Software
Firmware
TIDA-00646
Matched Precision Temperature Sensing Reference Design for Heat Cost Allocators
TIDA-00646
Overview
The TIDA-00646 reference design demonstrates techniques for precision temperature sensing as required by heat cost llocators and other Internet of Things (IoT) applications. Heat cost allocators use the temperature differential between Room and Heater body to assign a share of the total cost of a central heating system among multiple users. TIDA-00646 achieves better than 0.5 degrees Celsius accuracy across a range of +20 to +85°C. The LMT70A CMOS sensors used in the design are available as matched pairs to eliminate the need for calibration during manufacturing, lowering OEM system cost. The design is compliant to the EN834 standard using the “two-sensor measurement method”.
Features
- Highly accurate temperature sensing across environment conditions: better than 0.5 degrees from +20 to +85degC
- Matching of two adjacent LMT70A sensors on Tape and Reel saves test and manufacturing cost
- CC1310 SimpleLink(TM) wireless MCU provides single-chip solution for heat measurement and RF communications
- Low power operation down to 2.0V extends battery lifetime
- Cost-optimized two-layer PCB layout in HCA form factor
Industrial
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.
TIDUB32.PDF (2968 K)
Reference design overview and verified performance test data
TIDUAY7.PDF (1731 K)
Reference design overview and verified performance test data
TIDRJ75.PDF (465 K)
Detailed schematic diagram for design layout and components
TIDRJ86.PDF (98 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRJ87.PDF (224 K)
Detailed overview of design layout for component placement
TIDRJ90.ZIP (986 K)
Files used for 3D models or 2D drawings of IC components
TIDCBJ4.ZIP (587 K)
Design file that contains information on physical board layer of design PCB
TIDRJ88.PDF (1150 K)
PCB layer plot file used for generating PCB design layout
TIDRJ89.PDF (2218 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 | Matched Precision Temperature Sensing for Heat Cost Allocators Design Guide | Nov. 18, 2015 | |
| Application note | Wearable Temp-Sensing Layout Considerations Optimized for Thermal Response (Rev. B) | Oct. 23, 2018 | ||
| Design guide | TIDA-00824 Test Results | Oct. 21, 2015 |
Related design resources
Reference designs
REFERENCE DESIGN
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