SNAU265D June   2021  – February 2025 HDC3020 , HDC3020-Q1 , HDC3021 , HDC3021-Q1 , HDC3022 , HDC3022-Q1 , HDC3120 , HDC3120-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1HDC3x Devices
    1. 1.1 HDC3x2x Package Comparison
    2. 1.2 HDC3020 in WSON
    3. 1.3 HDC3021 in WSON
    4. 1.4 HDC3022 in WSON
    5.     HDC3120 in WSON
  5. 2Storage and Handling Guidelines
    1. 2.1 Exposure to Contaminants
    2. 2.2 Chemical Analysis
      1. 2.2.1 Saturation and Recovery Tests
      2. 2.2.2 Long-Term Exposure
    3. 2.3 Packaging and Storing
      1. 2.3.1 Assembly
      2. 2.3.2 Application in Extreme Environment
  6. 3Programming the HDC3020
    1. 3.1 The Functional Modes
    2. 3.2 Trigger-On Demand
    3. 3.3 Auto Measurement
    4. 3.4 Programming the CRC
      1. 3.4.1 CRC C Code
    5. 3.5 Example Code
    6. 3.6 Condensation Removal
    7. 3.7 Offset Error Correction
      1. 3.7.1 Offset Error Correction Example With a Fingerboard
  7. 4References
  8. 5Revision History

1 HDC3x Devices

Table 1-1 TI Humidity Sensors Comparison Table
HDC3020 HDC3021 HDC3022 HDC2010 HDC2080 HDC2021 HDC2022
Best Accuracy, NIST, Best 85°C/85% RH Performance Smallest and Lower Cost Lowest Power

Interface; Address Count

I2C, 4

I2C, 2
VCC range 1.62V - 5.5V 1.62V-3.6V
Operating Temperature -40°C - 125°C -40°C-85°C -40°C-125°C
RH Accuracy (typ/max) ±0.5%/±2.0% @ 10%-50% RH
±1.0%/±2.0% @ 10%-70% RH
±1.0%/±2.5% @ 10%-80% RH
±1.5%/±3.0% @ 10%-90% RH		 ±2%/±3% @20%-80% RH
RH Drift Correction √ -
RH Repeatability ±0.02%RH low-power mode 0 (lowest noise) ±0.1%RH 14-bit resolution
RH LTD (typ) ±0.19%RH/yr ±0.25 %RH/yr
RH Response Time (typ) 4 sec 8 sec
Temp Accuracy (typ/max) ±0.1°C/±0.2°C (0°C-50°C)
±0.1°C/±0.3°C (-40°C-100°C)
±0.1°C/±0.4°C (-40°C-125°C)		 ±0.2°C/±0.4°C (15°C-45°C) ±0.2°C/±0.4°C (10°C-35°C)
±0.2°C/±0.7°C (5°C-60°C)
Sleep Current (typ/max) 0.36μA/14.5μA (On Demand) 0.55μA/15μA (Auto) 0.05μA/0.10μA
Active IDD (typ/max) 99μA/153μA 650μA/890μA
Typ Avg IDD (1 sample/sec) 0.7μA (On Demand)/0.9 μA (Auto Measurement) 0.55μA
NIST Traceability Yes, both humidity and temperature -
Package WSON-8 2.5mm × 2.5mm DSBGA (6 pump) 1.5mm × 1.5mm) WSON-6 3.0mm × 3.0mm
Sensor Cavity Protection HDC3020 Removable protective tape
HDC3020 		Permanent IP67 filter cover
HDC3020 		HDC3020 HDC3020 Removable protective tape
HDC3020 		Permanent IP67 filter
HDC3020

For more details on the HDC2x generation of humidity sensors, see the HDC20XX Silicon Users Guide.