Compact pressure sensor IC operates over wide temperature range
Piezo-resistive pressure sensors from Rohm are claimed to have class-leading pressure accuracy and stable measurement at both low and high temperatures due to a built-in temperature correction function.
The BM1383GLV is built with the company’s MEMs technology. The piezo-resistive sensing element outputs a signal which is proportional with the atmospheric pressure. This signal is processed by an integrated logic using proprietary algorithms. This allows achieving high accuracy pressure information which is stable for the full temperature range.
The sensor is optimised for low power consumption especially for high accurate measurements. The I²C interface ensures easy 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 for use in wearable devices, activity monitors, altimeters and advanced detection for indoor navigation in smartphones and tablets.
Supplied in a robust and compact 2.5 x 2.5 x 0.95mm package, the ICs handle a pressure range of 300 to 1100hPA and deliver precise values of absolute as well as relative pressure accuracy, says the company. They feature a supply voltage of 1.71 to 3.6V, an average current of 5µA and operate in a temperature range of -40 to 85°C.
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