Precision temperature sensing circuit design based on CC1310 and LMT70A combination

TIDA-00646 Reference Design includes technologies that apply to high precision temperature sensing required for thermal distribution tables and other Internet of Things (IoT) applications. The thermal allocation table uses the temperature difference between the room and the heating device to allocate the total cost of the central heating system between multiple users. TIDA-00646 can achieve a precision higher than 0.5 ° C within the range of +20 to + 85 ° C. The LMT70A CMOS sensor used in the design is provided in a pair (mutually matching) manner, so that there is no need to calibrate during the manufacturing process, thereby reducing the OEM system cost. This design conforms to the EN834 standard (using the "Dual Sensor Measurement Method"). Characteristic High precision temperature sensing higher than 0.5 ° C under environmental conditions of +20 to + 85 ° C Two adjacent LMT70A sensors in the tape package match each other, saving testing and manufacturing costs CC1310 SimpleLink (TM) Wireless MCU provides single-chip solutions for thermal metering and RF communications Low-power operation as low as 2.0V can extend battery life Cost optimization double-layer PCB layout with HCA profile

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