A 232-Channel Visual Prosthesis ASIC with Production-Compliant Safety and Testability

Abstract

A retina stimulator has been realized in 0.35 μm HVCMOS. The 22mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ASIC features wireless operation, custom ESD protection and programmable reference tuning. It has 232 channels combined with production-compliant testability and safety, and output swing as high as plusmn10V at all electrodes. The power overhead is about 20% of the stimulation power.