Single rail regulator

摘要

An apparatus for suppressing the effect of noise from a first circuit on the performance of a second circuit wherein the first and second circuits are on a common substrate. Each of the first and second circuits include first and second supply rails. The apparatus includes a noise isolation circuit and a noise transference circuit. The noise isolation circuit is for coupling the first supply rails of the first and second circuits to prevent noise on the first supply rail of the first circuit from transferring to the first supply rail of the second circuit. The noise transference circuit is for coupling the second supply rails of the first and second circuits so that noise on the second supply rail of the first circuit is transferred to the second supply rail of the second circuit.