SYSTEM ON A CHIP, APPARATUS AND METHOD FOR VOLTAGE RIPPLE REDUCTION ON A POWER SUPPLY LINE OF AN INTEGRATED CIRCUIT DEVICE OPERABLE IN AT LEAST TWO MODES

摘要

An apparatus (22) for voltage ripple reduction on a power supply line (24) of an integrated circuit device (26) operable in at least two modes, comprises one or more clamping devices (28, 30) connectable to the power supply line; a clamp control unit (32); and a mode change detection unit (34) arranged to monitor an interface (36) of the integrated circuit device for one or more information indicating an upcoming mode change of the integrated circuit device and to provide a mode change signal to the clamp control unit when the one or more information is detected; wherein the clamp control unit is arranged to connect at least one of the one or more clamping devices to the power supply line when receiving the mode change signal.