Simple thermocouple measurement reference design: less than 1°C accuracy
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.See more TI Precision Designs
Features
- Measures K-type theromcouple temperatureAccuracy Precision/Repeatability 0.2 °CIncludes cold junction compensationIncludes software algorithmUses ADS1118 16-bit ADC with PGA This Verified Design Includes:TheoryComponent SelectionTINA-TI SimulationSchematics and PCB LayoutVerification and Measured PerformanceModification Options
Applications
- Communication switch
- Mixed module (AI
- AO
- DI
- DO)
- CT & PET scanner
- X-ray systems
Product Categories
- Data converters
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Design File
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Download the design file for TIPD109Test Data
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Download the test file for TIPD109| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIPD109 Gerber | 20 Sep 2013 | ZIP | 281 | |
| TIPD109 BOM | 20 Sep 2013 | 65 | ||
| TIPD109 Schematic | 20 Sep 2013 | 54 |