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DAC8740H - low-power modems

General Description

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.

Key Features

  • 1 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.

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Full PDF Text Transcription for DAC8740H (Reference)

Note: Below is a high-fidelity text extraction (approx. 800 characters) for DAC8740H. For precise diagrams, and layout, please refer to the original PDF.

Product Folder Order Now Technical Documents Tools & Software Support & Community DAC8740H, DAC8741H SBAS856D – JUNE 2017 – REVISED MAY 2019 DAC874xH HART® and FOUNDATION...

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SBAS856D – JUNE 2017 – REVISED MAY 2019 DAC874xH HART® and FOUNDATION Fieldbus™ and PROFIBUS PA Modems 1 Features •1 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 operati

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