rev 2.0 ?2010 advanced linear devices, inc. 415 tasman drive, sunnyvale, ca 94089-1706 tel: (408) 747-1155 fax: (408) 747-1286 www.aldinc.com dual precision cmos voltage comparator with open drain driver ald2301a/ald2301b ald2301c/ald2301 a dvanced l inear d evices, i nc. general description the ald2301a/ald2301b/ald2301c/ald2301 is a monolithic high performance dual voltage comparator built with advanced silicon gate cmos technology. it features very high typical input impedance of 10 12 ? ; low input bias current of 10pa; fast response time of 300ns; very low power dissipation of 55 a per comparator; and single (+5v) or dual ( 5v) power supply operation. the input voltage range includes ground, making this comparator ideal for low level signal detection with high source impedance. the outputs are open-drain configuration, allowing maximum application flexibility, such as wired-or connection. the outputs can be con- nected to a higher external voltage than v + . the ald2301a/ald2301b/ald2301c/ald2301 is ideal for a great variety of voltage comparator applications, especially low level signal detection circuits requiring low standby power, yet retaining high output current capability as needed. features ? fanout of 30ls ttl loads ? low supply current of 110 a typical ? functional equivalent to lm193 industry standard comparators ? extremely low input bias currents -- typically 10pa ? virtually eliminates source impedance effects ? low operating supply voltage of 3v to 10v ? single (+5v) and dual supply ( 5v) operation ? high speed for both large signal and low level signals -- 300ns typical for ttl inputs ? cmos, nmos and ttl compatible ? wired-or open drain outputs ? high output sinking current -- typically 60ma ? low supply current spikes applications ? high source impedance voltage comparison circuits ? dual limit window comparator ? power supply voltage monitor ? photo-detector sensor circuit ? relay or led driver ? oscillators ? battery operated instruments ? remote signal detection benefits ? low power and high precision combination ? built-in high input impedance buffer ? built-in output driver with up to 60ma sink current block diagram (1) out 1 (7) out 2 (4) gnd v + (8) v + noninverting input +in 1 (3) inverting input noninverting input inverting input -in 1 (2) +in 2 (5) -in 2 (6) operating temperature range * 0 c to +70 c0 c to +70 c -55 c to +125 c 8-pin 8-pin 8-pin small outline plastic dip cerdip package (soic) package package ald2301asal ald2301apal ald2301ada ald2301bsal ald2301bpal ald2301bda ALD2301CSAL ald2301cpal ald2301cda ald2301sal ald2301pal ald2301da ordering information (?l? suffix for lead free version) * contact factory for leaded (non-rohs) or high temperature versions. pin configuration 1 2 3 4 8 7 6 5 out 1 -in 1 +in 1 gnd v + out 2 -in 2 +in 2 sal, pal, da packages
ald2301a/ald2301b/ald2301c/ald2301 advanced linear devices 2 of 7 supply v s 1.5 5 1.5 5 1.5 5 1.5 5 v dual supply voltage v + 3 10 3 10 3 10 3 10 v single supply supply i s 110 180 110 180 110 180 110 180 ar load = current voltage gain a vd 50 150 50 150 50 150 50 150 v/mv r load 15k ? input offset v os 2 5 20 10 mv r load 1.5k ? voltage input offset i os 10 200 10 200 10 400 10 200 pa current 1 input bias i b 10 200 10 200 10 400 10 200 pa current 1 common mode input v icr -0.3 v + -1.5 -0.3 v + -1.5 -0.3 v + -1.5 -0.3 v + -1.5 v voltage range 2 low level v ol 0.15 0.4 0.15 0.4 0.15 0.4 0.15 0.4 v i sink = 12ma output voltage v input = 1v differential low level output i ol 24 60 24 60 24 60 24 60 ma v ol = 1.0 v current high level leakage i oh .01 20 .01 20 .01 20 .01 20 na v oh = 5.0 v current response t rp 650 650 650 650 ns r l = 5.1k ? time 2 c l = 15pf 100mv input step/5mv overdrive 300 300 300 300 ns r l = 5.1k ? c l =15pf ttl - level input step operating electrical characteristics t a = 25 c v + = +5v unless otherwise specified 2301a 2301b 2301c 2301 test parameter symbol min typ max min typ max min typ max min typ max unit conditions notes : 1 consists of junction leakage currents. 2 sample tested parameters. absolute maximum ratings supply voltage, v + 10.6v differential input voltage range -0.3v to v + +0.3v power dissipation 600 mw operating temperature range sal, pal packages 0 c to +70 c da package -55 c to +125 c storage temperature range -65 c to +150 c lead temperature, 10 seconds +260 c
