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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 push-pull driver ald2332a/ald2332b/ald2332 applications ? mosfet driver ? high source impedance voltage comparison circuits ? multiple limit window comparator ? power supply voltage monitor ? photo-detector sensor circuit ? high speed led driver ? oscillators ? battery operated instruments ? remote signal detection ? multiple relay drivers benefits ? simple precision reference voltage setting ? on-chip input pre-amplifier and output buffers ? precision voltage comparison without pre-amplifier ? eliminate need for second power supply ? eliminate pull-up resistor a dvanced l inear d evices, i nc. general description the ald2332a/ald23 32b/ald2332 is a monolithic high performance dual precision voltage comparator built with advanced silicon gate epad ? cmos technology intended for high precision analog applica- tions. the ald2332a/ald23 32b/ald2332 offers ultra-low input offset voltages and currents at its input pre-amplifier, precision voltage com- parator and high-current output driver integrated on-chip, in one industry standard pinout 8 lead pdip or soic package. primary features include: very high typical input impedance of 10 12 ? ; low input bias current of 10pa; fast response time of 520ns with only 10mv input step signal ; very low power dissipation of 175 a per comparator; single (+5v) or dual ( 5v) power supply operation; and 50ma push-pull output drivers. the input voltage range includes ground, which makes th ese compara- tors ideal for single supply low level signal detection with high source impedance. the outputs can source and sink current allowing for application flexibility. they can be used in either wired-or connection without pull-up resistor or push-pull configuration. ald2332a/ald2332b/ ald2332 can also be used in wired-or connection with other open drain circuits such as the ald2331/ald2303 voltage comparators. the ald2332a/ald2332 b/ald2332 voltage comparators are ideal for a great variety of precision analog voltage comparator applications, especially in low level signal detection circuits which require low standby power and high output current. features ? guaranteed to drive 200 ? loads ? fanout of 30ls ttl loads ? low supply current of 175 a each comparator ? pinout of lm193 type industry standard voltage comparators ? extremely low input bias currents -- typically 10pa ? virtually eliminates source impedance effects ? low operating supply voltage of 4v to 10v ? single (+5v) and dual supply ( 5v) operation ? high speed for both large and small signals -- 180ns for ttl inputs and 400ns for 20mv overdrive ? cmos, nmos and ttl compatible ? push-pull outputs-current sourcing/ sinking ? high output sinking current -- typically 50ma ? low supply current spikes ? high gain -- 100v/mv pin configuration block diagram (1) out 1 (7) out 2 (4) gnd v + noninverting input +in 1 (3) inverting input -in 2 (6) noninverting input +in 2 (5) inverting input -in 1 (2) (8) v + 1 2 3 4 8 7 6 5 out 1 -in 1 +in 1 gnd v + out 2 -in 2 +in 2 sal, pal packages operating temperature range * 0 c to +70 c 0 c to +70 c 8-pin small outline 8-pinplastic package (soic) dip package ald2332asal ALD2332APAL ald2332bsal ald2332bpal ald2332sal ald2332pal ordering information (?l? suffix for lead free version) * contact factory for leaded (non-rohs) or high temperature versions.
