Patent ID: 6765426
Filing Date: 2004-07-20
Classification: H03K

Abstract:
A system for isolating supply noise caused by variations in supply voltage from a system output, the system having a first supply and a second supply, comprising:a plurality of buffers coupled to a system input; a plurality of sensing and control modules wherein at least one of the plurality of sensing and control modules is coupled to the first supply and at least one of the plurality of sensing and control modules is coupled to the second supply, each sensing and control module coupled to one of the plurality of buffers; and a plurality of output drivers coupled to the system output, each output driver coupled to one of the plurality of buffer circuits and one of the plurality of sensing and control modules, wherein the plurality of sensing and control modules increasingly disable at least a portion of the plurality of output drivers as voltage changes with respect to time increase at the first supply or the second supply.