MAX1450
Low-Cost, 1%-Accurate Signal Conditioner for Piezoresistive Sensors
Digitally Compensates Sensors to 1% Accuracy
Part Details
- 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
- Contains PGA, current source
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).
The MAX1450 is capable of compensating sensors that display close error distributions with a single temperature point, making it ideal for low-cost, medium-accuracy applications. Although optimized for use with popular piezoresistive sensors, it may also be used with other resistive sensor types such as strain gauges.
Applications
- Hydraulic Systems
- Manifold Absolute Pressure (MAP) Sensors
- Piezoresistive Pressure and Acceleration Transducers and Transmitters
Documentation
Data Sheet 1
Application Note 1
Technical Articles 5
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADC/DAC Combo Converters 1 | ||
| MAX1455 | Obsolete | Low-Cost Precision Sensor Signal Conditioner |
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