ald2332a/ald2332b/ald2332 advanced linear devices 2 of 11 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 pal, sal packages 0 c to +70 c storage temperature range -65 c to +150 c lead temperature, 10 seconds +260 c operating electrical characteristics t a = 25 c v + = +5v unless otherwise specified 2332a 2332b 2332 parameter symbol min typ max min typ max min typ max unit test conditions supply v s 2 5 2 5 2 5 v dual supply voltage v +4 104 10 4 10 v single supply supply i s 350 500 350 500 350 500 a no load current two comparators voltage gain a vd 50 150 50 150 50 150 v/mv r load 15k input offset voltage v os 0.02 0.5 0.5 1.0 1.0 2.0 mv r load 1.5k ? input offset current 1 i os 0.01 20 0.01 20 0.01 20 pa input bias current 1 i b 0.01 20 0.01 20 0.01 20 pa common mode input v icr -0.3 v + -1.5 -0.3 v + -1.5 -0.3 v + -1.5 v voltage range 2 low level sink v ol 0.15 0.4 0.15 0.4 0.15 0.4 v i sink = 12ma output voltage v input = 1v differential low level sink i ol 24 50 24 50 24 50 ma v ol = 1.0 v output current sink output on high level source v oh 3.5 4.5 3.5 4.5 3.5 4.5 v i source = -2ma output voltage source output on response time 2 t rp 1.1 1.1 1.1 s r l = 5.1k ? , c l = 15pf 5mv input step/ 0mv overdrive t rp 2.4 2.4 2.4 s r l = 5.1k ? ,c l =15pf 1mvinput step/ 0mv overdrive t rp 400 400 400 ns r l = 5.1k ? , c l = 15pf 100mv input step/ 20mv overdrive t rp 180 180 180 ns r l = 5.1k ? ,c l =15pf ttl-level input step common mode cmrr 80 80 80 db v input = 0v to 2.5v rejection ratio power supply psrr 75 75 75 db v + = 4v to 5v rejection ratio notes: 1 consists of junction leakage currents 2 sample test parameter
ald2332a/ald2332b/ald2332 advanced linear devices 3 of 11 350 300 250 200 400 025 50 75 -25 -55 temperature ( c) supply current ( a) 100 450 500 550 125 v s = 2.5v no load all comparators supply current vs. temperature 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 = 2.5 v transfer function differential input voltage (mv) +5.0 -5.0 0.0 output voltage (v) +2.5 0.0 -2.5 t a = 25 c 400 300 200 100 500 6.0 8.0 10.0 12. 0 4.0 2.0 supply voltage (v) supply current ( a) v + t a = 25 c r l = - + 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 6 8 10 12 4 2 supply voltage (v) output high voltage vs. supply voltage output high voltage from v + (v) t a = 25 c i oh = -2ma v + -0.6 v + -0.1 v + -0.2 v + -0.3 v + -0.4 v + -0.5 v +
ald2332a/ald2332b/ald2332 advanced linear devices 4 of 11 -55 -25 0 25 50 75 100 125 0 1 10 100 1000 v + = +5v input bias current vs. temperature ambient temperature ( 0 c) input bias current (pa) low level output voltage vs. temperature 0.5 0.4 0.3 0.2 0.1 0.0 low level output voltage (v) ambient temperature ( c) -55 -25 0 25 50 125 100 75 v + = +3.5v v + = +5v v + = +10v i sink = 12ma v input = 1v differential saturation voltage vs. sink current output sink current (ma) 0 15 30 45 60 75 output saturation voltage (v) 3.0 2.0 1.0 0.0 2.5 1.5 0.5 v + = +5v t a = 125 0 c t a = -55 0 c t a = 85 0 c t a = 25 0 c t a = -25 0 c high level output voltage vs. temperature 8.0 6.0 4.0 0.0 high level output votage (v) ambient temperature ( c) -55 -25 0 25 50 125 100 75 2.0 10.0 v + = +10v v + = +5v v + = +4v i oh = -2ma input offset voltage vs. temperature 0.4 0.0 -0.4 0.8 -0.8 -1.2 1.2 -2.0 input offset voltage (mv) -55 -25 0 25 50 125 100 75 ambient temperature ( c) -1.6 2.0 1.6 r l = 5.1k ? v + = +5v v + = +2.5v 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 typical performance characteristics (cont'd)
ald2332a/ald2332b/ald2332 advanced linear devices 5 of 11 common mode rejection ratio vs. temperature common mode rejection mode (db) -55 -25 0 25 50 125 100 75 85.0 80.0 75.0 70.0 90.0 65.0 60.0 ambient temperature ( c) v + = +5v r l = 5.1k ? 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 response time for various input overdrives output voltage (v) time ( s) 50mv 20mv 10mv 5mv 2mv 1mv v + = +5v r l = 5.1k ? input step c l = 15pf t a = 25 0 c response time for various input overdrives output voltage (v) -1.0 6.0 2.0 0.0 1.0 3.0 4.0 5.0 0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 time ( s) t a = 25 0 c v + = +5v 1mv 2mv 5mv 10mv 20mv 50mv r l = 5.1k ? c l = 15pf input step power supply rejection ratio vs.temperature ambient temperature ( 0 c) -55 -25 0 25 50 100 125 75 90.0 85.0 70.0 power supply rejection ratio (db) 80.0 75.0 65.0 60.0 v + = +5v r l = 5.1k ? typical performance characteristics (cont'd)
