TIDA-00483
採用單電流迴路和 FSK 調變的雙路感測器量測參考設計
TIDA-00483
概覽
The TIDA-00483 reference design demonstrates a 4-20mA current loop subsystem capable of measuring the surrounding environment and communicating the temperature, humidity, and ambient light over the loop. The small footprint of the design contains all sensors, filters, and control circuitry to calculate and communicate the sensor data. The reference design is intended for process measurement applications in factory automation, field transmitters and building automation. The sensors, MCU and communication modules all run from the current loop power, requiring less than 3.5 mA.
特點
- Reduce cabling and installation cost by transmitting two variable parameters simultaneously on a 4-20mA current loop
- Expandable to additional sensor parameters via FSK-modulated digital data stream
- Dual op-amp 4th order Butterworth filter for FSK generation reduces BOM count
- Ultra Low power MSP430 consumes less of the 3.5 mA budget allowing more current for sensors in the loop
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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設計檔案
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產品
設計與潛在替代方案中包括 TI 產品。
MSP430 microcontrollers
MSP430FR5969 — 具 64KB FRAM、2KB SRAM、AES、12 位元 ADC、比較器、DMA、UART/SPI/I2C、定時器的 16 MHz MCU
開始開發
支援軟體
The design resource accessed as www.ti.com/lit/zip/tidcbc7 or www.ti.com/lit/xx/tidcbc7/tidcbc7.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDCBC7. Please update any bookmarks accordingly.
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| 類型 | 標題 | 下載最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| * | 設計指南 | Dual Sensor Measurement Using Single Current-Loop Design Guide | 2015/8/26 |