Improved implementation of Chua´s chaotic oscillator using current feedback op amp

An improved implementation of Chua´s chaotic oscillator is proposed. The new realization combines attractive features of the current feedback op amp (CFOA) operating in both voltage and current modes to construct the active three-segment voltage-controlled nonlinear resistor. Several enhancements are achieved: the component count is reduced and the chaotic spectrum is extended to higher frequencies. In addition, a buffered and isolated voltage output directly representing a state variable is made available. Based on a linearized model of Chua´s circuit, the useful tuning range of the major bifurcation parameter (G) and the expected frequency of oscillation, are estimated