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AD8479 - Very High Common-Mode Voltage Precision Difference Amplifier

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.

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 310 kHz bandwidth High accuracy dc performance 5 ppm maximum gain nonlinearity 10 µV/°C maximum offset voltage drift 5 ppm/°C maximum gain drift.

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Datasheet Details

Part number AD8479
Manufacturer Analog Devices
File Size 394.22 KB
Description Very High Common-Mode Voltage Precision Difference Amplifier
Datasheet download datasheet AD8479 Datasheet

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Full PDF Text Transcription

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Data Sheet 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 310 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 Very High Common-Mode Voltage Precision Difference Amplifier AD8479 FUNCTIONAL BLOCK DIAGRAM AD8479 REF(–) 1 8 NC 1MΩ –IN 2 +IN 3 1MΩ –VS 4 7 +VS 6 OUTPUT 5 REF(+) 11118-001 NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. Figure 1.
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