Patent ID: 9604061
Date: 2017-03-28
CPC Classifications: A61N

Claim:
1. A neurostimulation system comprising: a reference electrode; a plurality of stimulation electrodes; a stimulation electrode drive circuit for each of the plurality of stimulation electrodes, each stimulation electrode drive circuit configured to receive a digital output and an analog output, and to: 1) in response to receipt of a first digital output and a first analog output, source current through its associated stimulation electrode at an amperage value determined based on the first analog output, and 2) in response to receipt of a second digital output and a second analog output, sink current through its associated stimulation electrode at an amperage value determined based on the second analog output; and a reference electrode drive circuit adapted to maintain the reference electrode at a constant potential when any or all of the stimulation electrodes are sourcing or sinking current.