Specifications
| Type | Description |
|---|---|
| Part Number | HDC3020 |
| Manufacturer | Texas Instruments |
| Product Type | Digital humidity and temperature sensor |
| Category | Sensors |
| Package / Case | WSON (8), 2.50 mm x 2.50 mm x 0.8 mm |
| Supply Voltage | 1.62 to 5.50 V; Operating supply range |
| Relative Humidity Operating Range | 0 to 100 %RH; Non-condensing |
| Temperature Sensor Operating Range | -40 to 125 °C; Operating free-air temperature |
| Relative Humidity Sensor Operating Temperature | -20 to 80 °C; Operating free-air temperature |
| Integrated Heater Operating Temperature | -40 to 60 °C; For condensation removal |
| Relative Humidity Accuracy | ±0.5 %RH typ, ±2.0 %RH max; TA=25°C, 10% to 50% RH |
| Relative Humidity Accuracy | ±1.0 %RH typ, ±2.0 %RH max; TA=25°C, 0% to 70% RH |
| Relative Humidity Accuracy | ±1.0 %RH typ, ±2.5 %RH max; TA=25°C, 10% to 80% RH |
| Relative Humidity Accuracy | ±1.5 %RH typ, ±3.0 %RH max; TA=25°C, 10% to 90% RH |
| Relative Humidity Accuracy | ±1.5 %RH typ, ±3.5 %RH max; TA=25°C, 0% to 100% RH |
| Relative Humidity Repeatability | ±0.02 %RH typ; Low Power Mode 0, lowest noise |
| Relative Humidity Repeatability | ±0.02 %RH typ; Low Power Mode 1 |
| Relative Humidity Repeatability | ±0.03 %RH typ; Low Power Mode 2 |
| Relative Humidity Repeatability | ±0.04 %RH typ; Low Power Mode 3, lowest power |
| Relative Humidity Hysteresis | ±0.8 %RH typ; 10% to 90% RH |
| Relative Humidity Response Time | 4 s typ; 10% to 90% RH step, t63% |
| Relative Humidity Long-Term Drift | 0.19 %RH/yr typ; Relative humidity sensor |
| Relative Humidity Supply Sensitivity | -10 min, 1.8 typ, 10 max m%RH/V; RH accuracy, VDD=1.8 V to 5.5 V |
| Temperature Accuracy | ±0.1 °C typ, ±0.2 °C max; 0°C ≤ TA ≤ 50°C |
| Temperature Accuracy | ±0.1 °C typ, ±0.3 °C max; -40°C ≤ TA ≤ 100°C |
| Temperature Accuracy | ±0.1 °C typ, ±0.4 °C max; -40°C ≤ TA < 125°C |
| Temperature Repeatability | ±0.04 °C typ; Low Power Mode 0, lowest noise |
| Temperature Repeatability | ±0.05 °C typ; Low Power Mode 1 |
| Temperature Repeatability | ±0.06 °C typ; Low Power Mode 2 |
| Temperature Repeatability | ±0.08 °C typ; Low Power Mode 3, lowest power |
| Temperature Response Time | 2 s typ; Stirred liquid, 25°C < TA < 75°C, t63% step, Rogers 4350B PCB 1.575 mm thickness |
| Temperature Long-Term Drift | ±0.03 °C/yr typ; Temperature sensor |
| Temperature Supply Sensitivity | -25 min, -5.7 typ, 25 max m°C/V; Temperature accuracy |
| Measurement Duration | 12.5 ms typ, 14.1 ms max; Low Power Mode 0, lowest noise |
| Measurement Duration | 7.5 ms typ, 8.4 ms max; Low Power Mode 1 |
| Measurement Duration | 5.0 ms typ, 5.7 ms max; Low Power Mode 2 |
| Measurement Duration | 3.7 ms typ, 4.2 ms max; Low Power Mode 3, lowest power |
| I2C Interface Speed | Up to 1 MHz; I2C-compatible interface |
| I2C Address Options | 4 selectable addresses: 0x44, 0x45, 0x46, 0x47; ADDR and ADDR1 pin configuration |
| Average Current | 0.4 µA typ; Low-power operation |
| Sleep Current | 0.4 µA typ; Trigger on demand mode |
| Sleep Current | 0.55 µA typ; Auto measure mode |
| Active Current | 99 µA typ; HDC302x active measurement |
| Average IDD | 0.7 µA typ; 1 Hz, trigger on demand |
| Average IDD | 0.9 µA typ; 1 Hz, auto measure |
| VDD Absolute Maximum Voltage | -0.3 to 6.0 V; Applied voltage on VDD pin |
| SCL Absolute Maximum Voltage | -0.3 to 6.0 V; Applied voltage on SCL pin |
| SDA Absolute Maximum Voltage | -0.3 to 6.0 V; Applied voltage on SDA pin |
| ADDR Absolute Maximum Voltage | -0.3 to 6.0 V; Applied voltage on ADDR pin |
| ADDR1 Absolute Maximum Voltage | -0.3 to VDD + 0.3 V; Applied voltage on ADDR1 pin |
| ALERT Absolute Maximum Voltage | -0.3 to VDD + 0.3 V; Applied voltage on ALERT pin |
| RESET Absolute Maximum Voltage | -0.3 to VDD + 0.3 V; Applied voltage on RESET pin |
