Analog line driver with adaptive impedance matching

Author

Nauta, Bram ; Dijkstra, Marcel B.

Author_Institution

Philips Res. Lab., Eindhoven, Netherlands

Volume

33

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

1992

Lastpage

1998

Abstract

A new principle for an adaptive line driver is presented. This type of line driver can adapt its output impedance automatically to the applied load. This results in automatically corrected output impedance for different cables with terminations. Also, the line-driver output impedance becomes insensitive to process variations. As an example, a line driver for analog video signals has been designed. The circuit operates from a 2.4-V supply in a 0.35-μm CMOS technology. The realized circuit adapts between 38 and 85 Ω loads, has total harmonic distortion of <-50 dB at 1.2 V_pp for 0-10 MHz, 0.09-mm² area, and 9-mW static power consumption

Keywords

CMOS analogue integrated circuits; driver circuits; impedance matching; video signals; 0 to 10 MHz; 0.35 micron; 2.4 V; 9 mW; CMOS circuit; adaptive impedance matching; analog line driver; cable termination; static power consumption; total harmonic distortion; video signal; CMOS technology; Cables; Driver circuits; Impedance matching; Laboratories; Optical losses; Power transmission lines; Resistors; Transconductance; Voltage;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.735540

Filename

735540