ald2301a/ald2301b/ald2301c/ald2301 advanced linear devices 3 of 7 typical performance characteristics saturation voltage vs. sink current output sink current (ma) 0 1530 456075 1.5 1.2 0.9 0.6 0.3 0.0 output saturation voltage (v) v s = 2.5v -55 c 25 c -25 c 85 c 125 c 0.4 0.0 0.2 0.6 0.8 1.0 1.2 1.4 time ( s ) -2.5 0.0 +2.5 0 100 output voltage (v) input voltage (mv) t a = 25 c v s = 2.5v 2mv 10mv 20mv 50mv 5mv response time for various input overdrives 5.1k 0v v in v+ v- v out + - saturation voltage vs.temperature tem perature ( c) -55 -25 0 25 50 125 100 75 1.4 1.2 1.0 0.8 0.6 0.4 0.2 saturation voltage (v) 0 v s = 2.5v i sink = 50ma transfer function differential input voltage (mv) +6.0 -6.0 0.0 output voltage (v) +2.5 0.0 -2.5 t a = 25 c v s = 6v r l = 5.1k tim e ( s) 0.0 0.2 0.4 0.8 0.6 1.2 1.0 1.4 response time for various input overdrives +2.5 100 0 0.0 -2.5 input voltage (mv) output voltage (v) t a = 25 c v s = 2.5v 50mv 20mv 5mv 10mv 2mv 5.1k 0v v in v+ v- v out + - common - mode voltage referred to supply voltage temperature ( c) 0.5 v+ -0.5 -1.0 0.5 v- -0.5 common - mode voltage limits (v) -55 -25 0 25 50 125 100 75 v s = 2.5v
ald2301a/ald2301b/ald2301c/ald2301 advanced linear devices 4 of 7 typical applications dual limit window comparator led turns on as photo-detector voltage reaches v limit1 . both led and horn turns on as photo-detector voltage reaches v limit2. v external = +12v v+ = +5v. dual limit photo-detector monitor voltage comparator with complementary outputs + + - - 1/2 ald2301 output high for v in < v ref(high) minimum r load = 1.5k ? > and v out v in v + v ref(high) 1/2 ald2301 v ref(low) v ref(low) r load v in - - + + q q v in v ref v + 1/2 ald2301 1/2 ald2301 v+ v limit2 photo- detector light - - + + led buzzer v limit 1 v external 1/2 ald2301 1/2 ald2301 typical performance characteristics (cont'd) 120 100 80 60 140 025 50 75 -25 -55 temperature ( c) supply current ( a) 100 160 180 200 125 v s = 2.5v no load all comparators supply current vs. temperature 2.4 2.2 2.0 1.8 2.6 025 50 75 -25 -55 temperature ( c) offset voltage (mv) 100 2.8 3.0 125 v cm = 0v v s = 2.5v input offset voltage vs. temperature 140 120 100 80 160 6.0 8.0 10.0 12.0 4.0 2.0 supply voltage (v) supply current ( a) t a = 25 c r l = - + v + total supply current vs. total supply voltage
ald2301a/ald2301b/ald2301c/ald2301 advanced linear devices 5 of 7 8 pin plastic soic package soic-8 package drawing millimeters inches min max min max dim a a 1 b c d-8 e e h l s 1.75 0.25 0.45 0.25 5.00 4.05 6.30 0.937 8 0.50 0.053 0.004 0.014 0.007 0.185 0.140 0.224 0.024 0 0.010 0.069 0.010 0.018 0.010 0.196 0.160 0.248 0.037 8 0.020 1.27 bsc 0.050 bsc 1.35 0.10 0.35 0.18 4.69 3.50 5.70 0.60 0 0.25 ? l c h s (45 ) ? e a a 1 b d s (45 ) e
ald2301a/ald2301b/ald2301c/ald2301 advanced linear devices 6 of 7 8 pin plastic dip package pdip-8 package drawing b 1 s b e e 1 d e a 2 a 1 a l c e 1 ? millimeters inches min max min max dim a a 1 a 2 b b 1 c d-8 e e 1 e e 1 l s-8 ? 3.81 0.38 1.27 0.89 0.38 0.20 9.40 5.59 7.62 2.29 7.37 2.79 1.02 0 5.08 1.27 2.03 1.65 0.51 0.30 11.68 7.11 8.26 2.79 7.87 3.81 2.03 15 0.105 0.015 0.050 0.035 0.015 0.008 0.370 0.220 0.300 0.090 0.290 0.110 0.040 0 0.200 0.050 0.080 0.065 0.020 0.012 0.460 0.280 0.325 0.110 0.310 0.150 0.080 15
ald2301a/ald2301b/ald2301c/ald2301 advanced linear devices 7 of 7 8 pin cerdip package cerdip-8 package drawing a a 1 b b 1 c d-8 e e 1 e e 1 l l 1 l 2 s ? 3.55 1.27 0.97 0.36 0.20 -- 5.59 7.73 3.81 3.18 0.38 -- 0 5.08 2.16 1.65 0.58 0.38 10.29 7.87 8.26 5.08 -- 1.78 2.49 15 millimeters inches min max min max dim 0.140 0.050 0.038 0.014 0.008 -- 0.220 0.290 0.150 0.125 0.015 -- 0 0.200 0.085 0.065 0.023 0.015 0.405 0.310 0.325 0.200 -- 0.070 0.098 15 2.54 bsc 7.62 bsc 0.100 bsc 0.300 bsc e e 1 c e 1 ? s b l d b 1 e a l 2 a 1 l 1
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