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HDC3120

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±0.5% RH accurate analog-output humidity sensor

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HDC3120

ACTIVE
Data sheet Order now

Product details

Relative humidity accuracy (typ) (%RH) 0.5 Temperature accuracy (typ) (°C) 0.2 Relative humidity operating range (typ) (%RH) 0 to 100 Average supply current (typ) (µA) 230 Operating temperature range (°C) -40 to 125 Interface type Analog voltage (ratiometric) Rating Catalog
Relative humidity accuracy (typ) (%RH) 0.5 Temperature accuracy (typ) (°C) 0.2 Relative humidity operating range (typ) (%RH) 0 to 100 Average supply current (typ) (µA) 230 Operating temperature range (°C) -40 to 125 Interface type Analog voltage (ratiometric) Rating Catalog
WSON (DEF) 8 6.25 mm² (2.5 mm × 2.5 mm)
  • Relative humidity (RH) sensor:
    • Operating range: 0% to 100%RH
    • Accuracy: ±1%RH typical
    • Long-term drift: 0.19%RH/yr
    • Ratiometric Output: 10.0% to 90.0%VDD
  • Temperature sensor:
    • Operating range: –40°C to 125°C
    • Accuracy: ±0.2°C typical
    • Ratiometric Output: 12.3% to 87.7%VDD
  • NIST traceability
  • Output Short Circuit Protection
  • Integrated heater
  • High capacitive load drive up to 47nF
  • Low power: 250µA typical active current
  • Supply voltage: 1.62V to 5.50V
  • Relative humidity (RH) sensor:
    • Operating range: 0% to 100%RH
    • Accuracy: ±1%RH typical
    • Long-term drift: 0.19%RH/yr
    • Ratiometric Output: 10.0% to 90.0%VDD
  • Temperature sensor:
    • Operating range: –40°C to 125°C
    • Accuracy: ±0.2°C typical
    • Ratiometric Output: 12.3% to 87.7%VDD
  • NIST traceability
  • Output Short Circuit Protection
  • Integrated heater
  • High capacitive load drive up to 47nF
  • Low power: 250µA typical active current
  • Supply voltage: 1.62V to 5.50V

The HDC3120 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 design for 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 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.

The HDC3120 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 design for 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 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.
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* Data sheet HDC3120 High-Accuracy (1%RH, 0.2°C) Analog Humidity and Temperature Sensor, With Low Long-Term Drift (0.19%RH/yr), and 4s RH% Response datasheet (Rev. A) PDF | HTML Jun 11, 2025
* User guide HDC302x Silicon Users Guide (Rev. D) PDF | HTML Feb 18, 2025
Application note How to Use the Integrated Heater to Mitigate RH Drift PDF | HTML May 1, 2026
Product overview Humidity Sensor Comparison Guide PDF | HTML Jan 2, 2026
Application note TI Humidity Sensors: Programming & Integration Guide PDF | HTML Nov 3, 2025
Application note How to Debug RH Accuracy Issues in RH Sensors PDF | HTML Oct 30, 2025
Application note Humidity Sensor-Based Water Ingress Monitoring for Automotive Electronics (Rev. A) PDF | HTML Aug 5, 2025
Product overview NIST Traceability for Temperature and Humidity Sensors PDF | HTML Apr 15, 2025

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