Optimal design of low-noise three-stage Op-amp using PSO algorithm

Abstract

This paper adopts the bio-inspired Particle Swarm Optimization (PSO) algorithm for the design of a low-noise three-stage CMOS operational amplifier (TSCOA) circuit. The concept of PSO relies on the communal manner of bird flocking techniques. It is a very simple and easy to implement. The contribution of this work is to optimize the sizes of the individual MOS transistors by using PSO to reduce overall area of the circuit as well as the power dissipation. The optimized results are confirmed by Cadence simulator. The Cadence (IC 510) simulated results show that the design specifications are accurately met and the necessary functionalities are achieved. PSO-based design results in an improved functionality compared to those of the results reported in the recent literature.