Texas Instruments' HDC3022 and HDC3022-Q1are integrated capacitive-based relative humidity (RH) and temperature sensors that provide high-accuracy measurements over a wide supply range (1.62 V to 5.5 V) and ultra-low power consumption in a compact 2.5 mm x 2.5 mm package. The temperature and humidity sensor is 100% tested and trimmed on a production setup that is NIST-traceable and verified with equipment that is calibrated to the ISO/IEC 17025 standards. The offset error correction reduces the RH sensor offset due to aging, exposure to extreme operating conditions, and contaminants, which returns the device to within the accuracy specifications.
For battery IoT applications, the auto measurement mode and ALERT feature enable low system power by maximizing the MCU sleep time. Four different I2C addresses support speeds of up to 1 MHz. The heating element dissipates condensation and moisture. The sensor includes a cover option that protects the open-cavity RH sensor. The permanent IP67 filter membrane offers protection from dust, water, and PCB washes.
Features
- AEC-Q100 qualified for automotive applications (-Q1):
- Temperature Grade 1: -40°C to +125°C
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4
- RH sensor:
- Operating range: 0% to 100%
- Accuracy: ±0.5% (typ.)
- Offset error correction reduces the offset to return the device to within the accuracy specification
- Long-term drift: 0.19% RH/yr
- Condensation protection with an integrated heater
- Temperature sensor:
- Operating temperature range: -40°C to +125°C
- Accuracy: ±0.1°C (typ.)
- NIST traceability: RH and temperature
- I2C interface compatibility up to 1 MHz speeds:
- Four selectable I2C addresses
- Data protection through the CRC checksum
- Supply voltage range: 1.62 V to 5.50 V
- Auto measurement mode is available
- Programmable interrupts
- Programmable RH and temperature measurement offset
- Factory-installed polyimide tape assembly cover
- Factory-installed IP67-rated environmental cover
- Low power: 0.4 µA (avg. current)
- Package: WSON with wettable flanks options (-Q1)
Applications
- Washers and dryers
- Refrigerators and freezers
- Industrial transportation
- Cold-chain asset tracking and data loggers
- IoT environmental sensors
- Air quality and gas detection
- Humidifiers/dehumidifiers
- Thermostats
- CPAP and ventilators
- Water leak detectors
- IP cameras
- Automotive (-Q1):
- HVAC control modules and sensors (air quality)
- Particulate matter PM2.5
- Cameras
- Battery management systems
- Onboard charging
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Texas Instruments' HDC3022 and HDC3022-Q1are integrated capacitive-based relative humidity (RH) and temperature sensors that provide high-accuracy measurements over a wide supply range (1.62 V to 5.5 V) and ultra-low power consumption in a compact 2.5 mm x 2.5 mm package. The temperature and humidity sensor is 100% tested and trimmed on a production setup that is NIST-traceable and verified with equipment that is calibrated to the ISO/IEC 17025 standards. The offset error correction reduces the RH sensor offset due to aging, exposure to extreme operating conditions, and contaminants, which returns the device to within the accuracy specifications.
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