Implementation of an integrated op-amp based chaotic neuron model and observation of its chaotic dynamics

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Chaos (Woodbury, N. Y.)

DOI:https://doi.org/10.1063/1.3548064· OSTI ID:21567435

Jung, Jinwoo; Lee, Jewon; Song, Hanjung ^[1]

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1. School of Nano Engineering, Inje University, Gimhae, Gyungnam (Korea, Republic of)

This paper presents a fully integrated circuit implementation of an operational amplifier (op-amp) based chaotic neuron model with a bipolar output function, experimental measurements, and analyses of its chaotic behavior. The proposed chaotic neuron model integrated circuit consists of several op-amps, sample and hold circuits, a nonlinear function block for chaotic signal generation, a clock generator, a nonlinear output function, etc. Based on the HSPICE (circuit program) simulation results, approximated empirical equations for analyses were formulated. Then, the chaotic dynamical responses such as bifurcation diagrams, time series, and Lyapunov exponent were calculated using these empirical equations. In addition, we performed simulations about two chaotic neuron systems with four synapses to confirm neural network connections and got normal behavior of the chaotic neuron such as internal state bifurcation diagram according to the synaptic weight variation. The proposed circuit was fabricated using a 0.8-{mu}m single poly complementary metal-oxide semiconductor technology. Measurements of the fabricated single chaotic neuron with {+-}2.5 V power supplies and a 10 kHz sampling clock frequency were carried out and compared with the simulated results.

• OSTI ID: 21567435
• Journal Information: Chaos (Woodbury, N. Y.), Vol. 21, Issue 1; Other Information: DOI: 10.1063/1.3548064; (c) 2011 American Institute of Physics; ISSN 1054-1500
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BIFURCATION
CHAOS THEORY
CURIUM OXIDES
INTEGRATED CIRCUITS
KHZ RANGE 01-100
LYAPUNOV METHOD
NERVE CELLS
NEURAL NETWORKS
NONLINEAR PROBLEMS
OPERATIONAL AMPLIFIERS
SIMULATION
ACTINIDE COMPOUNDS
AMPLIFIERS
ANIMAL CELLS
CALCULATION METHODS
CHALCOGENIDES
CURIUM COMPOUNDS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY RANGE
KHZ RANGE
MATHEMATICS
MICROELECTRONIC CIRCUITS
OXIDES
OXYGEN COMPOUNDS
SOMATIC CELLS
TRANSPLUTONIUM COMPOUNDS
TRANSURANIUM COMPOUNDS