1 Features
• Relative humidity (RH) sensor:
– Operating range: 0% to 100%RH
– Accuracy: ±0.5%RH typical
– Long-term drift: 0.19%RH/yr
– Ratiometric Analog Output to represent RH
• Temperature sensor:
– Operating range: –40°C to 125°C
– Accuracy: ±0.2°C typical
– Ratiometric Analog Output to represent
Temperature
• NIST traceability: relative humidity & temperature
• Output Short Circuit Protection
• Integrated Reset pin for offset calibration
• Integrated heater
• Low power: 230μA typical active current
• Supply voltage: 1.62V to 5.50V

2 Applications
• Automotive:
– ADAS Systems
– Automotive Cameras
– Automotive LIDAR Modules
– Electronic Power Steering Systems

3 Description
The HDC3120-Q1 is an integrated, capacitive based
relative humidity (RH) and temperature sensor
where the relative humidity and temperature sensor
results are represented as ratiometric analog output.
Conversion of signals to the analog domain provides
a robust solution in applications requiring signal
transmission over wire or other distance-based
use cases. The device provides high accuracy
measurements over a wide supply range (1.62V –
5.5V) and low power consumption while maintaining
less than 0.19% long term drift per year. The
HDC3120-Q1 is available in a compact 2.5mm
× 2.5mm × 0.8mm WSON 8-pin package. Both
the temperature and humidity sensors are 100%
tested and calibrated on a production setup that is
NIST traceable and verified with equipment that is
calibrated to ISO/IEC 17025 standards.