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).

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

Applications
    Piezoresistive Pressure and Acceleration
        Transducers and Transmitters
    Manifold Absolute Pressure (MAP) Sensors
    Automotive Systems
    Hydraulic Systems
    Industrial Pressure Sensors