Product details

Relative humidity accuracy (typ) (%RH) 0.5 Temperature accuracy (typ) (°C) 0.1 Relative humidity operating range (typ) (%RH) 0 to 100 Supply voltage (min) (V) 1.62 Supply voltage (max) (V) 5.5 Average supply current (typ) (A) 0.0000004 Operating temperature range (°C) -40 to 125 Interface type I2C Rating Automotive
Relative humidity accuracy (typ) (%RH) 0.5 Temperature accuracy (typ) (°C) 0.1 Relative humidity operating range (typ) (%RH) 0 to 100 Supply voltage (min) (V) 1.62 Supply voltage (max) (V) 5.5 Average supply current (typ) (A) 0.0000004 Operating temperature range (°C) -40 to 125 Interface type I2C Rating Automotive
WSON (DEF) 8 6.25 mm² 2.5 x 2.5
  • 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%
    • Accuracy: ±0.5% typical
    • Offset Error Correction: reduces offset to return device to within accuracy specification
    • Long-term drift: 0.19%RH/yr
    • Condensation protection with integrated heater
  • Temperature sensor:
    • Operating range: –40°C to 125°C
    • Accuracy: ±0.1°C typical
  • NIST traceability: relative humidity & temperature
  • Low power: average current 0.4 µA
  • I 2C interface compatibility up to 1-MHz speeds
    • Four selectable I 2C addresses
    • Data protection through CRC checksum
  • Supply voltage: 1.62 V to 5.50 V
  • Available auto measurement mode
  • Programmable interrupts
  • Programmable RH and Temp measurement offset
  • Factory-installed polyimide tape assembly cover
  • Factory-installed IP67 rated environmental cover
  • WSON package with wettable flanks options
  • 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%
    • Accuracy: ±0.5% typical
    • Offset Error Correction: reduces offset to return device to within accuracy specification
    • Long-term drift: 0.19%RH/yr
    • Condensation protection with integrated heater
  • Temperature sensor:
    • Operating range: –40°C to 125°C
    • Accuracy: ±0.1°C typical
  • NIST traceability: relative humidity & temperature
  • Low power: average current 0.4 µA
  • I 2C interface compatibility up to 1-MHz speeds
    • Four selectable I 2C addresses
    • Data protection through CRC checksum
  • Supply voltage: 1.62 V to 5.50 V
  • Available auto measurement mode
  • Programmable interrupts
  • Programmable RH and Temp measurement offset
  • Factory-installed polyimide tape assembly cover
  • Factory-installed IP67 rated environmental cover
  • WSON package with wettable flanks options

The HDC302x-Q1 is an integrated capacitive based relative humidity (RH) and temperature sensor. The device provides high accuracy measurements over a wide supply range (1.62 V – 5.5 V), along with ultra-low power consumption in a compact 2.5-mm × 2.5-mm package. Both the temperature and humidity sensors are 100% tested and trimmed on a production setup that is NIST traceable and verified with equipment that is calibrated to ISO/IEC 17025 standards.

Offset Error Correction reduces RH sensor offset due to aging, exposure to extreme operating conditions, and contaminants to return device to within accuracy specifications. For battery IoT applications, auto measurement mode and ALERT feature enable low system power by maximizing MCU sleep time. There are four different I 2C addresses that support speeds up to 1 MHz. A heating element is available to dissipate condensation and moisture.

The HDC3020 -Q1 is an open cavity package without protective cover. Two device variants have a cover option to protect the open cavity RH sensor: HDC3021 -Q1 and HDC3022 -Q1. HDC3021 -Q1 has removable protective tape to allow conformal coatings and PCB wash. HDC3022 -Q1 has a permanent IP67 filter membrane to protect against dust, water and PCB wash. All three package variants have wettable flanks option.

The HDC302x-Q1 is an integrated capacitive based relative humidity (RH) and temperature sensor. The device provides high accuracy measurements over a wide supply range (1.62 V – 5.5 V), along with ultra-low power consumption in a compact 2.5-mm × 2.5-mm package. Both the temperature and humidity sensors are 100% tested and trimmed on a production setup that is NIST traceable and verified with equipment that is calibrated to ISO/IEC 17025 standards.

Offset Error Correction reduces RH sensor offset due to aging, exposure to extreme operating conditions, and contaminants to return device to within accuracy specifications. For battery IoT applications, auto measurement mode and ALERT feature enable low system power by maximizing MCU sleep time. There are four different I 2C addresses that support speeds up to 1 MHz. A heating element is available to dissipate condensation and moisture.

The HDC3020 -Q1 is an open cavity package without protective cover. Two device variants have a cover option to protect the open cavity RH sensor: HDC3021 -Q1 and HDC3022 -Q1. HDC3021 -Q1 has removable protective tape to allow conformal coatings and PCB wash. HDC3022 -Q1 has a permanent IP67 filter membrane to protect against dust, water and PCB wash. All three package variants have wettable flanks option.

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Technical documentation

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Type Title Date
* Data sheet HDC302x-Q1 Automotive 0.5%RH Digital Relative Humidity Sensor, 0.19%RH/yr Long Term Drift, 4s Response, Offset Error Correction, 0.1°C Temperature Sensor datasheet (Rev. C) PDF | HTML 24 Mar 2023
* User guide HDC302x Silicon Users Guide (Rev. C) PDF | HTML 13 Jul 2023
Application brief How TI Humidity Sensors Remove Device Condensation Using On-Chip Heaters PDF | HTML 10 Feb 2023
Application brief Using RH to Derive Vapor Pressure, Dew Point, Absolute Humidity, and Enthalpy PDF | HTML 09 Feb 2023
Functional safety information HDC3020-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 16 Aug 2022
Technical article Achieving accurate temperature and humidity sensing in ADAS sensor modules PDF | HTML 28 Jan 2022
Application brief Improving System Reliability in Auto and Ind. Cameras w/ AccurateTemp. Sensing PDF | HTML 03 Jan 2022
White paper 85°C/85% RH Accelerated Life Test Impact on Humidity Sensors (Rev. A) PDF | HTML 07 Sep 2021
Application brief Leveraging Relative Humidity Sensor Enhanced Features for Ultra-Low-Power System (Rev. A) PDF | HTML 01 Sep 2021
Application brief How the HDC3020 Humidity Sensor Family Achieves The Industry's Lowest Drift (Rev. A) PDF | HTML 31 Aug 2021
Technical article Why long-term consistent performance matters for relative humidity sensors PDF | HTML 21 Jun 2021
Technical article Interface to sensors in seconds with ASC Studio PDF | HTML 12 Nov 2020

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

HDC3020EVM — HDC3020 evaluation module for temperature and humidity sensors

The HDC3020EVM evaluation module (EVM) enables designers to evaluate the operation and performance of the HDC3020 relative humidity and temperature sensor. The EVM hosts an MSP430F5528 microcontroller (µC) as well as the HDC3020. The µC is used to control the HDC3020 and communicate (...)

User guide: PDF | HTML
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