Thermocouple AFE Using RTD or Integrated Temperature Sensor for Cold Junction Compensation (CJC)
Description
The sole objective of this reference design is to provide comprehensive details on how to design a simple: robust: and accurate analog front end (AFE) circuit for making precision temperature measurements with thermocouple sensors. TIDA-00168 explains the theory: operation: and complications involved in a step-by-step manner. Additionally: this reference design emphasizes topics like error analysis: the necessity of an anti-aliasing filter: biasing resistors for sensor diagnostics: CJC: linearization technique for sensor data: and the design challenges of printed circuit boards.
Features
- Sensor input: K-Type thermocouple Thermocouple Temperature range of –200 °C to 1372 °C Noise free resolution: 0.02ºC Cold Junction Compensation (CJC) using Resistance Temperature Detector (RTD) or the internal temperature sensor of the ADS1220 Designed to meet IEC61000-4 Standards:Electrical Fast Transients (EFTs): Electrostatic Discharge (ESD): and SurgeField Transmitter operating temperature range of –40 °C to 85 °C
Applications
- Temperature transmitter
- Analog input module
- Mixed module (AI
- AO
- DI
- DO)
- Temperature controller
- Flow transmitter
- Injection molding machine
Product Categories
- Data converters
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| Download the bill of materials for TIDA-00168 | Download |
Test Data
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Download the test file for TIDA-00168| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00168 Gerber | 24 Nov 2014 | ZIP | 1690 | |
| TIDA-00168 Altium | 24 Nov 2014 | ZIP | 10039 | |
| TIDA-00168 PCB | 24 Nov 2014 | 1685 | ||
| TIDA-00168 Assembly Drawing | 24 Nov 2014 | 331 | ||
| TIDA-00168 BOM | 24 Nov 2014 | 196 | ||
| TIDA-00168 Schematic and Block Diagram | 24 Nov 2014 | 559 |