DAC8740H
- HART-compliant physical layer modem
- 1200-Hz, 2200-Hz HART FSK sinusoids
- Register programmable amplitude of TX signals (DAC8741H only)
- Integrated RX demodulator and band-pass filter with minimal external components
- FOUNDATION Fieldbus compatible H1 controller and medium attachment unit (MAU)
- 31.25 kbit/s communication based on Manchester-coded bus powered (MBP)
- Integrated Manchester encoder and decoder
- Compatible with PROFIBUS PA
- Low quiescent current: 180 µA max at typical industrial operating temperature range (–40°C to +85°C)
- Integrated 1.5-V reference
- Flexible clocking options
- Internal oscillator
- External crystal oscillator
- External CMOS clock
- Digital interface
- DAC8740H: UART
- DAC8741H: SPI
- Reliability: CRC bit error checking, watchdog timer (DAC8741H only)
- Wide operating temperature: –55°C to +125°C
- 4-mm × 4-mm QFN package
The DAC8740H and DAC8741H (DAC874xH) are HART®, FOUNDATION Fieldbus™, and PROFIBUS PA compatible low-power modems designed for industrial process control and industrial-automation applications.
In HART mode, the DAC874xH integrates all of the required circuitry to operate as half-duplex HART physical layer modems, in either slave or master configurations with minimal external components for filtering. In FOUNDATION Fieldbus mode, the DAC874xH integrates all of the required circuitry to operate as half-duplex FOUNDATION Fieldbus compatible H1 controllers and MAUs.
The HART, FOUNDATION Fieldbus, or PROFIBUS PA, data stream can be transferred from the microcontroller through either a UART interface or an integrated FIFO accessed by a SPI interface. The SPI interface includes an SDO pin for daisy-chain support, various interrupts, and other extended features.
技術文件
設計與開發
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DAC8742HEVM — DAC8742H 評估模組
DAC8742H 評估模組 (EVM) 是一款易於使用的平台,用於評估 DAC8742H 裝置的功能與性能。DAC8740H、DAC8741H 和 DAC8742H 是符合 HART®、FOUNDATION Fieldbus™ 與 PROFIBUS PA 標準的低功耗數據機,專為工業製程控制與工業自動化應用設計。DAC8742HEVM 是一套完整的評估套件,包含 USB2ANY 與評估軟體,支援 Microsoft Windows® XP 及 Windows® 7/8/10 作業系統。
ANALOG-ENGINEER-CALC — 類比工程師計算機
除了作為獨立工具使用外,此計算機還與類比工程師口袋參考中描述的概念相得益彰。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前,建立完整的終端設備設計和解決方案原型,進而縮短上市時間並降低開發成本。
在 PSpice for TI 設計與模擬工具中,您可以搜尋 TI (...)
TINA-TI — 基於 SPICE 的類比模擬程式
TIDA-01504 — 配備 HART® 數據機的高準確度、迴路供電、4mA 至 20mA 現場傳送器參考設計
TIDA-060020 — 啓用 HART 的 PLC 類比輸入模組參考設計
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。