Sensors The Next Generation in Humidity Sensing

Editor: Ahlam Rais

Sensirion presents the new ultra-low power humidity sensor SHT40 for battery-driven applications and high-volume consumer electronics. The SHT40 is part of the company’s 4th generation of humidity sensors – the SHT4x series.

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Sensirion’s new SHT40 sensor builds on a completely new and optimized Cmosens chip offering ultra-low power consumption and industry-leading accuracy specifications.
Sensirion’s new SHT40 sensor builds on a completely new and optimized Cmosens chip offering ultra-low power consumption and industry-leading accuracy specifications.
(Source: Sensirion)

As one of Sensirion’s industry-proven humidity and temperature sensors, the SHT40 offers an unmatched price-performance ratio on the global market. Tape and reel packaging combined with its suitability for standard SMD assembly processes make the sensor ideal for high-volume applications, states the firm.

The new sensor builds on a completely new and optimized Cmosens chip offering ultra-low power consumption and industry-leading accuracy specifications. The company’s Cmosens Technology provides a complete sensor system on a single chip, with a fully calibrated digital I2C fast-mode plus interface, adds the company. The sensor covers operating ranges from 0 to 100 % RH and from-40°C to 125°C with accuracies of ±1.8 % RH and ±0.2°C.

With the extended supply voltage range from 1.08 V to 3.6 V and 400 nA average current, the sensor is perfectly suited for mobile and battery-driven applications. The exceptionally small size in a robust DFN housing enables integration into challenging designs while meeting the highest reliability demands, as demonstrated by the JEDEC JESD47 qualification, mentions the firm.

In 2021, the high-accuracy versions SHT41 and SHT45 will be available. They feature typical and maximal accuracies that have been honed down to ∆RH = ± 1.5 % RH and ∆T = ± 0.1°C, making them suitable for the most demanding applications in all industries, explains the company. The year 2021 will also bring additional protection options to complete the portfolio, meeting even the most rigorous technological challenges. The on-package filter membrane ensures IP67 compliance for exposed designs, while the protection option ensures reliable conformal coating, concludes the firm.

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