Low-sensitivity SAB band-pass active-RC filter using impedance tapering

D. Jurišić, G. S. Moschytz, N. Mijat

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The design procedure of low-sensitivity second-and third-order class-4 Sallen and Key active resistance-capacitance (RC) allpole filters, using impedance tapering, has already been published. There a ladder structure in the positive feedback loop of an operational amplifier was used. In this paper desensitization using impedance tapering is applied to class-3 circuits with negative feedback referred to as a single-amplifier biquad (SAB). The RC-section in the negative feedback loop is impedance scaled upwards from the driving source to the negative amplifier input. Second-order band-pass filters are considered. The improvement comes free of charge: component count and topology remain unchanged, whereas the component values. Selected for impedance tapering, account for the significant decrease in sensitivity to component tolerances.

Original languageEnglish
Title of host publicationISCAS 2001 - 2001 IEEE International Symposium on Circuits and Systems, Conference Proceedings
Pages160-163
Number of pages4
DOIs
StatePublished - 2001
Externally publishedYes
Event2001 IEEE International Symposium on Circuits and Systems, ISCAS 2001 - Sydney, NSW, Australia
Duration: 6 May 20019 May 2001

Publication series

NameISCAS 2001 - 2001 IEEE International Symposium on Circuits and Systems, Conference Proceedings
Volume1

Conference

Conference2001 IEEE International Symposium on Circuits and Systems, ISCAS 2001
Country/TerritoryAustralia
CitySydney, NSW
Period6/05/019/05/01

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