New digital humidity and temperature sensor

Jon Lawson

The SHTC3 from Sensirion is a digital humidity and temperature sensor optimised for battery-driven applications and high-volume consumer electronics. The sensor has been designed to overcome conventional limits in size and power consumption in order to fulfil current and future requirements. The SHTC3 improves the performance and flexibility of the SHTC1, while maintaining its proven reliability.

Sensirion’s CMOSens technology offers a complete sensor system on a single chip, consisting of a capacitive humidity sensor, a bandgap temperature sensor, analog and digital signal processing, A/D converter, calibration data memory and a digital communication interface supporting I2C fast mode. 

The small 2 x 2 x 0.75 mm3 DFN package enables applications in even the most limited space. The sensor covers a humidity measurement range of 0 to 100% RH and a temperature measurement range of -40°C to 125°C with a typical accuracy of ±2% RH and ±0.2°C. The broad supply voltage of 1.62 V to 3.6 V and an energy budget below 1 μJ per measurement make the SHTC3 perfectly suited to mobile or wireless applications.