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Analog Interfacing a PSoC to MPXM2102A Pressure Sensor
Thursday, 10 December 2009 04:45
Pushek Madaan
The MPXM2102A series device from Freescale Semiconductors is a silicon piezoresistive pressure sensor providing a highly accurate and linear voltage output — directly proportional to the applied pressure. The sensor is a single, monolithic silicon diaphragm with the strain gauge and a thin–film resistor network integrated on–chip. The chip is laser trimmed for precise span and offset calibration and temperature compensation. It measures the applied pressure with reference to the built in reference vacuum and provides a differential analog signal. It measures from 0kPA to 100kPa with a change of 0.2mV/kPa.
This example project demonstrates how to use the PSoC1's analogs to measure pressure from this sensor. An INSAMP and ADCINCVR user modules are used to measure the voltage from the sensor an LCD user module is used to display the measured pressure. The documentation and project can be downloaded from the below link from Cypress website.
Interfacing a MPXM2102A Pressure Sensor
MPX2102.pdf