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 cmos voltage comparator with open drain driver ald4301a/ald4301 a dvanced l inear d evices, i nc. general description the ald4301a/ald4301 is a monolithic high performance quad voltage comparator built with advanced silicon gate cmos technol- ogy. 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; high output drive 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. 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 ald4301a/ald4301 is ideal for a great variety of voltage comparator applications, especially detection cir- cuits requiring very low input currents and low standby power, yet retaining high output current capability. features ? fanout of 30ls ttl loads ? low supply current of 55 a/comparator typical ? pinout/functional equivalent to lm393 types ? 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 ? high gain applications ? high source impedance voltage comparison circuits ? dual/quad limit window comparator ? power supply voltage monitor ? photo-detector sensor circuit ? relay or led driver ? oscillators ? battery operated instruments ? remote signal detection 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 ALD4301ASBL ald4301apbl ald4301adb ald4301sbl ald4301pbl ald4301db * contact factory for leaded (non-rohs) or high temperature versions. ordering information (?l? suffix for lead free version) 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 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
ald4301a/ald4301 advanced linear devices 2 of 9 operating electrical characteristics t a = 25 c v + = +5v unless otherwise specified 4301a 4301 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 single supply supply i s 220 350 220 350 a no load current voltage a vd 50 150 50 150 v/mv r load 15k ? gain input offset v os 510mvr load 1.5k ? voltage input offset i os 0.1 30 0.1 30 pa current 1 input bias i b 0.1 30 0.1 30 pa current 1 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 0.15 0.4 0.15 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 = 5.0 v current response r l =5.1k ? time 2 t rp 650 650 ns c l = 15pf 100mv input step/5mv overdrive rl = 5.1k ? 300 300 ns c 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
ald4301a/ald4301 advanced linear devices 3 of 9 typical performance characteristics 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 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 0 100 0.0 -2.5 input voltage (mv) output voltage (v) 5mv 10mv 20mv 50mv t a = 25 c v s = 2.5v 0v v in v+ v- v out + - 5.1k 2mv 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) 50mv 20mv 5mv 10mv t a = 25 c v s = 2.5v 0v v in v+ v- v out + - 2mv 5.1k 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 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
ald4301a/ald4301 advanced linear devices 4 of 9 typical performance characteristics (cont'd) typical applications quad 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. quad limit photo-detector monitor voltage comparator with complementary outputs v+ v limit2 photo- detector light - - + + led buzzer v limit 1 v external 1/2 ald4301 1/2 ald4301 + + - - 1/2 ald4301 output high for v in < v ref(high) minimum r load = 1.5k ? > and v out v in v + v ref(high) 1/2 ald4301 v ref(low) v ref(low) r load v in - - + + q q v in v ref v + 1/2 ald4301 1/2 ald4301 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
ald4301a/ald4301 advanced linear devices 5 of 9 typical applications (cont'd) voltage level translator + 1/4 ald4301 = 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 multiple relay drive + +5v +5v 1/4 ald4301 v ref v in zero crossing detector + +3v -3v 1/4 ald4301 v out v in 50k double dual limit window comparator + + +12v +12v + + +12v 50k 47k 50k vh 2 vh 1 vl 1 vl 2 ald4301 ald4301 +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.
ald4301a/ald4301 advanced linear devices 6 of 9 push-pull complementary power mosfet driver + + +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 ald4301 r r 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 ? time delay generator + r f4 1/4 ald4301 1/4 ald4301 r f3 r f2 v + r f1 + 1/4 ald4301 + 1/4 ald4301 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. 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)
ald4301a/ald4301 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 ) ?
ald4301a/ald4301 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
ald4301a/ald4301 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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