TIDA-00168
使用 RTD 或整合式溫度感測器進行冷接點補償 (CJC) 的熱電偶 AFE
TIDA-00168
概覽
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.
特點
- 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
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| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | Thermocouple AFE Using RTD and Internal Temperature Sensor of ADS1220 for CJC | 2014/11/16 |