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Infineon delivers pressure sensor for mobile, wearables

Posted: 06 Mar 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Wearables? internet of things? wireless health monitor?

Infineon launched the DPS310, a MEMS (Micro Electro Mechanical Systems) pressure sensor for use in mobile and wearable gadgets and Internet of Things.

The DPS310 is a barometric pressure sensor that can measure relative vertical position to within 5cm and thereby enables enhanced navigation, location, well-being, gesture recognition and weather monitoring applications.

The ability to calculate elevation gain and vertical speed suits activity tracking in mobile and wearable health and sports gadgets, while ultra-precise pressure measurement opens up new possibilities for gesture recognition and the detection of rapid weather changes.

Infineon's DPS310

The Infineon DPS310 pressure sensor is based on the capacitive sensing principle rather than the piezoelectric principle employed in most other digital pressure sensors. This guarantees high precision across a broad range of temperatures even when temperature changes rapidly.

The DPS310 operates at a supply voltage of 1.7V to 3.6V and it comes in a package measuring 2mm x 2.5mm x 1mm. Current consumption is 3?A at one measurement per second, falling to just less than 1?A in standby mode. An integrated FIFO that stores the last 32 measurements helps to further reduce overall system power consumption by extending the time that a host processor can remain in sleep mode between sensor readouts.

The DPS310 measures pressures from 300hPa to 1200hPa and at temperatures from -40C to 85C. Sensor measurement data and calibration coefficients are available through the sensor's I 2C/SPI digital interface.

Engineering samples of the DPS310 are set to be available in May 2015 with volume production planned for 3Q15. Infineon will support design-in with starter kits and evaluation boards.

- Peter Clarke
??EE Times Europe

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