A 100-MHz, 50-Ω, -45-dB distortion, 3.3-V CMOS line driver for Ethernet and fast Ethernet networking applications

Author

Babanezhad, Joseph N.

Author_Institution

Plato Labs., Campbell, CA, USA

Volume

34

Issue

8

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

1044

Lastpage

1050

Abstract

A fast line driver has been developed for networking applications in a 0.4-μ digital CMOS process. It is intended to drive cables with large, low-distortion sinewaves for 10BASE-T and sharp-edged pulses for 100BASE-T-type data communications. The driver has a fully differential architecture and uses a current-feedback approach to achieve small- as well as large-signal closed-loop bandwidths in excess of 100 MHz. It can drive a 10-MHz, 5-V_pp sinewave across a 50-Ω load from a 3.3-V power supply with a total harmonic distortion of -43 dB. The quiescent power consumption of the driver is 25 mW, while its area is 0.15 mm²

Keywords

CMOS integrated circuits; data communication equipment; differential amplifiers; driver circuits; feedback amplifiers; harmonic distortion; local area networks; operational amplifiers; 0.4 micron; 100 MHz; 100BASE-T; 10BASE-T; 25 mW; 3.3 V; 50 ohm; CMOS line driver; Ethernet network; data communication; differential current feedback opamp; total harmonic distortion; CMOS process; Cables; Driver circuits; Ethernet networks; Impedance; Operational amplifiers; Power supplies; Resistors; Transformers; Voltage;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.777101

Filename

777101