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AD8479BRZ 데이터시트(PDF) 1 Page - Analog Devices |
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AD8479BRZ 데이터시트(HTML) 1 Page - Analog Devices |
1 / 16 page Very High Common-Mode Voltage Precision Difference Amplifier Data Sheet AD8479 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES ±600 V common-mode voltage range Rail-to-rail output Fixed gain of 1 Wide power supply range of ±2.5 V to ±18 V 550 μA typical power supply current Excellent ac specifications 90 dB minimum CMRR 130 kHz bandwidth High accuracy dc performance 5 ppm maximum gain nonlinearity 10 µV/°C maximum offset voltage drift 5 ppm/°C maximum gain drift APPLICATIONS High voltage current sensing Battery cell voltage monitors Power supply current monitors Motor controls Isolation GENERAL DESCRIPTION The AD8479 is a difference amplifier with a very high input common-mode voltage range. The AD8479 is a precision device that allows the user to accurately measure differential signals in the presence of high common-mode voltages up to ±600 V. The AD8479 can replace costly isolation amplifiers in applications that do not require galvanic isolation. The device operates over a ±600 V common-mode voltage range and has inputs that are protected from common-mode or differential mode transients up to ±600 V. The AD8479 has low offset voltage, low offset voltage drift, low gain drift, low common-mode rejection drift, and excellent common-mode rejection ratio (CMRR) over a wide frequency range. The AD8479 is available in a space-saving 8-lead SOIC package and is operational over the −40°C to +125°C temperature range. FUNCTIONAL BLOCK DIAGRAM 2 3 4 1 7 6 8 REF(–) –IN 1MΩ AD8479 1MΩ +IN –VS NC NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. +VS OUTPUT 5 REF(+) Figure 1. –800 –600 –400 –200 0 200 400 600 800 –20 –15 –10 –5 0 5 10 15 20 VOUT (V) VS = ±15V VS = ±5V Figure 2. Input Common-Mode Voltage vs. Output Voltage |
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