Chapter 452

A SPICE op amp macromodel

Walt Jung

Abstract

A SPICE operational amplifier macromodel for the LT1012 is described.

Keywords

Operational amplifier

LT1012 macromodel

Introduction

The Boyle et al. [1] SPICE macromodel for op amps has proven to be quite useful for fast and efficient computer-based IC circuit analysis, used within its limitations. Critics of this type of model point out that it is not optimum for precise transient analysis of amplifiers using complex compensation. On the other hand, the Boyle macromodel may have little match in terms of the computational speed and performance it can achieve, plus how quickly it can be implemented. These virtues are particularly true for lower frequency op amps, or where DC ...

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