Patent ID: 8049561

Claim:
An amplifier comprising: a switchable capacitive divider for dividing a supply voltage delivered to the amplifier, the switchable capacitive divider including a first switch coupled to a second switch via a second capacitor, the first switch being further coupled to a first terminal of a third switch, the second switch being further coupled to a first terminal of a fourth switch, a second terminal of the third switch being coupled to a second terminal of the fourth switch, the second terminal of the third switch also coupled to an output node; a coupling circuit, coupled to the switchable capacitive divider by a first wire, for determining a connection path between said first wire, a first capacitor and a first switchable power circuit, the first capacitor being coupled to the output node, said output node being further coupled to the first switchable power circuit via a fifth switch having a first terminal coupled to the output node and a second terminal coupled to a first power terminal.