CMOS variable transconductance circuit with constant bandwidth

11 May 1989

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 25 (10) , 675-676
https://doi.org/10.1049/el:19890457

Abstract

This letter proposes a new linear CMOS transconductor circuit. It has a transconductance linearly variable by a gate voltage and a rather high bandwidth. Moreover, this bandwidth remains constant when the transconductance is varied. The circuit exploits the square-law characteristic of MOS transistors biased in saturation.

Keywords

MOS TRANSISTORS
ANALOGUE IC BUILDING BLOCK
VOLTAGE/CURRENT CONVERTOR
SQUARE-LAW CHARACTERISTIC
SATURATION REGION BIAS
VARIABLE TRANSCONDUCTANCE CIRCUIT
CONSTANT BANDWIDTH
GATE VOLTAGE
CMOS
MONOLITHIC IC
LINEARLY VARIABLE TRANSCONDUCTANCE

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