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HDC3120 High-Accuracy (0.5%RH, 0.2°C) Analog Humidity and Temperature Sensor, With Low Long-Term Drift (0.19%RH/yr), and 4s RH% Response
SNAS758
February 2025
HDC3120
ADVANCE INFORMATION
CONTENTS
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HDC3120 High-Accuracy (0.5%RH, 0.2°C) Analog Humidity and Temperature Sensor, With Low Long-Term Drift (0.19%RH/yr), and 4s RH% Response
1
1
Features
2
Applications
3
Description
4
Device Comparison
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Device Power-Up and Power-On Reset
7.3.2
Device Disable and Enable
7.3.3
Conversion of the Signal Output
7.3.3.1
Relative Humidity (RH%) Measurement
7.3.3.2
Temperature Measurement
7.3.4
NIST Traceability and Unique ID
7.4
Device Functional Modes
7.4.1
On-Chip Heater
7.4.1.1
Operating Principle
7.4.1.2
Application Examples
7.4.1.3
Heater Control
7.4.1.4
Heater Power Estimate
7.4.1.5
Usage Considerations
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
8.5
Storage and PCB Assembly
8.5.1
Storage and Handling
8.5.2
Product Storage
8.5.3
PCB Assembly Flow
8.5.4
Rework Consideration
8.5.5
Rehydration
8.5.6
Sensitivity to Chemicals and Vapors
8.5.7
Exposure to High Temperature and High Humidity Conditions
8.5.8
Recovering Sensor Performance: Bake & ReHydration Procedure
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
11.1
Package Option Addendum
11.2
Tape and Reel Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DEF|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information
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Data Sheet
HDC3120
High-Accuracy (0.5%RH, 0.2°C) Analog Humidity and Temperature Sensor, With Low Long-Term Drift (0.19%RH/yr), and 4s RH% Response