WSEAS Transactions on Circuits and Systems
Print ISSN: 1109-2734, E-ISSN: 2224-266X
Volume 13, 2014
Grounded Resistance/Capacitance-Controlled Sinusoidal Oscillators Using Operational Transresistance Amplifier
Authors: ,
Abstract: This paper represents, five sinusoidal oscillators based on the Operational Transresistance Amplifier (OTRA). The proposed circuits require single OTRA and a few passive components to generate oscillations. The condition of oscillation and frequency of oscillation of the first proposed circuit is controlled by a single grounded resistor. And the remaining circuits depend on independent control of condition of oscillation and frequency of oscillation. In all these proposed circuits the grounded resistor can be replaced by a grounded capacitor, which is important so far on integration point of view. The performance of the proposed circuits is examined using SPICE models. The proposed circuits were built using commercially available current feedback operational amplifier (AD844 AN) on a laboratory bread board and passive components used externally and tested for waveform generation. Theoretical analyses of the proposed circuits are verified by the experimental results carried out with the prototype circuits.
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Keywords: Oscillators, Operational Transresistance Amplifier, Analog Integrated Circuit Design, Current-Mode Oscillators, Sinusoidal Oscillators
Pages: 145-152
WSEAS Transactions on Circuits and Systems, ISSN / E-ISSN: 1109-2734 / 2224-266X, Volume 13, 2014, Art. #15