operating temperature range * -55 c to +125 c0 c to +70 c0 c to +70 c 14-pin 14-pin 14-pin cerdip small outline plastic dip package package (soic) package ald4303adb ald4303asb ALD4303APB ald4303db ald4303sb ald4303pb quad precision micropower cmos voltage comparator with driver ald4303a/ald4303 ordering information 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 benefits ? extremely low power and high precision combination ? built-in high input impedance buffer ? built-in output driver with up to 60ma sink current a dvanced l inear d evices, i nc. features ? 3v, 5v and 12v supply ? guaranteed to drive 200 w loads ? fanout of 30ls ttl loads ? guaranteed maximum supply current of 22 m a per comparator ? industry standard pinout of lm393 type ? extremely low input bias currents -- 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 -- 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 w ; low input bias current of 10pa; very low power dissipation of 7.5 m 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/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 ald2301/ald2303. they can also be used with push-pull output types such as ald2302/ald4302 voltage compara- tors simultaneously with open drain comparators using a common v+. the ald4303a/ald4303 is ideal for a great variety of voltage com- parator applications, especially micropower detection circuits requiring very low input currents, high output currents and low standby power. * contact factory for industrial temperature range pin configuration block diagram ? 2005 advanced linear devices, inc. 415 tasman drive, sunnyvale, california 94089 -1706 tel: (408) 747-1155 fax: (408) 747-1286 http://www.aldinc.com db, pb, sb package +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 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
ald4303a/ald4303 advanced linear devices 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 voltage v s 1.5 6 1.5 6 v dual supplies supply v + 3 12 3 12 v single supply supply i s 50 90 50 90 m ar load = current 4 comparators voltage a vd 10 100 10 100 v/mv r load 3 15k w gain input offset v os 2 5.0 4 10.0 mv r load =1.5k w 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 w time 2 t rp 6.5 6.5 m sc l = 15pf 10mv input step/10mv overdrive rl = 50k w 55 m sc l = 15pf ttl- level input step absolute maximum ratings supply voltage, v + 13.2v differential input voltage range -0.3v to v + +0.3v power dissipation 600 mw operating temperature range pb, sb package 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 typical performance characteristics 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
ald4303a/ald4303 advanced linear devices typical performance characteristics 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
ald4303a/ald4303 advanced linear devices typical applications double quad limit window comparator zero crossing detector vl 1 and vh 1 first limit window send warning vl 2 and vh 2 second limit window execute system cutoff multiple relay drive voltage level translator + + +12v +12v + + +12v 50k 47k 50k vh 2 vh 1 vl 1 vl 2 ald4303 ald4303 +12v +12v v in + +3v -3v 1/4 ald4303 v out
v in 50k + +5v +5v 1/4 ald4303 v ref v in + 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
ald4303a/ald4303 advanced linear devices rm typical applications 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 less than 1 pa 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 driver would not be necessary to drive the intended load. however, as the circuit normally operates close to ambient temperature due to its very low power consumption, thermal effects caused by large output current transients must be considered in certain applications. 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 3 50 k w time delay generator + + +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 +
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.
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