ald2332a/ald2332b/ald2332 advanced linear devices 6 of 11 typical applications double dual limit window comparator + + +10v +10v + + +10v 50k 1k 50k vh 2 vh 1 vl 1 vl 2 v in +10v +10v zero crossing detector + +3v -5v v out v in 50k + +5v +5v v ref v in multiple relay drive +5 5v relay + - +5 v in v r precision single supply voltage comparator with direct relay driver precision single supply voltage comparator with direct relay driver + - 5v relay -5 +5 v in + 1k v in - vl 1 and vh 1 first limit window send warning vl 2 and vh 2 second limit window execute system cutoff
ald2332a/ald2332b/ald2332 advanced linear devices 7 of 11 double dual precison photo detector monitor voltage comparator with single supply and output level shift + - +5v v a = 0v to +10v +10v 0 v out v in + v in - v out - - + + q q v in v ref v + precision voltage comparator with complementary push-pull outputs v+ v limit2 photo- detector light - - + + led buzzer v limit 1 v external led turns on as photo-detector voltage reaches v limit 1. both led and horn turns on as photo-detector voltage reaches v limit 2. v external = +10v, v+ = +5v. response time measurement circuit response time is defined as the interval between the application of an input step function and the instant when the output reaches 50% of its maximum value as measured by the following test circuit: + - 5.1k ? out +5v 10x input step 1k ? 9k ? v in typical applications (cont'd)
ald2332a/ald2332b/ald2332 advanced linear devices 8 of 11 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. design & operating notes: 1. as each output sources up to 10ma in the output high state, the output stage of a wired - or low output circuit must be able to sink this current and still provide desired output voltage levels. for ttl output levels, this consideration limits the number to a maximum of three ald23 02 outputs wired-or together. 2. in order to minimize stray oscillation, all unused inputs must be tied to ground. 3. the input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically le ss than 1 pa at room temperature. the currents are a function of ambient temperature, and would have to be considered in applications where very hi gh source impedance or high accuracy are involved. 4. 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 low power cons umption, thermal effects caused by large output current transients must be considered in certain applications. typical applications (cont'd) time delay generator + r f4 v 3 r f3 r f2 v + r f1 + v 2 + v 1 r t c t + v in v + v ref push-pull complementary power mosfet driver + + +10v +10v +10v p- channel vp 02 power mosfet 2a source 2a sink n - channel vn 01 power mosfet +10v 10k 40k 10k v 1 v 2 v in
ald2332a/ald2332b/ald2332 advanced linear devices 9 of 11 precision dual limit window comparataor + + - - output high for v in v ref(low) v out v + v ref(high) v ref(low) r load v in + = 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 v + = +10v voltage level translator precison voltage comparator with +/-5v supply and output level shift precision voltage comparator with output level shift and high current load driver + - 15k -5v +5v v out 15k 100k 100k 0.1 f 0.1 f +5v 0 v out +5v + - -5v +5v r 2 =50 200 ? +5v r 1 = 15k r load v out v in + v in - 0.066v -4v v out typical applications (cont'd)
ald2332a/ald2332b/ald2332 advanced linear devices 10 of 11 8 pin plastic soic package 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 ? soic-8 package drawing l c h s (45 ) ? e a a 1 b d s (45 ) e
ald2332a/ald2332b/ald2332 advanced linear devices 11 of 11 8 pin plastic dip package 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 pdip-8 package drawing b 1 s b e e 1 d e a 2 a 1 a l c e 1 ?

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