DAC8740H Description
The DAC8740H and DAC8741H (DAC874xH) are HART®, FOUNDATION Fieldbus™, and PROFIBUS PA patible 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 ponents for filtering. In FOUNDATION...
DAC8740H Key Features
- 1 HART-pliant 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 ponents
- FOUNDATION Fieldbus patible H1 controller and medium attachment unit (MAU)
- 31.25 kbit/s munication based on Manchester-coded bus powered (MBP)
- Integrated Manchester encoder and decoder
- patible 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