DESCRIPTION

· The HDC2022 is an integrated relative humidity and temperature sensor with a factory-installed PTFE membrane cover.

· The cover is a hydrophobic micropourous PTFE foil that protects against dust and water according to IP67 specifications.

· The cover has a filtration efficiency of 99.99% down to a particle size of 100 nm.

· The HDC2022 device is backward-compatible with the HDC2080, providing high accuracy measurements with very low power consumption in a small DFN package.

· The capacitive-based sensor includes new integrated digital features and a heating element to dissipate condensation and moisture.

· The HDC2022 digital features include programmable interrupt thresholds to provide alerts and system wake-ups without requiring a microcontroller to continuously monitor the system.

· Combined with programmable sampling intervals, low power consumption, and 1.8-V supply voltage support, the HDC2022 is designed for ultra-low power battery-operated systems.

FEATURES

· Factory-installed IP67 rated water and dust protection cover.

· RH measurement range: 0% to 100%.

· Temperature measurement range: –40°C to 125°C.

· Humidity accuracy: ±2% (typical), ±3% (maximum).

· Temperature accuracy: ±0.2°C (typical), ±0.4°C (maximum).

· Supply voltage range: 1.62 V to 3.6 V.

· I2C interface compatibility.

· 50 nA sleep mode current.

· 550 nA average supply current (11-bit accuracy option, 1 measurement/second).

· Continuous conversion or one-shot measurement mode.

· Backward-compatible with HDC2080.

APPLICATIONS

· Thermostats.

· Smart speakers (with voice assistant).

· Washers and dryers.

· HVAC sensor transmitters (temperature, pressure, and humidity).

· HVAC system controllers.

· Wireless environmental sensors.