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HDC3120-Q1

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Automotive ±0.5% RH accurate analog-output humidity sensor

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HDC3120-Q1

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 Automotive
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 Automotive
WSON (DEF) 8 6.25 mm² (2.5 mm × 2.5 mm)
  • AEC-Q100 qualified for automotive applications
    • Temperature Grade 1: –40°C to 125°C
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4
  • Functional Safety-Capable
  • 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
  • AEC-Q100 qualified for automotive applications
    • Temperature Grade 1: –40°C to 125°C
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4
  • Functional Safety-Capable
  • 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-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 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-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.

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 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-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.
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* Data sheet HDC3120-Q1 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
Functional safety information HDC3120-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML Apr 14, 2025

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