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New two CFOA-based sinusoidal RC oscillators with buffered outlet

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Abstract

Using a unified representation for a class of buffered-outlet two current-feedback operational amplifier (CFOAs)-based sinusoidal oscillators, new circuits of this type can be systematically discovered. A catalogue of four circuit structures, each structure realizing nine oscillator circuits, is presented. Moreover, using the RC:CR transformation, additional nine oscillator circuits can be obtained from each structure. While each circuit requires five passive elements, some of the circuits enjoy one or more of the following attractive features: use of grounded capacitors, feasibility of absorbing the parasitic components of the CFOAs and orthogonal tuning of the frequency and the startup condition of oscillation.

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Acknowledgments

The author acknowledges with thanks the constructive comments of the reviewers which resulted in an improved presentation. The author would also like to thank the reviewer who brought reference [17] to his attention.

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Authors and Affiliations

  1. King Fahd University of Petroleum and Minerals, Box 203, Dhahran, 31261, Saudi Arabia

    Muhammad Taher Abuelma’atti

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  1. Muhammad Taher Abuelma’atti
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Correspondence to Muhammad Taher Abuelma’atti.

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Abuelma’atti, M.T. New two CFOA-based sinusoidal RC oscillators with buffered outlet. Analog Integr Circ Sig Process 66, 475–482 (2011). https://doi.org/10.1007/s10470-010-9582-5

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