AN IC CHIP OF CHUA CIRCUIT

This paper reports a working microelectronic chip implementation of Chua's circuit. This chip has been designed and fabricated by using a 2 mum CMOS technology, with the circuit itself occupying a silicon area of 2.5 mm x 2.8 mm. The chip needs to be powered with a single 9V battery, is autonomous, and generates chaotic signals from the three state variables of Chua's circuit. The proper operation of this chip has been confirmed by experimental reproduction of bifurcation and chaotic phenomena. This microelectronic design of Chua's circuit can be employed as a basic component in the VLSI synthesis of complex circuits making use of chaotic signals, including a class of cellular neural networks and secure communication systems.