TIDA-00824

Human Skin Temperature Sensing for Wearable Applications Reference Design

TIDA-00824

Design files

Overview

TIDA-00824 features LMT70 analog temperature sensor for measuring human skin temperature. This reference design shows how to mechanically mount the temperature sensor for best thermal conductivity. Signal path considerations on how to achieve greater than 0.1°C accuracy is also discussed in this design.

Features
  • How to use LMT70 temperature sensor to measure human skin temperature
  • Ideal signal path components to achieve high thermal accuracy
  • Layout considerations for routing thermal paths
  • Mechanical case example for ideal mounting considerations

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAY7.PDF (1731 K)

Reference design overview and verified performance test data

TIDRIG2.ZIP (189 K)

Detailed schematic diagram for design layout and components

TIDRIG3.PDF (196 K)

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

TIDRIG4.ZIP (73 K)

Detailed overview of design layout for component placement

TIDRIG6.ZIP (518 K)

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

TIDCBA9.ZIP (3370 K)

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

TIDRIG5.ZIP (305 K)

PCB layer plot file used for generating PCB design layout

Products

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 document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430G255316 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer

Data sheet document-pdfAcrobat PDF
Precision ADCs (<=10MSPS)

ADS111516-bit, 860-SPS, 4-channel, delta-sigma ADC with PGA, oscillator, VREF, comparator and I2C

Data sheet document-pdfAcrobat PDF open-in-new HTML

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Software

Firmware

Wearable Temperature Sensor Firmware – TIDCBB7.ZIP (744 K)

Technical documentation

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Type Title Date
* Design guide TIDA-00824 Test Results Oct. 21, 2015
More literature Wearable Temperature Sensor Firmware Oct. 27, 2015

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00452 Temperature Sensor for Wearable Devices Reference Design

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