Publication detail

Current Follower Transconductance Amplifier (CFTA) - A Useful Building Block for Analog Signal Processing

HERENCSÁR, N. KOTON, J. VRBA, K. LATTENBERG, I.

Original Title

Current Follower Transconductance Amplifier (CFTA) - A Useful Building Block for Analog Signal Processing

Type

journal article - other

Language

English

Original 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) and MISO (multi-input-single-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.

Keywords

Current Follower Transconductance Amplifier (CFTA), Current-mode circuit, Universal filter, Signal-Flow graph, Universal Current Conveyor (UCC), BOTA.

Authors

HERENCSÁR, N.; KOTON, J.; VRBA, K.; LATTENBERG, I.

RIV year

2011

Released

14. 3. 2011

ISBN

1555-0281

Periodical

Journal of Active and Passive Electronic Devices

Year of study

6

Number

3-4

State

United States of America

Pages from

217

Pages to

229

Pages count

13

BibTex

@article{BUT50629,
  author="Norbert {Herencsár} and Jaroslav {Koton} and Kamil {Vrba} and Ivo {Lattenberg}",
  title="Current Follower Transconductance Amplifier (CFTA) - A Useful Building Block for Analog Signal Processing",
  journal="Journal of Active and Passive Electronic Devices",
  year="2011",
  volume="6",
  number="3-4",
  pages="217--229",
  issn="1555-0281"
}