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 quad precision micropower cmos voltage comparator with driver ald4303a/ald4303 a dvanced l inear d evices, i nc. applications ? sensor detection circuits ? pcmcia instruments ? mosfet driver ? high source impedance voltage comparison circuits ? multiple limit window comparator ? power supply voltage monitor ? photodetector sensor circuit ? high speed led driver ? oscillators ? battery operated instruments ? remote signal detection ? multiple relay drivers features ? 3v, 5v and 10v supply ? guaranteed to drive 200 ? loads ? fanout of 30ls ttl loads ? guaranteed maximum supply current of 22 a per comparator ? industry standard pinout of lm393 type ? extremely low input bias currents -- typically 10pa ? virtually eliminates source impedance effects ? single (+5v) and dual supply ( 5v) operation ? cmos, nmos and ttl compatible ? open drain wired-or outputs ? compatible with push-pull outputs ? high output sinking current -- typically 60ma ? low supply current spikes ? high gain -- 100v/mv general description the ald4303a/ald4303 is a precision monolithic high performance quad voltage comparator with open drain output built with advanced silicon gate cmos technology. it features very high typical input impedance of 10 12 ? ; low input bias current of 10pa; very low power dissipation of 7.5 a per comparator; micropower operation; high output drive and single (+5v) or dual ( 5v) power supply operation. the input voltage range includes ground, making this comparator ideal for single supply low level signal detection with high source impedance. the ald4303a/ald4303 can be used in connection with other voltage comparator circuits such as the ald2301, ald2302, and ald4302 voltage comparators. the outputs can be connected to a higher external voltage than v + and used in a wired-or connection with other open drain circuits such as the ald2301 and ald2303. they can also be used with push-pull output types such as the ald2302 and ald4302 voltage comparators simultaneously with open drain comparators using a common v+. the ald4303a/ald4303 is ideal for a great variety of voltage comparator applications, espe- cially micropower detection circuits requiring very low input currents, high output currents and low standby power. operating temperature range * 0 c to +70 c0 c to +70 c -55 c to +125 c 14-pin 14-pin 14-pin small outline plastic dip cerdip package (soic) package package ald4303asbl ALD4303APBL ald4303adb ald4303sbl ald4303pbl ald4303db * contact factory for leaded (non-rohs) or high temperature versions. ordering information (?l? suffix for lead free version) block diagram v + (3) inverting input - in 1 (4) noninverting input + in 1 (5) noninverting input + in 2 (7) inverting input - in 2 (6) noninverting input + in 3 (9) inverting input - in 3 (8) inverting input - in 4 (10) (12) noninverting input + in 4 (11) - + - + - + - + (2) out 1 (1) out 2 (14) out 3 (13) out 4 pin configuration +in 1 -in 2 +in 2 03 04 gnd -in 4 +in 3 -in 3 02 01 -in 1 +in 4 1 14 v + 2 3 13 12 11 10 9 8 4 5 6 7 sbl, pbl, db packages
ald4303a/ald4303 advanced linear devices 2 of 9 operating electrical characteristics t a = 25 c v + = +5v unless otherwise specified 4303a 4303 test parameter symbol min typ max min typ max unit conditions notes: 1 consists of junction leakage currents 2 sample tested parameters supply v s 1.5 5 1.5 5 v dual supply voltage v + 3 10 3 10 v singl e supply supply i s 50 90 50 90 ar load = current 4 comparators voltage a vd 10 100 10 100 v/mv r load 15k ? gain input offset v os 2 5.0 4 10.0 mv r load =1.5k ? voltage 7.0 12.0 0 c t a 70 c input offset i os 0.1 30 0.1 30 pa current 1 800 800 0 c t a 70 c input bias i b 0.1 30 0.1 30 pa current 1 1000 1000 0 c t a 70 c common mode input v icr -0.3 v + -1.5 -0.3 v + -1.5 v voltage range 2 low level i sink =12ma output v ol 0.18 0.4 0.18 0.4 v v input =1v voltage differential low level output i ol 24 60 24 60 ma v ol =1.0v current high level leakage i lh 0.1 20 0.1 20 na v oh = 5.0v current response r l =50k ? time 2 t rp 6.5 6.5 sc l = 15pf 10mv input step/10mv overdrive rl = 50k ? 55 sc l = 15pf ttl- level input step 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 sbl, pbl packages 0 c to +70 c db package -55 c to +125 c storage temperature range -65 c to +150 c lead temperature, 10 seconds +260 c
