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MAX1450 - 1%-Accurate Signal Conditioner

Description

The MAX1450 sensor signal conditioner is optimized for piezoresistive sensor calibration and temperature compensation.

It includes an adjustable current source for sensor excitation and a 3-bit programmable-gain amplifier (PGA).

Features

  • 1% Sensor Signal Conditioning.
  • Corrects Sensor Errors Using Coefficients Stored in External Trimmable Resistors, Potentiometers, or DACs.
  • Compensates Offset, Offset TC, FSO, FSO TC, and FSO Linearity.
  • Rail-to-Rail Analog Output.
  • Programmable Current Source for Sensor Excitation.
  • Fast Signal-Path Settling Time (< 1ms).
  • Accepts Sensor Outputs from 10mV/V to 30mV/V.
  • Fully Analog Signal Path Ordering Information PART.

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Full PDF Text Transcription

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MAX1450 EVALUATION KIT AVAILABLE Low-Cost, 1%-Accurate Signal Conditioner for Piezoresistive Sensors General Description The MAX1450 sensor signal conditioner is optimized for piezoresistive sensor calibration and temperature compensation. It includes an adjustable current source for sensor excitation and a 3-bit programmable-gain amplifier (PGA). Achieving a total typical error factor within 1% of the sensor’s inherent repeatability errors, the MAX1450 compensates offset, full-span output (FSO), offset tempco, FSO tempco, and FSO nonlinearity of silicon piezoresistive sensors via external trimmable resistors, potentiometers, or digital-to-analog converters (DACs).
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