Journals Proceedings

Abstract

In this paper a new method for determining the component values and transistor dimensions for CMOS operational amplifiers (Op-Amps) is presented. As a wide variety of design objectives and constraints are Posynomial function of the design variables, the Optimization is done by Geometric Programming. As a consequence we can efficiently determine globally optimal trade-offs among competing performance measures such as power, open-loop gain and bandwidth. In this paper I applied this method to a Two Stage Cascoded operational amplifier. The paper shows how the method can be used to synthesize robust design, i.e., design guaranteed to meet the specifications for a verity of process condition and parameters. The synthesis method is fast and determines the globally optimal design.