View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.
- Matched Precision Temperature Sensing for Heat Cost Allocators Design Guide
(PDF 2968 KB)
18 Nov 2015 163 views
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”.
- 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