| Junction Temperature | -55 to 150 °C; Absolute maximum rating |
| Storage Temperature | -65 to 150 °C; Absolute maximum rating |
| ESD Rating, HBM | ±2000 V; Human body model, ANSI/ESDA/JEDEC JS-001 |
| ESD Rating, CDM | ±750 V; Charged device model, JEDEC JS-002 |
| Junction-to-Ambient Thermal Resistance | 84.9 °C/W; DEF, DEH, DEJ WSON 8-pin package |
| Junction-to-Board Thermal Resistance | 52.0 °C/W; DEF, DEH, DEJ WSON 8-pin package |
| Junction-to-Board Characterization Parameter | 51.7 °C/W; DEF, DEH, DEJ WSON 8-pin package |
| Junction-to-Case Bottom Thermal Resistance | 30.4 °C/W; DEF, DEH, DEJ WSON 8-pin package |
| Low-Level Input Voltage | 0.3 x VDD max; SCL and SDA pins |
| High-Level Input Voltage | 0.7 x VDD min; SCL and SDA pins |
| Datasheet Status | request_only |
Product Overview
The HDC3020 is a Texas Instruments digital humidity and temperature sensor supplied in a compact WSON (8), 2.50 mm x 2.50 mm x 0.8 mm package. The operating supply range is 1.62 to 5.50 V, and the device provides an I2C-compatible interface rated up to 1 MHz.
Humidity measurement covers 0 to 100 %RH under non-condensing conditions. Relative humidity accuracy is specified across multiple ranges at TA=25°C, including ±0.5 %RH typical and ±2.0 %RH maximum from 10% to 50% RH, and ±1.5 %RH typical and ±3.5 %RH maximum from 0% to 100% RH. The relative humidity response time is 4 s typical for a 10% to 90% RH step at t63%.
Temperature sensing operates from -40 to 125 °C, with ±0.1 °C typical accuracy and maximum limits from ±0.2 °C to ±0.4 °C depending on temperature range. The sensor also provides low-power operating modes with measurement durations from 12.5 ms typical down to 3.7 ms typical, plus an integrated heater for condensation removal from -40 to 60 °C.
Key Features
- 1.62 to 5.50 V operating supply range
- 0 to 100 %RH non-condensing humidity range
- -40 to 125 °C temperature sensor operating range
- I2C-compatible interface supports up to 1 MHz
- Four selectable I2C addresses: 0x44 to 0x47
- 0.4 µA typical average current for low-power operation
- 99 µA typical active current during measurement
- Integrated heater operates from -40 to 60 °C
- Low Power Mode 3 measurement duration is 3.7 ms typical
- WSON 8-pin package measures 2.50 mm x 2.50 mm
Typical Applications
- Relative humidity measurement
- Temperature measurement
- Low-power sensor nodes
- I2C sensor interfaces
- Condensation removal using heater
- Trigger-on-demand measurement
- Auto-measure humidity sensing
Procurement Notes
When requesting a quote for HDC3020, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For memory and storage sourcing, density, organization, speed grade, voltage, package, temperature grade, date code, lifecycle status and original packing condition should be verified before approval.
FAQ
What supply voltage range does the HDC3020 support?
The HDC3020 operates from a 1.62 to 5.50 V supply range. Absolute maximum voltage on the VDD pin is specified from -0.3 to 6.0 V.
What humidity range is specified for the HDC3020?
The relative humidity operating range is 0 to 100 %RH under non-condensing conditions. At TA=25°C, humidity accuracy is specified across several ranges, including 0% to 100% RH.
What package is used for the HDC3020 sensor?
The HDC3020 is specified in a WSON 8-pin package measuring 2.50 mm x 2.50 mm x 0.8 mm. Thermal data is provided for DEF, DEH, and DEJ WSON 8-pin package variants.
What I2C interface options are available on HDC3020?
The device uses an I2C-compatible interface with speed up to 1 MHz. Four selectable I2C addresses are supported: 0x44, 0x45, 0x46, and 0x47, configured using the ADDR and ADDR1 pins.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 28, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.