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DAC8741H Datasheet Low-power Modems

Manufacturer: Texas Instruments

Overview: Product Folder Order Now Technical Documents Tools & Software Support & Community DAC8740H, DAC8741H SBAS856D – JUNE 2017 – REVISED MAY 2019 DAC874xH HART® and FOUNDATION Fieldbus™ and PROFIBUS PA Modems.

This datasheet includes multiple variants, all published together in a single manufacturer document.

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.

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.

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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