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AD8208WBRMZ Datasheet(PDF) 1 Page - Analog Devices |
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AD8208WBRMZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page High Voltage, Precision Difference Amplifier AD8208 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2010 Analog Devices, Inc. All rights reserved. FEATURES Qualified for automotive applications EMI filters included High common-mode voltage range −2 V to +45 V operating −24 V to +80 V survival Buffered output voltage Gain = 20 V/V Low-pass filter (1-pole or 2-pole) Wide operating temperature range 8-lead SOIC: −40°C to +125°C 8-lead MSOP: −40°C to +125°C Excellent ac and dc performance ±1 mV voltage offset −5 ppm/°C typical gain drift 80 dB CMRR minimum dc to 10 kHz APPLICATIONS High-side current sensing Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection FUNCTIONAL BLOCK DIAGRAM OUT +IN –IN GND VS + – AD8208 G = 2 G = 10 A1 A2 + – EMI FILTER EMI FILTER EMI FILTER Figure 1. GENERAL DESCRIPTION The AD8208 is a single-supply difference amplifier ideal for amplifying and low-pass filtering small differential voltages in the presence of a large common-mode voltage. The input common- mode voltage range extends from −2 V to +45 V at a single +5 V supply. The AD8208 is qualified for automotive applications. The amplifier offers enhanced input overvoltage and ESD protection, and includes EMI filtering. Automotive applications demand robust, precision components for improved system control. The AD8208 provides excellent ac and dc performance, minimizing errors in the application. Typical offset and gain drift in both the SOIC and MSOP packages are less than 5 μV/°C and 10 ppm/°C, respectively. The device also delivers a minimum CMRR of 80 dB from dc to 10 kHz. The AD8208 features an externally accessible 100 kΩ resistor at the output of the preamplifier (A1), which can be used for low- pass filtering and for establishing gains other than 20. |
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