DESCRIPTION

· The HDC302x is a capacitive-based relative humidity (RH) and temperature sensor with high accuracy and ultra-low power consumption.

· It operates over a wide supply range (1.62V – 5.5V) and comes in a compact 2.5mm × 2.5mm × 0.8mm WSON 8-pin package.

· Both sensors are 100% tested and trimmed on a NIST traceable production setup.

· Offset Error Correction ensures accuracy by reducing RH sensor offset due to aging, extreme conditions, and contaminants.

· Features include auto measurement mode, ALERT function, and four selectable I2C addresses supporting speeds up to 1MHz.

· The HDC3020 is an open cavity package, while HDC3021 and HDC3022 offer protective covers for the RH sensor.

FEATURES

· RH Sensor: 0% to 100% operating range, ±0.5% accuracy, 0.19%RH/yr long-term drift, and condensation protection with an integrated heater.

· Temperature Sensor: –40°C to 125°C operating range, ±0.1°C accuracy, and ±0.03°C/yr long-term drift.

· NIST traceability for both RH and temperature measurements.

· Low power consumption with an average current of 0.4µA.

· I2C interface compatibility up to 1MHz speeds, with data protection through CRC checksum.

· Supply voltage range: 1.62V to 5.50V.

· Programmable interrupts and measurement offsets.

· Factory-installed polyimide tape and IP67 rated environmental covers.

APPLICATIONS

· Home appliances: washer & dryer, refrigerator & freezer, humidifier/dehumidifier, thermostat.

· Industrial transport and cold chain asset tracking.

· IoT environmental sensors and air quality/gas detection.

· Medical devices: CPAP and ventilator.

· Water leak detectors and IP camera RH sensors.