TIDA-010019 Reference Design

Texas Instruments

RTD replacement for cold junction compensation reference design in a temperature sensor

Description

Temperature-sensing applications that use a thermocouple (TC) require an accurate local temperature sensor to achieve high accuracy. Solutions for design challenges such as cold-junction compensation (CJC) or including an ultra-low power TC analog front-end are highlighted and addressed in this reference design. Performance in terms of power consumption and accuracy is optimized for accurate 4 to 20 mA sensors while also demonstrating the performance of different CJC and TC front-end implementations.

Features
  • Ultra-low power TC front end: RTD type performance with silicon temperature sensors16-bit ADC for 0.05 °C resolutionComparing different CJC solutionsTC temperature from -270 °C to 1200 °C
Applications
  • Weigh scale
  • Temperature transmitter
  • Aircraft cockpit display
  • Flight control system
  • In-flight entertainment
  • Special function module
  • Data acquisition (DAQ)
  • Appliances: battery charger
  • Temperature controller
Product Categories
  • Sensors