The Most Comprehensive Introduction to Decoupling Capacitors

Decoupling Capacitor Overview In some literature, decoupling capacitors are considered to be bypass capacitors. In other literature, the difference between decoupling capacitors and bypass capacitors is that: "Bypass capacitors take the interference in the input signal as the filtering object while decoupling capacitors take the interference of the output signal as the filtering object to prevent interference signal from returning to power." From the name, decoupling is the effect of removing coupling. So what is coupling, and why does coupling occur? The coupling here refers to the coupling between the output of the previous stage and the input of the subsequent stage.…