v) 3.60 3.90 4.20 4.50 4.80 5.20 0 rise time fall time figure 15 . fall time vs. supply voltage
adcmp350/adc mp354/adcmp356 rev. b | page 8 of 12 10 20 40 50 60 70 80 90 100 short-circuit sink current (ma) 05112-013 30 2.25 2.40 2.70 3.00 3.30 5.50 supply voltage (v) 3.60 3.90 4.20 4.50 4.80 5.20 0 figure 16 . short - circuit sink current vs. supply voltage (v cc = 3.3 v , push - pull only) 5 15 20 25 10 80 90 100 110 130 input overdrive (mv) propagation delay (s) 05112-014 0 10 120 70 60 50 40 30 20 t plh t phl figure 17 . propagation delay vs. input overdrive (v cc = 3.3 v , push - pull only) 05112-015 ch1 20mv/div ch2 1.00v/div timebase: 10s/div 1 2 ch1 = vin ch2 = vout figure 18 . propagation delay timing, 10 mv overdrive 05112-016 ch1 100mv/div ch2 1.00v/div timebase: 10s/div 1 2 ch1 = vin ch2 = vout figure 19 . propagation delay timing, 10 0 mv overdrive
adcmp350/adcmp354/adcmp356 rev. b | page 9 of 12 applications information adding hysteresis to prevent oscillations at the output caused by noise or slowly moving signals passing the switching threshold, positive feedback can be used to add hysteresis to the noninverting parts ( adcmp354 and adcmp356 ). for the noninverting configuration shown in figure 20 , two resistors are used to create different switching th resholds, depending on whether the input signal is increasing or decreasing in magnitude. when the input voltage is increasing, the threshold is above v ref , and when it is decreasing, the threshold is below v ref . the upper input threshold level is given by ( ) pullup cc pullup r r2 r1 v r r2 r1 + ? + + = ref in_hi v v where v ref = 0.6 v , assuming r load >> r2 , r pullup the lower input threshold level is given by ( ) r2 r2 r1 v v ref in_lo + = the hysteresis is the difference between these voltage levels and is given by pullup r r2 r1 + = ? cc in v v adcmp354 out v cc = 5v r pullup r load r2 r1 v in v ref = 0.6v 051 12-022 figure 20 . noninverting comparator configuration with added hysteresis voltage detector the adcmp35 0 / adcmp354 / adcmp356 can be used to monitor voltages, such as battery monitoring or threshold detectors. using a resistor divider at the input to select the appropriate trip voltage, the comparator can be configured to give a logic output when the input passes that threshold. figure 21 shows the typical configuration of the adcmp354 for monitoring a supply to indicate that the voltage is above a certain level. adcmp354 out v cc = 5v r pullup r1 r2 v in v ref = 0.6v 051 12-0 23 figure 21 . voltage detector application
adcmp350/adcmp354/adcmp356 rev. b | page 10 of 12 outline dimensions * package outline correspond s in full to eiaj sc82 except for width of pin 2 as shown. 072809-a * 0 . 7 0 0 . 5 0 0 . 1 0 m a x 1 . 0 0 0 . 8 0 1 . 1 0 0 . 8 0 0 . 4 0 0 . 1 0 0 . 1 8 0 . 1 0 0 . 3 0 0 . 1 0 2 1 3 4 0 . 5 0 b s c 0 . 6 5 b s c 2 . 2 0 1 . 8 0 2 . 4 0 1 . 8 0 1 . 3 5 1 . 1 5 coplanarity 0.10 sea ting plane 0 . 3 0 0 . 1 5 figure 22 . 4 - lead thin shrink small outline transistor package [sc70] (ks - 4) dimensions shown in millimeters ordering guide model 1 tempera ture range package description package option branding adcmp350yks - reel7 C 40c to +125c 4 - lead thin shrink small outline transistor package [sc70] ks -4 m0z adcmp350yksz - reel7 C 40c to +125c 4 - lead thin shrink small outline transistor package [sc70] ks -4 m55 adcmp354yks - reel7 C 40c to +125c 4 - lead thin shrink small outline transistor package [sc70] ks -4 m13 adcmp354yksz - reel7 C 40c to +125c 4 - lead thin shrink small outline transistor package [sc70] ks -4 m56 adcmp356yks - reel7 C 40c to +125c 4 - lead t hin shrink small outline transistor package [sc70] ks -4 m15 adcmp356yksz - reel7 C 40c to +125c 4 - lead thin shrink small outline transistor package [sc70] ks -4 m8v 1 z = rohs compliant part.
adcmp350/adcmp354/adcmp356 rev. b | page 11 of 12 notes
adcmp350/adcmp354/adcmp356 rev. b | page 12 of 12 notes ? 2004 C 2011 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d05112 - 0 - 4/11(b)

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