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HDC3020

ACTIVE

0.5% RH digital humidity sensor, 0.19% long-term drift, 400 nA, 4-sec response time, NIST traceable

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HDC3020

ACTIVE
Data sheet Order now

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) (µA) 0.4 Operating temperature range (°C) -40 to 125 Interface type I2C Rating Catalog
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) (µA) 0.4 Operating temperature range (°C) -40 to 125 Interface type I2C Rating Catalog
WSON (DEF) 8 6.25 mm² 2.5 x 2.5
  • 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
    • Long-term drift: ±0.03°C/yr
  • NIST traceability: relative humidity & temperature

  • Output Short Circuit Protection

  • Low power: average current 0.4µA
  • I2C interface compatibility up to 1MHz speeds
    • Four selectable I2C addresses
    • Data protection through CRC checksum
  • Supply voltage: 1.62V to 5.50V
  • Available auto measurement mode
  • Programmable interrupts
  • Programmable RH and Temp measurement offset
  • Factory-installed polyimide tape assembly cover
  • Factory-installed IP67 rated environmental cover
  • 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
    • Long-term drift: ±0.03°C/yr
  • NIST traceability: relative humidity & temperature

  • Output Short Circuit Protection

  • Low power: average current 0.4µA
  • I2C interface compatibility up to 1MHz speeds
    • Four selectable I2C addresses
    • Data protection through CRC checksum
  • Supply voltage: 1.62V to 5.50V
  • Available auto measurement mode
  • Programmable interrupts
  • Programmable RH and Temp measurement offset
  • Factory-installed polyimide tape assembly cover
  • Factory-installed IP67 rated environmental cover

The HDC302x is an integrated, capacitive based relative humidity (RH) and temperature sensor . The device provides high accuracy measurements over a wide supply range (1.62V – 5.5V) and ultra low power consumption in a compact 2.5mm × 2.5mm × 0.8mm WSON 8-pin 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 I2C addresses that support speeds up to 1MHz. A heater is available to dissipate condensation and moisture.

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

The HDC302x is an integrated, capacitive based relative humidity (RH) and temperature sensor . The device provides high accuracy measurements over a wide supply range (1.62V – 5.5V) and ultra low power consumption in a compact 2.5mm × 2.5mm × 0.8mm WSON 8-pin 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 I2C addresses that support speeds up to 1MHz. A heater is available to dissipate condensation and moisture.

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

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Technical documentation

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Type Title Date
* Data sheet HDC302x 0.5%RH Digital Relative Humidity Sensor, 0.19%RH/yr Long Term Drift, 4s Response, Low-Power, Offset Error Correction, 0.1°C Temperature Sensor datasheet (Rev. D) PDF | HTML 24 Jul 2024
* User guide HDC302x Silicon Users Guide (Rev. D) PDF | HTML 18 Feb 2025
Product overview Humidity Sensor Comparison Guide PDF | HTML 02 Jan 2026
Application note TI Humidity Sensors: Programming & Integration Guide PDF | HTML 03 Nov 2025
Application note How to Debug RH Accuracy Issues in RH Sensors PDF | HTML 30 Oct 2025
Application note Humidity Sensor-Based Water Ingress Monitoring for Automotive Electronics (Rev. A) PDF | HTML 05 Aug 2025
Product overview NIST Traceability for Temperature and Humidity Sensors PDF | HTML 15 Apr 2025
Application brief Leak Detection, Flow, and Pressure Monitoring in Liquid-Cooled Server Cards and Coolant Distribution Units PDF | HTML 09 Oct 2024
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
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
Technical article Understanding tamper detection sensors PDF | HTML 18 Nov 2019

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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Evaluation board

HDC3020FLXEVM — HDC3020 flexible printed circuit evaluation module

The HDC3020FLXEVM is a flexible printed circuit (FPC) based breakout sensor board. It enables users to evaluate the performance of the HDC3020 digital relative humidity (RH) and temperature sensor on a compact and easy-to-use circuit board.
User guide: PDF | HTML
Not available on TI.com
IDE, configuration, compiler or debugger

ASC-STUDIO-HDC3020 — ASC studio for configuring all aspects of the HDC3020 humidity sensor

SysConfig can be used to help simplify configuration challenges and accelerate software development with the HDC3020 humidity sensor.
Supported products & hardware

Supported products & hardware

Products
Humidity sensors
  • HDC3020 — 0.5% RH digital humidity sensor, 0.19% long-term drift, 400 nA, 4-sec response time, NIST traceable
Launch
Reference designs

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This industrial reference design demonstrates the use of a battery powered IWRL6432 60-GHz mmWave radar with a sub-1 GHz or Bluetooth® 5.2 wireless communication. This design has been demonstrated with people-counting and tracking, and motion tracking applications from a Li-battery that send (...)
Design guide: PDF
Reference designs

TIDA-010253 — Battery control unit reference design for energy storage systems

This reference design is a central controller for a high-voltage Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery rack. This design provides driving circuits for high-voltage relay, communication interfaces, (including RS-485, controller area network (CAN), daisy chain, and Ethernet), (...)
Design guide: PDF
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WSON (DEF) 8 Ultra Librarian
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