Patent ID: 7254449

Claim:
A method comprising: providing an external device that comprises a first dynamic range amplifier and a second dynamic range amplifier, said first and second dynamic range amplifiers each comprising first and second output drivers; implanting a stimulator coupled to one or more electrodes within a patient; generatng an output signal based on a first input signal with said first output driver of said first dynamic range amplifier; generating an output signal based on a second input signal with said second output driver of said first dynamic range amplifier, said second input signal comprising a substantially 180-degree-phase-shifted version of said first input signal; generating an output signal based on said first input signal with said first output driver of said second dynamic range amplifier; generating an output signal based on said second input signal with said second output driver of said second dynamic range amplifier; selecting one of said dynamic range amplifiers to be used in generating a power signal for said stimulator; disabling a remaining number of said dynamic range amplifiers; and generating said power signal based on a combination of at least one of said output signals generated by said selected dynamic range amplifier; transmitting said power signal to said stimulator; and using said power signal to generate stimulation current and deliver said stimulation current to a stimulation site within said patient via said one or more electrodes.