An Improved Active Decoupling Capacitor for Hot-Spot Supply Noise Reduction in A

Abstract

EE, and Resve Saleh , Fellow, IEEE Abstract—On-chip decoupling capacitors (decaps) are widely used to reduce power supply noise by placing them at the appro- priate locations on the chip between blocks. While passive decaps can provide a certain degree of protection against IR drop, if a problem is found after the physical design is completed, it is difficult to implement a quick fix to the problem. In this paper, we investigate the use of an active decap as a drop-in replacement for passive decap