Implementation of a chaotic oscillator by designing Chua's diode with CMOS CFOAs

Authors:
E. Tlelo-Cuautle;A. Gaona-Hernández;J. García-Delgado
Affiliations:
INAOE, Department of Electronics, Tonantzintla, Mexico 72000;BUAP, Faculty of Electronics Science, Puebla, Mexico;BUAP, Faculty of Electronics Science, Puebla, Mexico
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2006

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Abstract

The implementation of a chaotic oscillator which is based on Chua's circuit, is presented. Chua's diode is realized by using current feedback operational amplifiers (CFOAs). Furthermore, it is shown that a CMOS compatible CFOA can be designed by connecting two voltage followers sandwiched between two current mirrors. The proposed implementation is biased at 卤1.2 V, and simulated by using SPICE and standard CMOS technology of 0.35 驴m. Finally, simulation results are presented to show the sequence of chaotic behaviours for increasing values of the linear resistance.