Analogue, Mixed Signal, LSI


Differential air pressure sensors

19 April 2017 Analogue, Mixed Signal, LSI

Targeting high-volume applications, the SPD800 series of CMOS technology digital and analog differential pressure sensors from Sensirion have been designed to measure the pressure of air and non-aggressive gases and deliver accurate and stable results covering a range of up to ±500 Pa (±5 millibars or ±5 cm of water), even at very low differential pressures.

The products are based on Sensirion’s CMOSens technology, which integrates a sensor element and all the necessary signal conditioning electronics – including analog and digital signal processing – on a single tiny CMOS chip. The technology is well proven and is suited for high-quality and cost-sensitive volume production.

The SDP800 series sensor element, which uses flow-through technology to measure differential pressure, together with the on-chip signal processing and digital calibration, delivers high accuracy with no offset drift, right down to the lower end of the measurement range. These new CMOSens-based sensors largely overcome the limitations in offset drift and accuracy of traditional static or dynamic differential pressure sensors commonly used in HVAC applications.

Available in the SDP800 series are the 4-pin, ±500 Pa SDP800-500PA and the 4-pin, ±125 Pa SDP800-125PA. As well as offering characteristics including high reliability, long-term stability and an excellent signal-to-noise ratio, the sensors also feature a two-wire digital interface for easy connection to microcontrollers. In addition, the Sensirion EK-P5 evaluation kit enables easy and fast sensor evaluation via PC test software, connected via USB cable.

For more information contact RS Components, +27 (0)11 691 9300, [email protected], www.za.rs-online.com



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