1 research outputs found
An HV-CMOS integrated circuit for neural stimulation in prosthetic applications
An integrated neural stimulator for prosthetic applications,
realized with a high-voltage CMOS 0.35-µm process, is
presented. The device is able to provide biphasic current pulses
to stimulate eight electrodes independently. A voltage booster
generates a 17-V voltage supply in order to guarantee the programmed
stimulation current even in case of high impedances
at the electrode–tissue interface. Pulse parameters such as amplitude,
frequency, and width can be programmed digitally. The
device has been successfully tested by means of both electrical and
in vivo tests, and the results show its capability to provide currents
on the order of hundreds of microamperes with impedances on the
order of tens of kiloohms