High-Speed High-Precision CMOS Current Conveyor

Authors: Calvo B.1; Celma S.2; Martínez P.A.2; Sanz M.T.2

Source: Analog Integrated Circuits and Signal Processing, Volume 34, Number 3, March 2003 , pp. 265-269(5)

Publisher: Springer

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Abstract:

In this paper a new class-AB CMOS second generation current conveyor (CCII) based on a novel high-performance voltage follower topology is proposed. Post-layout simulation results from a 0.8 mum design supplied at 3.3 V show very low resistance at node X (< 50 Omega), high frequency operation (sim100 MHz), high precision in the voltage and current transference and reduced offset. As application examples, a V-I converter and a current feedback operational amplifier (CFOA) have been implemented. The latter presents slew-rate levels higher than ±100 V/mus.

Keywords: CMOS analogue circuits; current conveyor; current-mode signal processing; current feedback operational amplifier

Language: English

Document Type: Research article

Affiliations: 1: Grupo de Diseño Electrónico, Facultad de Ciencias at the Universidad de Zaragoza, Zaragoza, Spain Fax: +34 976 762143 becalvo@posta.unizar.es; uelec@posta.unizar.es 2: Grupo de Diseño Electrónico, Facultad de Ciencias at the Universidad de Zaragoza, Zaragoza, Spain Fax: +34 976 762143 uelec@posta.unizar.es

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