Globespan, Inc.

Min Shen

Arnold Muralt

Daniel Amrany

Frode Larsen

Nianxiong Tan

Peter D Keller

Jung-Lung Lin

Sam Olu George

In general, the multi-mode analog front-end provides an internal line driver and hybrid, as well as numerous functions, in order to provide a close to optimum solution for all digital subscriber line applications. The functions provided for by the analog front-end include; programmable hybrid attenuation; onboard amplifiers for driving external transmit and receive filters; a line driver with programmable drive and gain; programmable RC-filters capable of calibration via an internal loop-back under digital control; a programmable switched-capacitor filter for tracking the over sampling rate used by a digital signal processor; internal testing functions; a high frequency boost circuit; a dual input peak detector; selectable data rates; and a programmable data interface. The analog front-end allows for use of particular blocks within the analog front-end particular to the functions necessary to compensate for a particular digital subscriber line application.

Multi-mode analog front-end

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Ocean, NJ, United States of America

Min Shen