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Texas Instruments RHA0040B | Demoboard TIDA-00168
Thermocouple AFE Using RTD or Integrated Temperature Sensor for Cold Junction Compensation (CJC)
Details
| Topologie | Sonstige Topologie |
| IC-Revision | E1 |
Beschreibung
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.
Eigenschaften
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 Surge
Field Transmitter operating temperature range of –40°C to 85°C
REMARK: Schematic and BOM is added
Typische Anwendungen
- Level Transmitter
