Software
Firmware
TIDA-00972
±2% Accurate Humidity Sensing Reference Design Supporting Robust 2m Wire Communication
TIDA-00972
Overview
The TIDA-00972 reference design provides a sensor module level solution for +/- 2% of accuracy and reliable Relative Humidity (RH) and +/- 0.2 °C accuracy temperature sensing. The sensor module utilizes TI’s digital humidity and temperature sensor HDC1080 together with integrated communication bus buffer TCA9517 to provide high accuracy sensing result with robust communication over meters of wiring distance.
The reference design addresses the key considerations during development and manufacturing of the sensor module with test results.
Features
- Relative humidity accuracy ±2%, temperature accuracy ±0.2°C
- Small form factor of PCB size 15.7 mm x 7.6 mm
- Very low power consumption during operation and when idle: 1.2uA without I2C buffer. Supply cut during idle.
- Supports long-cable I2C communication over common wire (AWG24 with 2 meter length)
- Supports both 5V and 3.3V power supply
Industrial
- Air Circuit Breaker (ACB)
- Air conditioner outdoor unit
- Air purifier & humidifier
- Aircraft cockpit display
- Analytical lab instrumentation
- Automotive interface & communications HIL tester
- CPAP machine
- Cooker hood
- Cordless vacuum cleaner
- Dishwasher
- Interconnect/distribution box
- Near infrared (NIR) spectrometer - benchtop
- Oscilloscope (DSO) - benchtop
- Oscilloscope (DSO) - modular
- Oven
- Refrigerator & freezer
- Residential & living fan
- Source measurement unit (SMU)
- Washer & dryer
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUBL7A.PDF (6475 K)
Reference design overview and verified performance test data
TIDRMH4.PDF (155 K)
Detailed schematic diagram for design layout and components
TIDRMH5.PDF (170 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRMH6.PDF (64 K)
Detailed overview of design layout for component placement
TIDRMH8.ZIP (174 K)
Files used for 3D models or 2D drawings of IC components
TIDCCC5.ZIP (166 K)
Design file that contains information on physical board layer of design PCB
TIDRMH7.PDF (239 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
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Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | ±2% Accurate Humidity-Sensing Reference Design Supporting 2-m Wire Communication (Rev. A) | Nov. 09, 2016 |
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