General Description
The MPS-350A series pressure sensor is a hybrid device containing an absolute piezoresistive pressure sensing element an
ASIC for signal conditioning, and a charge pump circuit to allow low voltage power supply support.
The sensor element is fabricated using bulk micromachining technology. The ASIC includes temperature and nonlinearity
corrections as well as offset and span calibration incorporating a 16 bit digital signal path. The internal charge pump
boosts the external power supply to 3V. The output from the charge pump is available for customer applications, and may
facilitate a reduction in component count for the target application. The device is digitally calibrated and tested over
temperature to ensure that the relevant accuracy and stability performance is met.
Output options include digital interfaces such as SPI and I2C as well as the traditional analogue output that can be
interfaced to an external ADC. ADC with fixed reference is recommended for this device. Temperature readout is optionally
available on digital SPI and I2C interface options. This device is a fiberglass substrate COB device.
Features
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Very low cost
Excellent repeatability
100% factory tested and calibrated
Stable and reliable
High volume manufacturing
Main Fields of Application
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Mobile altimeter/barometer
Weather Forecast
Wristwatch
Air Balloon
Blood Pressure Monitoring
