Patent ID: 8250392

Claim:
Apparatus for fast turn-on/turn-off for a communication device, the apparatus comprising: control logic adapted to provide a control signal to selectively enable or disable circuitry of the communication device; and a bidirectional device having an energy storage element and a switch responsive to the control signal, the bidirectional device coupled to the control logic and a node of the circuitry of the communication device, wherein the energy storage element further comprises at least one capacitor and a source amplifier coupled to the at least one capacitor and the bidirectional device, wherein the source amplifier provides charge from the energy storage element to the node during a second duration based on a capacitance and stored charge of the at least one capacitor, wherein, based on the control signal, the switch of the bidirectional device either i) stores charge from the node to the energy storage element during a first duration, or ii) provides charge from the energy storage element to the node during a second duration, the first duration greater than the second duration.