A 12-bit integrated analog front end for broadband wireline networks

Author

Mehr, Iuri ; Maulik, Prabir C. ; Paterson, Donald

Author_Institution

Analog Devices Inc., Wilmington, MA, USA

Volume

37

Issue

3

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

302

Lastpage

309

Abstract

An integrated transceiver for broadband wireline networks is presented. The transceiver includes a receive data path, a transmit data path, and auxiliary functions including serial port interface, clock and reference generation blocks, and voltage regulator control circuitry. The receive data path provides constant input impedance and is composed of two variable gain amplifier (VGA) blocks, a tuned analog 4-pole filter, a 12-b analog-to-digital converter (ADC) sampling at 32 MHz, and a digital high-pass filter. Filter tuning using switched-capacitor arrays occurs in the background, with no effect on signal reception. The transmit data path contains digital interpolation filters and a 12-b digital-to-analog converter (DAC) sampling at 128 MHz. The chip was implemented in double-poly triple-metal 0.35-μm CMOS technology. Measured performance for both receive and transmit data paths meets target specifications with no noticeable crosstalk

Keywords

CMOS analogue integrated circuits; broadband networks; subscriber loops; transceivers; 0.35 micron; 12 bit; 128 MHz; 32 MHz; CMOS technology; analog-to-digital converter; broadband wireline network; clock generation block; digital high-pass filter; digital interpolation filter; digital-to-analog converter; integrated analog front-end; integrated transceiver; receive data path; reference generation block; serial port interface; switched-capacitor array; transmit data path; tuned analog four-pole filter; variable gain amplifier; voltage regulator control circuit; CMOS technology; Circuits; Clocks; Digital filters; Gain; Impedance; Regulators; Sampling methods; Transceivers; Voltage control;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.987081

Filename

987081