Server: Netscape-FastTrack/2.01 Date: Fri, 21 Nov 1997 05:01:38 GMT Accept-ranges: bytes Last-modified: Fri, 24 Oct 1997 21:33:30 GMT Content-length: 4564 Content-type: text/html Burr-Brown AFE1124

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AFE1124

HDSL/MDSL Analog Front End




FEATURES
  • SERIAL DIGITAL INTERFACE
  • 28-PIN SSOP
  • E1, T1 AND MDSL OPERATION
  • 64kbps TO 1168kbps OPERATION
  • SCALEABLE DATA RATE
  • 250mW POWER DISSIPATION
  • COMPLETE HDSL ANALOG INTERFACE
  • +5V POWER (5V or 3.3V Digital)


DESCRIPTION
Burr-Brown's Analog Front End chip greatly reduces the size and cost of an xDSL (Digital Subscriber Line) system by providing all of the active analog circuitry needed to connect a digital signal processor to an external compromise hybrid and line transformer. The AFE1124 is optimized for HDSL (High bit rate DSL) and for lower speed MDSL (Medium speed DSL) and RADSL (Rate Adaptive DSL) applications. Because the transmit and receive filter responses automatically change with clock frequency, the AFE1124 is particularly suitable for RADSL and multiple rate DSL systems. The device operates over a wide range of data rates from 64kbps to 1168kbps.

Functionally, this unit consists of a transmit and a receive section. The transmit section generates analog signals from 2-bit digital symbol data and filters the analog signals to create 2B1Q symbols. The on board differential line driver provides a 13.5dBm signal to the telephone line. The receive section filters and digitizes the symbol data received on the telephone line. This IC operates on a single 5V supply. The digital circuitry in the unit can be connected to a supply from 3.3V to 5V. It is housed in a 28-pin SSOP package.




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Burr-Brown FaxLine

You can have the AFE1124 faxed to you by calling Burr-Brown's FaxLine—an automated fax-on-demand system.
  • Call 1-800-548-6133 (US/Canada only).
  • Request Document Number 11425


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