Yet More On Decoupling, Part 4—Don't Get Into A Macromuddle!

This paper is the fourth in a six-part series discussing power-supply decoupling and bypass capacitors. Extending a previous four-part series, this series looks at interactions between supply and capacitor, capacitor materials, and simulation models. The focus of this paper is how inaccurate op-amp simulation macromodels can lead to misleading results where the effect of bypass capacitors in decoupling applications is concerned.