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MEMS barometric sensor rolls for portables

Posted: 25 Feb 2009     Print Version  Bookmark and Share

Keywords:MEMS  pressure sensor  barometric 

T5000 and ASB1200E sensors

Epcos AG has announced a compact MEMS pressure sensor claimed to be several times smaller than its competitors. At only 1.7mm by 1.7mm by 0.9mm, the sensor can be integrated into portable electronics devices such as watches and mobile phones to give them the capability to measure air pressure and/or altitude above sea level.

The MEMS-version T5000 is a surface mount device that is said to be well suited to integration in mass-market products that require highly automated production processes. Epcos also has a conventionally packaged sensor variant, the ASB1200E SMD pressure sensor. This has a 3mm by 3mm footprint and features a gel-protected stainless steel pressure port. Epcos envisions that it will enable further miniaturisation of barometric applications that are exposed to high humidity. The T5000 and ASB1200E sensors boast absolute pressure measurement of 300mbar to 1,200mbar and cover a measurement range of 20mV/V/bar. At the heart of the both devices is a piezo-resistive MEMS sensor chip made by Aktiv Sensor, a wholly owned subsidiary of Epcos.

Samples of the T5000 and ASB1200E are now available. Meanwhile, the company says that near-future developments will include a pressure sensor with integrated temperature compensation and a digital interface.

- Vanessa Knivett
Analog Designline Europe

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