A CMOS HDSL2 analog front-end

摘要

A 5-V 0.5-Μm CMOS analog front-end (AFE) IC for HDSL2nincorporates transmit digital-to-analog converter (DAC), transmitnfilters, output buffer, receive AGC, and receive ADC. The AFE consumesn525 mW and provides better than 82-dB signal-to-noise-and-distortionnratio (SNDR) in both transmit and receive paths. It supports variablendata rates from 64 kb/s up to 2.32 Mb/s, and enables an HDSL2 system tonachieve better than 14 kft of noise-free reach (on 26-gauge wire) atn1.544 Mb/s