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The Scientific World Journal
Volume 2014, Article ID 423979, 7 pages
http://dx.doi.org/10.1155/2014/423979
Research Article

Simple BiCMOS CCCTA Design and Resistorless Analog Function Realization

Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang (KMITL), Ladkrabang, Bangkok 10520, Thailand

Received 9 March 2014; Revised 2 June 2014; Accepted 18 June 2014; Published 16 July 2014

Academic Editor: Leopoldo Angrisani

Copyright © 2014 Worapong Tangsrirat. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The simple realization of the current-controlled conveyor transconductance amplifier (CCCTA) in BiCMOS technology is introduced. The proposed BiCMOS CCCTA realization is based on the use of differential pair and basic current mirror, which results in simple structure. Its characteristics, that is, parasitic resistance and current transfer , are also tunable electronically by external bias currents. The realized circuit is suitable for fabrication using standard 0.35 μm BiCMOS technology. Some simple and compact resistorless applications employing the proposed CCCTA as active elements are also suggested, which show that their circuit characteristics with electronic controllability are obtained. PSPICE simulation results demonstrating the circuit behaviors and confirming the theoretical analysis are performed.