Ponencia
CMOS design of chaotic oscillators using state variables: a monolithic Chua's circuit
Autor/es | Rodríguez Vázquez, Ángel Benito
![]() ![]() ![]() ![]() ![]() ![]() ![]() Delgado Restituto, Manuel |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Fecha de publicación | 1993 |
Fecha de depósito | 2019-10-29 |
Publicado en |
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ISBN/ISSN | 1057-7130 1558-125X |
Resumen | This paper presents design considerations for monolithic implementation of piecewise-linear (PWL) dynamic systems in CMOS technology. Starting from a review of available CMOS circuit primitives and their respective merits ... This paper presents design considerations for monolithic implementation of piecewise-linear (PWL) dynamic systems in CMOS technology. Starting from a review of available CMOS circuit primitives and their respective merits and drawbacks, the paper proposes a synthesis approach for PWL dynamic systems, based on state-variable methods, and identifies the associated analog operators. The GmC approach, combining quasi-linear VCCS's, PWL VCCS's, and capacitors is then explored regarding the implementation of these operators. CMOS basic building blocks for the realization of the quasi-linear VCCS's and PWL VCCS's are presented and applied to design a Chua's circuit IC. The influence of GmC parasitics on the performance of dynamic PWL systems is illustrated through this example. Measured chaotic attractors from a Chua's circuit prototype are given. The prototype has been fabricated in a 2.4- mu m double-poly n-well CMOS technology, and occupies 0.35 mm/sup 2/, with a power consumption of 1.6 mW for a +or-2.5-V symmetric supply. Measurements show bifurcation toward a double-scroll Chua's attractor by changing a bias current. |
Cita | Rodríguez Vázquez, Á.B. y Delgado Restituto, M. (1993). CMOS design of chaotic oscillators using state variables: a monolithic Chua's circuit. En Transactions on Circuits and Systems II: Analog and Digital Signal Processing (596-613), Institute of Electrical and Electronics Engineers. |
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