Humidity accuracy: ±2% (typical), ±3% (maximum)
Temperature accuracy: ±0.2°C (typical), ±0.4°C (maximum)
Continuous conversion or one-shot measurement mode
Backward-compatible with HDC2080
The HDC2021 is an integrated relative humidity and temperature sensor with a factory-installed polyimide tape cover over the opening of the relative humidity sensor element. The tape cover provides protection against pollutants that can appear in certain stages of the manufacturing process, such as SMT assembly, PCB board wash, and conformal coating. The tape design allows for a full conformal coating of the PCB, and includes an adhesive free corner tab for quick removal using tweezers.
The 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 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 is designed for ultra-low power battery-operated systems.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | HDC2021 High-Accuracy, Low-Power Humidity and Temperature Sensor datasheet (Rev. A) | 26 Jun 2020 | |
| * | User guide | HDC20XX Silicon User's Guide | PDF | HTML | 30 Nov 2020 |
| White paper | 85°C/85% RH Accelerated Life Test Impact on Humidity Sensors (Rev. A) | PDF | HTML | 07 Sep 2021 | |
| Technical article | Why long-term consistent performance matters for relative humidity sensors | 21 Jun 2021 | ||
| Application note | Is a Protective Cover Needed for Humidity Sensors? | PDF | HTML | 21 Apr 2021 | |
| Technical article | How accurate sensing in HVAC systems improves efficiency and saves consumers money | 26 Jan 2021 | ||
| Technical article | Interface to sensors in seconds with ASC Studio | 12 Nov 2020 | ||
| Technical article | Understanding tamper detection sensors | 18 Nov 2019 | ||
| Application note | Programming the HDC20X0 Devices | 29 Aug 2018 | ||
| Application note | Humidity Sensor: Storage and Handling Guidelines | 28 Aug 2017 | ||
| Application note | Optimizing Placement and Routing for Humidity Sensors (Rev. A) | 06 Mar 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | Download |
|---|---|---|
| WSON (DEB) | 6 | View options |
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