ARCHITECTURES FOR AN IMPLANTABLE STIMULATOR DEVICE HAVING A PLURALITY OF ELECTRODE DRIVER INTEGRATED CIRCUITS WITH SHORTED ELECTRODE OUTPUTS

The present invention discloses an implantable stimulator device, comprising a conductive case; a first electrode array; a second electrode array; a first integrated circuit within the conductive case, wherein the first integrated circuit is configured to provide first current pulses at a first frequency to cause a first current to flow between the first electrode array and the case; and a second integrated circuit within the conductive case, wherein the second integrated circuit is configured to provide second current pulses at a second frequency to cause a second current to flow between the second electrode array and the case, wherein the first and second current pulses can overlap in time.