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
● Hydraulic Systems
● Industrial Pressure Sensors