Generalized admittance matrix models of OTRAs and COAs

This paper proposes new admittance matrix models to approach the behavior of fully-differential Operational Transresistance Amplifiers (OTRAs) and Current Operational Amplifiers (COAs). The infinity-variables method is used in order to derive the new generalized models. As a consequence, standard nodal analysis being improved to compute fully-symbolic small-signal characteristics of fully-differential analog circuits.This work has been supported by: Promep-Mexico under Grant UATLX-PTC-088; by the JAE-Doc program of CSIC co-funded by FSE, Spain; by Consejeria de Innovacion, Ciencia y Empresa,Junta de Andalucia-Spain under Grant TIC-2532; by UCMEXUS-CONACYT under the Grant CN-09-310.Peer reviewe