DESCRIPTION
The TERIDIAN 73M1903C Analog Front End (AFE) IC includes fully differential hybrid driver outputs, which connect to the telephone line interface through a transformer-based DAA. The receive pins are also fully differential for maximum flexibility and performance. This arrangement allows for the design of a high performance hybrid circuit to improve signal to noise performance under low receive level conditions, and compatibility with any standard transformer intended for PSTN communications applications.
   
Features
• Two pairs of software selectable transmit
    differential outputs for worldwide impedance
    driver implementations.
• Up to 56kbps (V.92) performance
• Programmable sample rates (7.2-16.0kHz)
• Reference clock range of 1-40MHz
• Crystal frequency range of 4.9-27MHz
• Master or slave mode operation and daisy
    chain configurable synchronous serial Host
    interface
• Low power modes
• Fully differential receiver and transmitter
    Drivers for transformer interface
• 3.0V – 3.6V operation
• 5V tolerant I/O
• Industrial temperature range (-40 to +85°C)
• JATE compliant transmit spectrum
• Package options: 32 pin QFN
   
Applications
• Central site server modems
• Set Top Boxes
• Personal Video Recorders (PVR)
• Multifunction Peripherals (MFP)
• Fax Machines
• Internet Appliances
• Game Consoles
• Point of Sale Terminals
• Automatic Teller Machines
• Speaker Phones
• Digital Answering Machines
• RF Modems