MEMS pressure sensor for consumer applications

13th June 2014

PEWATRON AG

Nat Bowers

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Suitable for consumer applications with a high degree of electronics integration and multi-functionality, the IPPS-015-1000hPa pressure sensor has been announced by Pewatron. This MEMS piezo-resistive pressure sensor chip and signal-conditioning ASIC are integrated into a compact and thin package measuring 4.5x4.0x1.0mm.

Featuring pin separation of 1.27mm and a minimum supply of only 2.0V, together with a low standby current of less than 0.1µA, the IPPS-015-1000hPa sensor is particularly suitable for mobile applications.

The signal-conditioning ASIC is a 16-bit ADC with an embedded 512-bit OTP (one-time programmable) memory. The sensors are individually calibrated in a wide temperature and pressure range. These values are stored in the OTP memory and can be easily accessed from an external microprocessor for easy implementation of the pressure sensor into the chosen application.

I2C or SPI digital communication interfaces between the microprocessor and the signal-conditioning ASIC ensure noise immunity and higher accuracy, as the read-out value is not dependent on the master ADC resolution. The measured pressure and temperature inputs to the microprocessor are true 16-bit digital values.

The IPPS-015-1000hPa pressure sensor measures absolute pressures in the range of 300Pa to 1100 hPa across a temperature range from -40 to +85°C and in a non-condensing humidity environment of up to 95% RH. The sensor complies with all RoHS and Reach directives.