Kamath, D V and Mohan , Ananda P V and Prabhu, G K (2014) Bandwidth Enhancement of Finite Gain Amplifiers Using CFOA. IETE Journal of Education, 55 (2). pp. 54-63.

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Abstract

In this paper, we present an exact analysis of finite gain inverting voltage amplifiers using current feedback operational amplifiers (CFOA) for use as stand-alone amplifiers or for being used in second-order active resistance capacitance (RC) filters such as Tow�Thomas biquads. The proposed circuits require one or two additional CFOAs/resistors/capacitors. The effect of finite output impedance at z terminal, input resistance at x terminal, and current mirror pole of the CFOA are studied. The circuits considered have been simulated using PSPICE using a behavioural macro-model of the CFOA as well as that of a practical CFOA AD 844.

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