TIPD202
類比線性化 3 線 PT1000 RTD 至 2 線 4-20mA 電流迴路發送器參考設計
TIPD202
概覽
This design features a single-chip solution to linearize and transmit a 3-wire PT1000 RTD over the industry standard 2-wire 4-20mA current loop. The design was configured for a -50°C to 250°C temperature range, but other temperature ranges can be achieved by adjusting the component values as discussed in the Theory of Operation section of the reference design guide. Unadjusted design accuracy was measured to be less than 0.15°C over the selected RTD temperature span.
特點
- Input: 3-Wire PT1000 RTD
- RTD Temperature Range: -50°C to 250°C
- Output: 2-Wire 4-20mA Current Loop
- Includes analog RTD sensor linearization for >40x linearity improvement over end-point fit
- Reference design includes theory, calculated error analysis, component selection, PCB layout, and measured results
已開發完全組裝的電路板，僅供測試與性能驗證，且為非賣品。
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| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | Analog 3-Wire PT1000 RTD to 2-Wire 4-20mA Current Loop Transmitter Design Guide | 2015/11/9 |