Cart Simple Thermocouple Measurement Solution Reference Design, <1°C Accurate
(ACTIVE) TIPD109
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Description
This thermocouple measurement verified design provides a very simple and accurate method way to implement thermocouple measurement. This design outlines the necessary anti-aliasing filters and biasing resistors to provide sensor diagnostics. This example also provides a novel way of accomplishing cold junction compensation for the system using the onboard temperature sensor on the ADS1118. For thermocouple linearization, the design also provides a very simple algorithm for linear that can be implemented on most microcontrollers.
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Features
- Measures K-type theromcouple temperature
- Accuracy <1 °C
- Precision/Repeatability 0.2°C
- Includes cold junction compensation
- Includes software algorithm
- Uses ADS1118 16-bit ADC with PGA
- Theory
- Component Selection
- TINA-TI Simulation
- Schematics and PCB Layout
- Verification and Measured Performance
- Modification Options
