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AD8290 - CMOS Sensor Amplifier

General Description

The AD8290 contains both an adjustable current source to drive a sensor and a difference amplifier to amplify the signal voltage.

The amplifier is set for a fixed gain of 50.

Key Features

  • Supply voltage range: 2.6 V to 5.5 V Low power 1.2 mA + 2× excitation current 0.5 μA shutdown current Low input bias current: ±100 pA High CMRR: 120 dB Space savings: 16-lead, 3.0 mm × 3.0 mm × 0.55 mm LFCSP Excitation current 300 μA to 1300 μA range Set with external resistor.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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G = 50, CMOS Sensor Amplifier with Current Excitation AD8290 FEATURES Supply voltage range: 2.6 V to 5.5 V Low power 1.2 mA + 2× excitation current 0.5 μA shutdown current Low input bias current: ±100 pA High CMRR: 120 dB Space savings: 16-lead, 3.0 mm × 3.0 mm × 0.55 mm LFCSP Excitation current 300 μA to 1300 μA range Set with external resistor GENERAL DESCRIPTION The AD8290 contains both an adjustable current source to drive a sensor and a difference amplifier to amplify the signal voltage. The amplifier is set for a fixed gain of 50. The AD8290 is an excellent solution for both the drive and the sensing aspects required for pressure, temperature, and strain gage bridges.