Table of Contents
ISRN Electronics
Volume 2013, Article ID 910170, 7 pages
http://dx.doi.org/10.1155/2013/910170
Research Article

Comparative Study of Resistorless Filters Using Differential Voltage Current Controlled Current Feedback Operational Amplifiers and Differential Voltage Current Controlled Current Conveyors

Physics Department, Electronics Laboratory, University of Patras, 26504 Rio Patras, Greece

Received 9 June 2013; Accepted 5 August 2013

Academic Editors: M. Hopkinson, V. McGahay, Y. Takahashi, and X. Yang

Copyright © 2013 Costas Laoudias and Costas Psychalinos. 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

Differential Voltage Current Controlled Current Feedback Operational Amplifier is an attractive active element for realizing resistorless filters with a minimum active component count. This is verified through a design example, where a 3rd-order leapfrog filter has been realized using the AMS 0.35 μm CMOS process design kit. The performance of the Differential Voltage Current Controlled Current Feedback Operational Amplifier filter is evaluated and compared with that obtained by the corresponding filter, where Differential Voltage Current Controlled Current Conveyors have been employed.