A Novel Current-Mode SIMO Type Universal Filter Using CFTAs
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Date
2009-02-01
Authors
Herencsár, Norbert
Koton, Jaroslav
Vrba, Kamil
Mišurec, Jiří
0000-0002-9504-2275Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Hikari Ltd.
Abstract
In this paper a new active element for the realization of current-mode analog blocks Current Follower Transconductance Amplifier (CFTA) is presented. The element is a combination of the Current Follower (CF) and the Balanced Output Transconductance Amplifier (BOTA). In the paper we also document another extended active element CFTA which has more current outputs than can be realized by the UCC-N1B circuit, which was developed at our workplace. The application of this active element is shown on the realization of current-mode second-order universal frequency filters of the type SIMO (single-input- multi-output). The circuit structure consists of three active and three passive elements. The circuit was analyzed using signal-flow graphs. The properties of the proposed universal filter were subjected to a sensitivity analysis and AC analysis using PSpice software.
In this paper a new active element for the realization of current-mode analog blocks Current Follower Transconductance Amplifier (CFTA) is presented. The element is a combination of the Current Follower (CF) and the Balanced Output Transconductance Amplifier (BOTA). In the paper we also document another extended active element CFTA which has more current outputs than can be realized by the UCC-N1B circuit, which was developed at our workplace. The application of this active element is shown on the realization of current-mode second-order universal frequency filters of the type SIMO (single-input- multi-output). The circuit structure consists of three active and three passive elements. The circuit was analyzed using signal-flow graphs. The properties of the proposed universal filter were subjected to a sensitivity analysis and AC analysis using PSpice software.
In this paper a new active element for the realization of current-mode analog blocks Current Follower Transconductance Amplifier (CFTA) is presented. The element is a combination of the Current Follower (CF) and the Balanced Output Transconductance Amplifier (BOTA). In the paper we also document another extended active element CFTA which has more current outputs than can be realized by the UCC-N1B circuit, which was developed at our workplace. The application of this active element is shown on the realization of current-mode second-order universal frequency filters of the type SIMO (single-input- multi-output). The circuit structure consists of three active and three passive elements. The circuit was analyzed using signal-flow graphs. The properties of the proposed universal filter were subjected to a sensitivity analysis and AC analysis using PSpice software.
Description
Keywords
Current Follower Transconductance Amplifier (CFTA), current-mode circuit, universal filter, signal-flow graph, Universal Current Conveyor (UCC), BOTA, Current Follower Transconductance Amplifier (CFTA), current-mode circuit, universal filter, signal-flow graph, Universal Current Conveyor (UCC), BOTA
Citation
Contemporary Engineering Sciences. 2009, vol. 2, issue 2, p. 59-66.
http://www.m-hikari.com/ces/ces2009/ces1-4-2009/herencsarCES1-4-2009.pdf
http://www.m-hikari.com/ces/ces2009/ces1-4-2009/herencsarCES1-4-2009.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en