Novel First-Order and Second-Order Current-Mode Filters using Multiple-Output Operational Transconductance Amplifiers

Kamath, D V and Ananda Mohan, P V and Prabhu, G K (2010) Novel First-Order and Second-Order Current-Mode Filters using Multiple-Output Operational Transconductance Amplifiers. Circuits, Systems, and Signal Processing, 29 (3). pp. 553-576. ISSN 1531-5878

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Official URL: http://link.springer.com/journal/34

Abstract

In this paper, a general structure using dual-output operational transconductance amplifiers (OTAs) is explored to derive new first-order and second-order multi-function filters using OTAs with multiple current outputs and with and without grounded capacitors. Two first-order all-pass filters that have been obtained are presented, together with an analysis of nonidealities of OTAs, viz., finite bandwidth and parasitic output and input resistance and capacitance. Second-order multi-function filters obtained by using OTA-C simulated inductances in the proposed general structure are also presented. The realization of quadrature oscillator using the proposed first-order all-pass networks is also considered. Detailed analysis of nonideal frequency performance of the OTAs as well as finite output and input impedances is presented. SPICE simulation results are also given for the proposed circuits.

Item Type: Article
Additional Information: Springer Science+Business Media, LLC 2010
Uncontrolled Keywords: Active filters · OTA-C filters · All-pass filters · First-order filters · Current-mode circuits
Subjects: Engineering > MIT Manipal > Biomedical
Engineering > MIT Manipal > Electronics and Communication
Depositing User: MIT Library
Date Deposited: 16 Feb 2013 04:14
Last Modified: 02 Apr 2014 05:57
URI: http://eprints.manipal.edu/id/eprint/78445

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