A wide range charge-balancing circuit using floating-gate transistors.
A CMOS circuit has been designed to produce charge-balanced biphasic current pulses for electrical stimulation of neurons. The circuit uses synaptic current source to generate discharging current pulses for stimulating current with amplitude ranging from 100pA to 110nA and period ranging from 0.2s to 1s. The amplitude and duration of the discharging current is controlled using programmable floating-gate transistors. The circuit has high stimulation efficiency and can be used in various neural microstimulators.
Hu
Jingzhen
J
Electrical and Computer Engineering Department, North Carolina State University, Raleigh, NC 27606 USA. jhu4@ncsu.edu
Gordon
Christal
C
D000669:Amplifiers, Electronic; D000818:Animals; D017076:Computer-Aided Design; D004558:Electric Stimulation / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D008904:Miniaturization; D009474:Neurons / Q000502:physiology*; D055672:Static Electricity; D014173:Transistors, Electronic