Voltage- and current-controlled high CMRR instrumentation amplifier using CMOS current conveyors

Authors

HAMDİ ERCAN
SEZAİ ALPER TEKİN
MUSTAFA ALÇI

DOI

10.3906/elk-1011-939

Abstract

A new approach to the design of an instrumentation amplifier using only 2 CMOS current-controlled conveyors and an active resistor is introduced. The new approach, which has no passive components, offers a wide bandwidth and a high common-mode rejection ratio (CMRR). Electronically controllable gain by voltage and current is also obtained by this new circuit. The circuit is simulated using the parameters of a 0.35-\mu m TSMC CMOS technology. Theoretical analysis of the circuits was carried out, and the performance of the block circuit was confirmed through PSpice simulation results.

Keywords

Current-mode circuits, Instrumentation amplifier, CMOS current conveyor, Common-mode rejection ratio (CMRR)

First Page

547

Last Page

556

Recommended Citation

ERCAN, HAMDİ; TEKİN, SEZAİ ALPER; and ALÇI, MUSTAFA (2012) "Voltage- and current-controlled high CMRR instrumentation amplifier using CMOS current conveyors," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 20: No. 4, Article 8. https://doi.org/10.3906/elk-1011-939
Available at: https://journals.tubitak.gov.tr/elektrik/vol20/iss4/8