Passive NFC Temperature Patch Reference Design


Design files


TIDA-00721 is a complete reference design for accurate temperature measurements using a passive NFC tag in a flexible patch form factor. The system offers temperature readings from tag to a NFC receiver such as a NFC enabled smartphone. The high accuracy temperature sensor (LMT70) is interfaced with an ADC (ADS1113) and the temperature data is sent to the reader with the NFC transponder (RF430CL330H).

  • Human skin temperature sensing patch design
  • Temperature data transfer with NFC interface
  • Integrated PCB antenna
  • Probe contacts for programming or troubleshooting

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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.


Reference design overview and verified performance test data

TIDRM48.PDF (202 K)

Detailed schematic diagram for design layout and components

TIDRM45.PDF (196 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRM44.ZIP (48 K)

Detailed overview of design layout for component placement

TIDRM46.ZIP (241 K)

Files used for 3D models or 2D drawings of IC components

TIDCC95.ZIP (396 K)

Design file that contains information on physical board layer of design PCB

TIDRM47.ZIP (242 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog temperature sensors

LMT700.1C analog temperature sensor, -5.19 mV/C, high-precision matched pairs, output enable pin

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G240316 MHz MCU with 8KB Flash, 512B SRAM, UART/SPI/I2C, timer

Data sheet: PDF | HTML
Other wireless products

RF430CL330HDynamic Dual Interface NFC Transponder

Data sheet: PDF | HTML
Precision ADCs

ADS111316-Bit 860SPS 1-Ch Delta-Sigma ADC With Oscillator, Voltage Reference, and I2C

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Design guide Passive NFC Temperature Patch Design Guide May 10, 2016

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