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73M1903C Datasheet Modem Analog Front End

Manufacturer: Teridian Semiconductor

Overview: 73M1903C Modem Analog Front End Simplifying System IntegrationTM DS_1903C_033.

General Description

The 73M1903C Analog Front End (AFE) IC includes fully differential hybrid driver outputs, which connect to the telephone line interface through a transformerbased 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 patibility with any standard transformer intended for PSTN munications applications.

Key Features

  • of the device include an input reference frequency circuit, which accepts a range of crystals from 4.9-27 MHz. It also accepts external reference clock values between 1 MHz and 40 MHz generated by the host processor. In most.

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