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AD8417WBRMZ-RL Datenblatt(PDF) 1 Page - Analog Devices |
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AD8417WBRMZ-RL Datenblatt(HTML) 1 Page - Analog Devices |
1 / 16 page Bidirectional, Zero Drift, Current Sense Amplifier Data Sheet AD8417 FEATURES Typical 0.1 µV/°C offset drift Maximum ±400 µV voltage offset over full temperature range 2.7 V to 5.5 V power supply operating range Electromagnetic interference (EMI) filters Included High common-mode input voltage range −2 V to +70 V continuous −4 V to +85 V survival Initial gain = 60 V/V Wide operating temperature range: −40°C to +125°C Bidirectional operation Available in 8-lead SOIC and 8-lead MSOP Common-mode rejection ratio (CMRR): 86 dB, dc to 10 kHz Qualified for automotive applications APPLICATIONS High-side current sensing in Motor controls Solenoid controls Power management Low-side current sensing Diagnostic protection GENERAL DESCRIPTION The AD8417 is a high voltage, high resolution current shunt amplifier. It features an initial gain of 60 V/V, with a maximum ±0.3% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8417 offers excellent input common-mode rejection from −2 V to +70 V. The AD8417 performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, power management, and solenoid control. The AD8417 offers breakthrough performance throughout the −40°C to +125°C temperature range. It features a zero drift core, which leads to a typical offset drift of 0.1 µV/°C throughout the operating temperature range and the common-mode voltage range. The AD8417 is qualified for automotive applications. The device includes EMI filters and patented circuitry to enable output accuracy with pulse-width modulation (PWM) type input common-mode voltages. The typical input offset voltage is ±200 µV. The AD8417 is offered in 8-lead MSOP and SOIC packages. Table 1. Related Devices Part No. Description AD8205 Current sense amplifier, gain = 50 AD8206 Current sense amplifier, gain = 20 AD8207 High accuracy current sense amplifier, gain = 20 AD8210 High speed current sense amplifier, gain = 20 AD8418A High accuracy current sense amplifier, gain = 20 FUNCTIONAL BLOCK DIAGRAM + ISHUNT G = 60 VCM = –2V TO +70V VS = 2.7V TO 5.5V VREF1 VREF2 OUT 0V VS VS/2 VOUT ISHUNT EMI FILTER EMI FILTER VCM 0V 70V AD8417 VS +IN –IN – GND –50A 50A RSHUNT Figure 1. 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 |
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