PE Series Capacitors Decoupling and/or Filtering

PE Series Capacitors Decoupling and/or Filtering
Written By: John D. Prymak

Decoupling is a means of eliminating or reducing those elements which restrict high speed operations. Filtering is driven by two considerations – emission and susceptance. The noise generated in high speed digital operations may need to be reduced, to achieve accepted levels of emission to prevent interference with other systems. Also, the system itself may have its distinct level of noise tolerance which would require filtering selected inputs to maintain integrity of the logic circuit operations. The solution to a decoupling problem may assist filtering, and vice versa; but, the optimum solution to either is not the optimum solution for the other.

The PE devices were originally designed for filtering, and then were later designed for decoupling. The application defines the requirement and the optimum design.