Digital humidity sensor

25 February 2015 Analogue, Mixed Signal, LSI

The HTU21D is a new digital humidity sensor with temperature output. Made by Measurement Specialties, it is embedded in a reflow solderable DFN package with a 3 x 3 x 0,9 mm footprint. This sensor provides calibrated, linearised signals in digital, I²C format. HTU21D(F) digital humidity sensors are dedicated humidity and temperature plug-and-play transducers for OEM applications.

A software driver has been developed to provide easy interface to the sensor through four public functions. The driver will return humidity, temperature and serial number, and allow software reset of the device. The driver has initially been written for Microchip’s dsPIC33 microcontrollers but can easily be ported to any platform.

For more information contact Tobie Muller, Accutronics, +27 (0)11 782 8728, [email protected], www.accutronics.co.za

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