ald4303a/ald4303 advanced linear devices 3 of 9 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 = 50k common - mode voltage referred to supply voltage temperature ( c) 0.5 v+ -0.5 -1.0 0.5 v- -0.5 common - mode limits (v) -55 -25 0 25 50 125 100 75 v s = 2.5v tim e ( s) 012 4 36 57 response time for various input overdrives +2.5 100 0 0.0 -2.5 input voltage (mv) output voltage (v) ttl t a = 25 c v s = 2.5v 0v v in v+ v- v out + - 10mv 50k 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 tim e ( s) 0.0 0.1 0.2 0.4 0.3 0.6 0.5 0.7 response time for various input overdrives +2.5 0 100 0.0 -2.5 input voltage (mv) output voltage (v) ttl 5mv 10mv 20mv 50mv t a = 25 c v s = 2.5v 0v v in v+ v- v out + - 50k typical performance characteristics
ald4303a/ald4303 advanced linear devices 4 of 9 6 8 10 12 4 2 supply voltage (v) output low voltage vs. supply voltage output low voltage (v) t a = 25 c i ol = 12ma 0.0 0.2 0.4 0.5 0.6 0.1 0.3 0 -2 -4 -6 2 6 8 10 12 4 2 supply voltage (v) 6 4 input offset voltage vs. supply voltage representative samples input offset voltage (mv) t a = 25 c samples response time for representative samples 5 10 0 response time ( s) 50 100 150 200 v s = 2.5v t a = 25 c td lh samples response time for representative samples 5 10 0 response time ( s) 50 100 150 200 v s = 2.5v t a = 25 c td hl 10 1 100 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 normalized input offset voltage vs. temperature temperature ( c) +3 +2 +1 0 -1 -2 -3 -55 -25 0 25 50 125 100 75 normalized input offset voltage (mv) v cm = 0v v s = 2.5v typical performance characteristics (cont'd)
ald4303a/ald4303 advanced linear devices 5 of 9 typical applications zero crossing detector + +3v -3v 1/4 ald4303 v out v in 50k multiple relay drive + +5v +5v 1/4 ald4303 v ref v in voltage level translator + 1/4 ald4303 = 1.4v for ttl input = v + for cmos input 2 v out v ref v in v ref v ref output v out swings from rail-to-rail 50k v+ = +10v double quad limit window comparator + + +12v +12v + + +12v 50k 47k 50k vh 2 vh 1 vl 1 vl 2 ald4303 ald4303 +12v +12v v in vl 1 and vh 1 first limit window send warning. vl 2 and vh 2 second limit window execute system cutoff.
ald4303a/ald4303 advanced linear devices 6 of 9 design & operating notes: 1. in order to minimize stray oscillation, all unused inputs must be tied to ground. 2. the input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically le ss than 1pa at room temperature. these currents are a function of ambient temperature, and would have to be considered in applications where very high source impedance or high accuracy are involved. 3. the high output sinking current of 60ma for each output offers flexibility in many applications, as a separate buffer or driv er would not be necessary to drive the intended load. however, as the circuit normally operates close to ambient temperature due to its very l ow power consumption, thermal effects caused by large output current transients must be considered in certain applications. typical applications (cont'd) time delay generator + r f4 1/4 ald4303 1/4 ald4303 r f3 r f2 v + r f1 + 1/4 ald4303 + 1/4 ald4303 r t c t + v in v + v ref relay 1 relay 3 relay 2 relay 1 turns off followed by relay 2 and then relay 3 with fixed sequence and time delays selectrd by ratios r f1 , r f2 , r f3 and r f4. push-pull complementary power mosfet driver this circuit eliminates crossover current in the complementary power transistors. the outputs can be used to source and sink different loads or tied together to provide push-pull drive of the same load. r 50 k ? + + +12v +12v +12v p- channel vp 02 power mosfet 2a source 2a sink n - channel vn 01 power mosfet +12v 10k 40k 10k v 1 v 2 v in 1/2 ald4303 r r
ald4303a/ald4303 advanced linear devices 7 of 9 millimeters inches min max min max dim a a 1 b c d-14 e e h l s 1.75 0.25 0.45 0.25 8.75 4.05 6.30 0.937 8 0.50 0.053 0.004 0.014 0.007 0.336 0.140 0.224 0.024 0 0.010 0.069 0.010 0.018 0.010 0.345 0.160 0.248 0.037 8 0.020 1.27 bsc 0.050 bsc 1.35 0.10 0.35 0.18 8.55 3.50 5.70 0.60 0 0.25 ? 14 pin plastic soic package soic-14 package drawing e d e a a 1 b s (45 ) l c h s (45 ) ?
ald4303a/ald4303 advanced linear devices 8 of 9 14 pin plastic dip package pdip-14 package drawing b 1 d s b e a 2 a 1 a l e e 1 c e 1 ? millimeters inches min max min max dim a a 1 a 2 b b 1 c d-14 e e 1 e e 1 l s-14 ? 3.81 0.38 1.27 0.89 0.38 0.20 17.27 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 19.30 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 0.680 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 0.760 0.280 0.325 0.110 0.310 0.150 0.080 15
ald4303a/ald4303 advanced linear devices 9 of 9 e e 1 c e 1 ? d s b 1 e b l a l 2 a 1 l 1 a a 1 b b 1 c d-14 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 19.94 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 0.785 0.310 0.325 0.200 -- 0.070 0.098 15 2.54 bsc 7.62 bsc 0.100 bsc 0.300 bsc 14 pin cerdip package cerdip-14 package drawing
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