A Wide Range Charge-Balancing Circuit using Floating-Gate Transistors

Author

Jingzhen Hu ; Gordon, C.

Author_Institution

North Carolina State Univ., Raleigh

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

5695

Lastpage

5698

Abstract

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 100 pA to 110 nA and period ranging from 0.2 s to Is. 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.

Keywords

CMOS integrated circuits; bioelectric potentials; neuromuscular stimulation; CMOS circuit; charge-balancing circuit; current 100 pA to 110 nA; discharging current pulses; floating-gate transistor; synaptic current source; time 0.2 s to 1 s; Electrical stimulation; Electrochemical processes; Electrodes; Extracellular; Nerve fibers; Nerve tissues; Neurons; Pulse circuits; Pulse generation; Tissue damage; Amplifiers, Electronic; Animals; Computer-Aided Design; Electric Stimulation; Equipment Design; Equipment Failure Analysis; Humans; Miniaturization; Neurons; Static Electricity; Transistors, Electronic;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4353639

Filename

4353639