HIGH EFFICIENCY HALF-CROSS-COUPLED DECOUPLING CAPACITOR

A decoupling capacitor circuit design facilitates high operational frequency without sacrificing area efficiency. In order to disassociate the sometimes opposing design criteria of high operational frequency and area efficiency, a p-channel field effect transistor (PFET 302) and an n-channel field effect transistor (NFET 304) are connected in a half-cross-coupled (HCC) fashion. The HCC circuit is then supplemented by at least one area efficient capacitance (AEC) device in the form of a second NFET (802) or a second PFET (702). The half-cross-coupled transistors address the high frequency design requirement, while the AEC device(s) address the high area efficiency requirement. The design eliminates the undesirable trade-off between operating frequency and area efficiency inherent in some conventional DCAP designs.