A Single-chip Ansi Standard Isdn U-interface Transceiver

Abstract

Architectural and circuit innovations resulting in a 260mW single-chip ISDN U-interface transceiver wii h a range of more than 21Kft of AWG26 cable are described. These include a new scheme for jitter compensation using a two-phase decimator that results in faster phase adjustment and jitter tracking, and a fastconverging nonlinear echo canceler that can track time-dependent components of nonlinear distortion.