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XR18910 Datasheet 8:1 Sensor Interface Analog Front End

Manufacturer: MaxLinear

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General Description

The XR18910 is a unique sensor interface integrated circuit with an onboard 8:1 multiplexer, offset correction Digital-to-Analog Converter (DAC), instrumentation amplifier and voltage reference.

The XR18910 is designed to integrate multiple bridge sensors with a Microcontroller (MCU) or Field-Programmable Gate Array (FPGA).

The integrated offset correction DAC provides digital calibration of the variable and in many cases substantial offset voltage generated by the bridge sensors.

Overview

XR18910 8:1 Sensor Interface Analog Front End.

Key Features

  • Integrated features for interfacing multiple bridge sensors with an MCU or FPGA 8:1 differential MUX with I2C interface Instrumentation amplifier LDO Offset correction DAC with I2C interface (±560mV offset correction range).
  • Eight selectable voltage gains from 2V/V to 760V/V with only ±0.5% gain error.
  • 3mV maximum input offset voltage.
  • 100pA maximum input bias current.
  • 559μA maximum supply current.
  • 2.7V to 5V analog supply voltage rang.

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