8.7mhz, 15nv/hz, rail-to-rail i/o, zero input crossover distortion amplifiers preliminary technical data ADA4500-2 rev. pra information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?20 12 analog devices, inc. all rights reserved. features psrr: 100db minimum cmrr: 100 db minimum supply current: 1.6 ma/amp max wide bandwidth: 8.7 mhz 2.7 v to 5.5 v single-supply operation rail-to-rail input and output low noise 1.1 v p-p from 0.1 hz to 10 hz 15nv/hz @ 1khz 150 v offset voltage maximum very low input bias current: 10 pa maximum applications pressure and position sensors remote security medical monitors process control hazard detectors photo diode applications general description the ada4500 is a dual 8.7mhz, 15 nv/hz, low power amplifier featuring rail-to-rail input and output swings while operating from a 2.7 v to 5.5 v single power supply. employing a novel circuit technology, these amplifiers offer zero input crossover distortion (high linearity and excellent psrr and cmrr performance), precision, wide bandwidth and very low bias current. this technology offer the excellent cmrr over the supply range without the cross-over distortion seen with the traditional complementary input stage. this combination of these features makes the ada4500 amplifier an ideal choice for precision sensor applications as it minimizes errors due to power supply voltage variations over the supply voltage and maintains high cmrr even for a rail-to-rail input op amp. this results in excellent performance for driving analog-to-digital (a/d) converters without degradation of performance. the input common mode range includes both the negative and positive supplies. sensors, handheld instrumentation, precision signal conditioning, and patient monitors can benefit from the features of the ada4500. the ada4500 is specified for the extended industrial temperature range (?40c to +125c). ADA4500-2 dual amplifiers are available in the standard 8-lead msop and lfcsp. pin configurations figure 1. 8-lead msop& lfcsp (rm & cp suffix) ADA4500-2
preliminary technical data ADA4500-2 rev. pra information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2009 analog devices, inc. all rights reserved. specifications electrical characteristics; v s = 2.7v v s = 2.7 v, v cm = vs/2, t a = 25c, r l = 10k ? , c l = 30 pf, unless otherwise specified. table 1. parameter symbol conditions min typ max unit input characteristics offset voltage v os 0 v < v cm < 2.7 v 150 v input bias current i b 1 10 pa ?40c < t a < +125c 600 pa input offset current i os 0.5 1 pa ?40c < t a < +125c 100 pa input voltage range ?40c < t a < +125c (v-) -0.3 (v+) + 0.3 v common-mode rejection ratio cmrr v cm = v- to v+ 100 110 db ?40c < t a < +125c 100 db large signal voltage gain a vo (v-) + 0.05 < v out < (v+) - 0.05 110 130 db ?40c < t a < +125c 105 db offset voltage drift ? v os / ? t ?40c < t a < +125c 0.2 5 v/c input capacitance common-mode input capacitance 3 pf differential input capacitance 2 pf input impedance tbd m ? output characteristics output voltage high v oh r l = 10 k to gnd 2.95 2.97 v r l = 2 k to gnd 2.90 2.95 v output voltage low v ol r l = 10 k to v s 10 50 mv r l = 2 k to v s 25 100 mv short circuit limit i sc +20/-40 ma power supply power supply rejection ratio psrr v s = 2.7 v to 5.5 v 100 110 db ?40c to +125c 100 db supply current/amplifier i sy v o = v s /2 1.35 1.6 ma ?40c < t a < +125c 1.9 ma dynamic performance slew rate sr 4.7 v/s gain bandwidth product gbp 8.6 mhz phase margin m 55 degrees noise performance total harmonic distortion + noise thd+n v s = 2.7 v, g= +1, f = 20hz to 20khz 0.002 % peak-to-peak noise e n p-p f = 0.1 to 10 hz 1.1 v p-p voltage noise density e n f = 1 khz 15 nv/hz current noise density i n f = 1 khz 0.5 fa/hz
preliminary technical data ada4500 -2 rev. pra | page 3 of 4 electrical characteristics; v s = 5v v s = 5 v, v cm = vs/2, t a = 25c, r l = 10k ? , c l = 30 pf, unless otherwise specified. table 2. parameter symbol conditions min typ max unit input characteristics offset voltage v os 0 v < v cm < 5 v 150 v input bias current i b 1 10 pa ?40c < t a < +125c 600 pa input offset current i os 0.5 1 pa ?40c < t a < +125c 100 pa input voltage range ?40c < t a < +125c (v-) -0.3 (v+) + 0.3 v common-mode rejection ratio cmrr v cm = v- to v+ 100 110 db ?40c < t a < +125c 100 db large signal voltage gain a vo (v-) + 0.05 < v out < (v+) - 0.05 110 130 db ?40c < t a < +125c 100 db offset voltage drift ? v os / ? t ?40c < t a < +125c 0.2 5 v/c input capacitance common-mode input capacitance 3 pf differential input capacitance 2 pf input impedance tbd m ? output characteristics output voltage high v oh r l = 10 k to gnd 4.95 4.97 v r l = 2 k to gnd 4.90 4.95 v output voltage low v ol r l = 10 k to v s 5 10 mv r l = 2 k to v s 25 30 mv short circuit limit i sc 50 ma power supply power supply rejection ratio psrr v s = 2.7 v to 5.5 v 100 110 db ?40c to +125c 100 db supply current/amplifier i sy v o = v s /2 1.5 1.6 ma ?40c < t a < +125c 1.9 ma dynamic performance slew rate sr 5.2 v/s gain bandwidth product gbp 8.7 mhz phase margin m 54 degrees noise performance total harmonic distortion + noise thd+n v s = 5 v, g= +1, f = 20hz to 20khz 0.002 % peak-to-peak noise e n p-p f = 0.1 to 10 hz 1.1 v p-p voltage noise density e n f = 1 khz 15 nv/hz current noise density i n f = 1 khz 0.5 fa/hz
ADA4500-2 preliminary technical data rev. pra | page 4 of 4 absolute maximum ratings table 3. parameter rating supply voltage 6 v input voltage -v s C 0.3v, +v s +0.3v differential input voltage 1 -v s C 0.6v, +v s +0.6v output short-circuit duration to gnd indefinite storage temperature range rm, cp packages ?65c to +150c operating temperature range ?40c to +125c junction temperature range rm, cp packages ?65c to +150c lead temperature (soldering, 60 sec) 300c 1 differential input voltage is limited to 5.6 v or the su pply voltage+0.6v, whichever is less. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. thermal resistance ja is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. table 4. thermal resistance package type ja jc unit 8-lead msop (rm-8) tbd tbd oc/w 8-lead lfcsp (cp-8) tbd tbd oc/w esd caution ?2012 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. pr10617-0-2/12(pra)
|
