A mixed-signal decision-feedback equalizer that uses a look-ahead architecture

Author

Kajley, Ravinder S. ; Hurst, Paul J. ; Brown, James E C

Author_Institution

Solid-State Circuits Res. Lab., California Univ., Davis, CA, USA

Volume

32

Issue

3

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

450

Lastpage

459

Abstract

A mixed-signal decision-feedback equalizer (DFE) that uses a look-ahead architecture is described. The parallelism in the look-ahead DFE (LA DFE) achieves an increase in the data rate over a conventional DFE with a small increase in area. Fully differential analog circuits perform the convolution operation in the LA DFE, and the coefficient adaption is carried out by digital circuits. The LA DFE occupies 23 mm ² in a 2-μm CMOS process and operates at 50 Mb/s while dissipating 260 mW

Keywords

CMOS integrated circuits; adaptive equalisers; convolution; data communication equipment; decision feedback equalisers; hard discs; mixed analogue-digital integrated circuits; parallel processing; 2 micron; 260 mW; 50 Mbit/s; CMOS process; DFE chip; ISI; coefficient adaption; convolution operation; digital circuits; fully differential analog circuits; hard disc drives; look-ahead architecture; mixed-signal decision-feedback equalizer; parallelism; Adaptive equalizers; Analog circuits; Decision feedback equalizers; Detectors; Disk recording; Intersymbol interference; Laboratories; Maximum likelihood detection; Solid state circuits; Timing;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.557648

Filename

557648