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AD8572ARZ Datasheet(PDF) 1 Page - Analog Devices |
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AD8572ARZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 24 page Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers AD8571/AD8572/AD8574 Rev. E Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. 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 ©1999–2011 Analog Devices, Inc. All rights reserved. FEATURES Low offset voltage: 1 μV Input offset drift: 0.005 μV/°C Rail-to-rail input and output swing 5 V/2.7 V single-supply operation High gain: 145 dB typical CMRR: 140 dB typical PSRR: 130 dB typical Ultralow input bias current: 10 pA typical Low supply current: 750 μA per op amp Overload recovery time: 50 μs No external capacitors required APPLICATIONS Temperature sensors Pressure sensors Precision current sensing Strain gage amplifiers Medical instrumentation Thermocouple amplifiers GENERAL DESCRIPTION This family of amplifiers has ultralow offset, drift, and bias current. The AD8571, AD8572, and AD8574 are single, dual, and quad amplifiers, respectively, featuring rail-to-rail input and output swings. All are guaranteed to operate from 2.7 V to 5 V single supply. The AD857x family provides benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. Using Analog Devices, Inc., topology, these zero-drift amplifiers combine low cost with high accuracy. (No external capacitors are required.) Using a patented spread-spectrum, auto-zero technique, the AD857x family eliminates the intermodulation effects from interaction of the chopping function with the signal frequency in ac applications. With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the AD857x family is perfectly suited for applications where error sources cannot be tolerated. Position and pressure sensors, medical equipment, and strain gage amplifiers benefit greatly from nearly zero drift over their operating temperature range. Many more systems require the rail-to-rail input and output swings provided by the AD857x family. PIN CONFIGURATIONS V+ OUT A NC NC NC = NO CONNECT –IN A +IN A V– NC 8 7 6 5 1 2 3 4 AD8571 TOP VIEW (Not to Scale) Figure 1. 8-Lead MSOP (RM Suffix) NC = NO CONNECT AD8571 TOP VIEW (Not to Scale) NC 1 –IN A 2 +IN A 3 V– 4 NC V+ OUT A NC 8 7 6 5 Figure 2. 8-Lead SOIC (R Suffix) –IN A +IN A V– OUT B –IN B +IN B OUT A V+ 1 2 3 4 8 7 6 5 AD8572 TOP VIEW (Not to Scale) Figure 3. 8-Lead TSSOP (RU Suffix) –IN A +IN A V– OUT B –IN B +IN B OUT A V+ 1 2 3 4 8 7 6 5 AD8572 TOP VIEW (Not to Scale) Figure 4. 8-Lead SOIC (R Suffix) OUT A 1 –IN A 2 +IN A 3 V+ 4 +IN B 5 OUT D –IN D +IN D V– +IN C 14 13 12 11 10 –IN B 6 OUT B 7 –IN C OUT C 9 8 AD8574 TOP VIEW (Not to Scale) Figure 5. 14-Lead TSSOP (RU Suffix) OUT A 1 –IN A 2 +IN A 3 V+ 4 +IN B 5 OUT D –IN D +IN D V– +IN C 14 13 12 11 10 –IN B 6 OUT B 7 –IN C OUT C 9 8 AD8574 TOP VIEW (Not to Scale) Figure 6. 14-Lead SOIC (R Suffix) The AD857x family is specified for the extended industrial/ automotive temperature range (−40°C to +125°C). The AD8571 single amplifier is available in 8-lead MSOP and narrow SOIC packages. The AD8572 dual amplifier is available in 8-lead narrow SOIC and surface-mount TSSOP packages. The AD8574 quad amplifier is available in 14-lead narrow SOIC and TSSOP packages. |
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