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.

• Factory-installed polyimide tape to protect sensor during 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 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

• Relative humidity accuracy (Typ) (%RH)
• ±2
• Temperature accuracy (Typ) (°C)
• ±0.2
• Relative humidity operating range (Typ) (%RH)
• 0 - 100
• Supply voltage (Min)
• 1.62
• Supply voltage (Max)
• 3.6
• Average supply current (Typ) (uA)
• 0.55 @ 1 sample / sec
• Operating temperature range (C)
• -40 to 125
• Interface type
• I2C
• Package type
• Tape cover
• Rating
• Catalog

HDC2021的完整型号有：HDC2021DEBR、HDC2021DEBT，以下是这些产品的关键参数及官网采购报价：

HDC2021DEBR，工作温度：-40 to 125，封装：WSON (DEB)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网HDC2021DEBR的批量USD价格：1.386（1000+）

HDC2021DEBT，工作温度：-40 to 125，封装：WSON (DEB)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网HDC2021DEBT的批量USD价格：1.663（1000+）

HDC2080EVM — HDC2080 低功耗湿度和温度传感器评估模块

The HDC2080EVM (evaluation module) is an easy to use, plug-and-play, platform for evaluating the functionality and performance of the HDC2080 humidity and temperature sensor. The EVM utilizes a USB interface with MSP430F5528 microcontroller to establish communication between the HDC2080 (...)