TIDA-011026
Field transmitter platform, 4mA to 20mA 3-wire interface reference design
TIDA-011026
概覽
This reference design gives an example implementation of a 4–20mA interface for 3-wire voltage and current interface sensors. The design enables evaluation of the XTR200 alongside the current loop protector TPS2661. The XTR200 integrates the output drive circuitry for voltage and current field transmitter communication interfaces with standard industrial signal levels such as 4-20mA, 0-20mA, and 0-10V. The reference design provides access over a pin header to a pulse-width modulated (PWM) interface that drives the output stage. This pin header also provides 3.3V to power a connected microcontroller.
特點
- Implementation of 4-20mA loop interface for 3-wire sensor
- Low-pass filter circuit to drive output stage via MCU PWM
- Integrated current loop protection and miswiring protection
- Adaptive power circuit to maximize power efficiency
- MCU interface providing power output (3.3V), SPI
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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| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 設計指南 | Field Transmitter Platform: Three-Wire 4mA to 20mA Interface Reference Design | PDF | HTML | 2026/7/15 |