HDC2021 - Texas Instruments

HDC2021 Low-Power Humidity and Temperature Sensor

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 ta.

Features

• 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 2 Applications
• Thermostats
• Smart speakers (with voice assistant)
• Wa.