Sizing of two stage Op-Amp using OHS algorithm

Abstract

An optimally designed CMOS Op-Amp has been presented in this article. Opposition concept based harmony Search (OHS) algorithm is applied for obtaining the minimum MOS area of the proposed Op-Amp. The proposed OHS based analog CMOS Op-Amp circuit design has alleviated from the problems of suboptimal convergence and stagnation, unlike Particle Swarm Optimization (PSO) and Harmony Search (HS). The least total MOS area of 121.8 μm2 is obtained in 0.35 μm CMOS technology with a power dissipation of 616.3 μW.