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Rohm touts accurate pressure sensors at varying temperatures

24 Feb 2015  | Graham Prophet

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Rohm introduced its BM1383GLV piezo-resistive pressure sensors which offer pressure accuracy and stable measurement at both low and high temperatures due to a built-in temperature correction function.

Built with Rohm's MEMs technology, the piezo-resistive sensing element outputs a signal, which is proportional to atmospheric pressure. This signal is processed by integrated logic to yield accurate pressure information which is stable for the full temperature range. The sensor offers low power consumption especially for highly accurate measurements.

BM1383GLV

The built-in I2C interface provides access to the measurement results in any kind of mobile or battery driven application. The sensor can detect differences in height (altitude) through pressure changes and capture movement data, which suit them for use in wearable devices, activity monitors, altimeters and advanced detection for indoor navigation in smartphones and tablets.

Absolute pressure

Housed in a 2.5mm x 2.5mm x 0.95mm package, the ICs handle a wide pressure range of 300hPA to 1,100hPA and deliver precise values of absolute as well as relative pressure accuracy. They feature a supply voltage of 1.71V to 3.6V, an average current of 5μA and operate in a temperature range of -40° to 85°C. The figure shows the effect of integrated temperature compensation function vs competitive designs.




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