A Hierarchical Performance Equation Library for Basic Op-Amp Design
Inga Abel, Maximilian Neuner, Helmut Graeb
Abstract
This article presents a new approach to automate the setup of the design equations of the manual analog design process. Its main contribution is a comprehensive hierarchical performance equation library (HPEL) for op-amps. The HPEL makes the setup of design equations independent of the topology. Based on the library and the functional block recognition method in Abel <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">et al.</i> (2020), analytical performance models for various op-amp topologies are automatically instantiated. The method is currently designed for basic op-amps. In this article, we use the method to size different op-amp topologies. Experimental results featuring four circuits are presented. The HPEL has also been integrated into a structural synthesis method featuring several thousand op-amp topologies (Abel and Graeb, 2021).