title: A novel biphasic-current-pulse calibration technique for electrical neural stimulation.
abstract: One of the major challenge in neural prosthetic device design is to ensure charge-balanced stimulation. This paper presents a new calibration technique to minimize the mismatch between anodic and cathodic current amplitudes. The proposed circuit mainly consists of a digital and an analog calibration, where a successive approximation register (SAR) logic and a comparator are used in digital calibration while a source follower is adopted in analog calibration. With a 0.18 μm high voltage CMOS process, the simulation shows that the maximum current mismatch is 45 nA (<0.05%).
authors.lastname: Maohua Ren
authors.lastname: Jinyong Zhang
authors.lastname: Lei Wang
authors.lastname: Zhenyu Wang
mesh_terms: D000465:Algorithms; D002138:Calibration; D003198:Computer Simulation; D046690:Deep Brain Stimulation / Q000295:instrumentation*; D004567:Electrodes, Implanted; D004867:Equipment Design; D006339:Heart Rate; D006801:Humans; D008959:Models, Neurological; D016571:Neural Networks, Computer; D058117:Neural Prostheses; D011474:Prosthesis Design; D015203:Reproducibility of Results