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AD8228BRMZ Datasheet(PDF) 1 Page - Analog Devices |
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AD8228BRMZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 24 page Low Gain Drift Precision Instrumentation Amplifier AD8228 Rev. 0 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 ©2008 Analog Devices, Inc. All rights reserved. FEATURES Easy to use Pin strappable gains of 10 and 100 Wide power supply range: ±2.3 V to ±18 V DC specifications (B Grade, G = 10) 2 ppm/°C gain drift 0.02% gain error 50 μV maximum input offset voltage 0.8 μV/°C maximum input offset drift 0.6 nA maximum input bias current 100 dB CMRR AC specifications 650 kHz, –3 dB bandwidth (G = 10) 2 V/μs slew rate Low noise 8 nV/√Hz, @ 1 kHz (G = 100) 0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100) APPLICATIONS Weigh scales Industrial process controls Bridge amplifiers Precision data acquisition systems Medical instrumentation Strain gages Transducer interfaces GENERAL DESCRIPTION The AD8228 is a high performance instrumentation amplifier with very high gain accuracy. Because all gain setting resistors are internal and laser trimmed, gain accuracy and gain drift are better than can be achieved with typical instrumentation amplifiers. Low voltage offset, low offset drift, low gain drift, high gain accuracy, and high CMRR make this part an excellent choice in applications that demand the best dc performance possible, such as bridge signal conditioning. CONNECTION DIAGRAM 8 7 6 5 1 2 3 4 –IN G1 G2 +VS VOUT REF –VS +IN TOP VIEW (Not to Scale) AD8228 Figure 1. Table 1. Instrumentation Amplifiers by Category General Purpose Zero Drift Military Grade Low Power High Speed PGA AD82201 AD82311 AD620 AD6271 AD8250 AD8221 AD85531 AD621 AD6231 AD8251 AD8222 AD85551 AD524 AD8253 AD82241 AD85561 AD526 AD8228 AD85571 AD624 1 Rail-to-rail output. The AD8228 operates on both single and dual supplies. Because the part can operate on supplies up to ±18 V, it is well suited for applications where high common-mode input voltages are encountered. The AD8228 is available in 8-lead MSOP and SOIC packages. Performance is specified over the entire industrial temperature range of −40°C to +85°C for all grades. Furthermore, the AD8228 is operational from −40°C to +125°C. For a pin-compatible ampli- fier with similar specifications, but with a gain range of 1 to 1000, see the AD8221. |
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