Piecewise Linear Chaotic Maps in Current Mode CMOS Circuits: Nonlinear Distortion Analysis

This paper considers the current mode CMOS circuit implementation of the Sawtooth Piecewise Linear chaotic map. Starting from circuit analysis, we discuss a theoretical model to investigate the effects on the dynamical system entropy caused by the map shape nonlinear distortion, introduced by the circuit implementation. The results offer the designer an investigation tool to properly manage some relevant trade-offs related to the CMOS circuit design, highlighting the most critical model parameters affecting the deterioration of the achievable system entropy.