What is it about?
Gyrators are used in active filter design to simulate an inductor by means of active devices. Their common-mode stability is one of the important issue during the design process. In this article we address that issue comprehensively and provide a design methodology for it.
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Why is it important?
We proposed a design methodology for OTA-based gyrators that carefully accounts for the common-mode stability of OTAs as well as the common-mode stability of the gyrator's loop. Moreover, the methodology is driven from the theoretical stability equations and provides stability requirements that can easily be verified during the CAD design.
Perspectives
Even though, common-mode stability is a well known issue for differential amplifiers, it is not well addressed and documented in OTA-based filter design. This article covers that area with comprehensive analysis and provides a straightforward methodology which facilitate the design process of OTA-based gyrators and filters.
Mr Saeed Ghamari
Ecole Polytechnique Federale de Lausanne
Read the Original
This page is a summary of: Design methodology for common-mode stability of OTA-based gyrators, International Journal of Circuit Theory and Applications, September 2015, Wiley,
DOI: 10.1002/cta.2154.
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