HTU21D

The TE Connectivity HTU21D is a digital humidity and temperature sensor IC featuring an I2C interface. This fully calibrated and linearized sensor provides plug-and-play functionality for OEM applications requiring accurate measurements. It is embedded in a compact 3 x 3 x 0.9 mm DFN package, making it suitable for high-volume and cost-sensitive applications with tight space constraints. The sensor is reflow solderable and lead-free, compatible with automated assembly processes. Its operating range spans from 0 to 100% RH and -40 to +125°C. The resolution can be adjusted via command, offering flexibility in data output.

Designed for reliability, the HTU21D offers instantaneous desaturation after saturation phases and includes features like low power consumption and a fast response time. Optional PTFE filters are available for enhanced protection against dust and water immersion, maintaining IP67 compliance. The sensor is individually calibrated and tested, with lot identification and an electronic identification code for traceability. It also supports low battery detection and checksums for improved communication reliability.

Applications for the HTU21D include home appliances, medical devices, printers, and humidifiers. Its small footprint, digital output, and robust performance make it an ideal choice for embedded systems where precise environmental monitoring is crucial.