HDC2021DEBT

HDC2021DEBT 1 Features

HDC2021DEBT 3 Description

• Factory-installed polyimide tape to protect sensorduring assembly • 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 VI2C interface compatibility • • 50 nA sleep mode current • 550 nA average supply current (11-bit accuracyoption, 1 measurement/second) • Continuous conversion or one-shot measurementmode • Backward-compatible with HDC2080

HDC2021DEBT 2 Applications

• Thermostats • Smart speakers (with voice assistant) • Washers and dryers • HVAC sensor transmitters (temperature, pressure,and humidity) • HVAC system controllers • Wireless environmental sensorsThe HDC2021 is an integrated relative humidity andtemperature sensor with a factory-installed polyimidetape cover over the opening of the relative humiditysensor element. The tape cover provides protectionagainst pollutants that can appear in certain stages ofthe manufacturing process, such as SMT assembly,PCB board wash, and conformal coating. The tapedesign allows for a full conformal coating of the PCB,and includes an adhesive free corner tab for quickremoval using tweezers.The HDC2021 device is backward-compatible with theHDC2080, providing high accuracy measurementswith very low power consumption in a small DFNpackage. The capacitive-based sensor includes newintegrated digital features and a heating element todissipate condensation and moisture. The HDC2021digital features include programmable interruptthresholds to provide alerts and system wake-upswithout requiring a microcontroller to continuouslymonitor the system. Combined with programmablesampling intervals, low power consumption, and 1.8-Vsupply voltage support, the HDC2021 is designed forultra-low power battery-operated systems.Device InformationTypical ApplicationRH Accuracy (TA = 30°C)