An 8-Channel Bidirectional Neurostimulator IC with a Highly-Linear High-Dynamic-Range ADC-Direct Architecture for Simultaneous Recording and Stimulation

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dc.contributor.advisorKassiri, Hossein
dc.contributor.authorMoeinfard, Tania
dc.date.accessioned2021-03-08T17:18:29Z
dc.date.available2021-03-08T17:18:29Z
dc.date.copyright2020-10
dc.date.issued2021-03-08
dc.date.updated2021-03-08T17:18:29Z
dc.degree.disciplineElectrical and Computer Engineering
dc.degree.levelMaster's
dc.degree.nameMASc - Master of Applied Science
dc.description.abstractThis thesis presents the design, implementation, and validation of an 8-channel bidirectional neurostimulator IC with a highly-linear high-dynamic-range ADC-direct architecture for simultaneous recording and stimulation. Each channel hosts a novel highly-linear high-dynamic-range recording architecture capable of amplification and quantization of brains neural signals in the presence of large differential-mode and common-mode stimulation artifacts, as well as a fully-programmable 8-bit current-mode electrical stimulator. The architecture enables the possibility of a patient-specific stimulation therapy required for the next generation of implantable closed-loop neuro-stimulators used for treatment of various neurological disorders. The proposed design adopts an ADC-direct architecture employing a dual-loop SAR-assisted continuous-time delta-sigma ADC architecture for differential-mode stimulation artifacts and offset removal. The presented channel achieves a high input impedance (1.8 G at 1 kHz), 400 mV linear input signal range, 94 dB dynamic range, and consumes 4.6 W with a signal bandwidth of 5 kHz.
dc.identifier.urihttp://hdl.handle.net/10315/38160
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectBiomedical Engineering
dc.subject.keywordsNeural Recording
dc.subject.keywordsSimultaneous Recording and Stimulation
dc.subject.keywordsClosed-loop Stimulation
dc.subject.keywordsFront End
dc.subject.keywordsContinuous Time
dc.subject.keywordsDelta Sigma
dc.subject.keywordsDynamic Range
dc.subject.keywordsLinear Input Range
dc.titleAn 8-Channel Bidirectional Neurostimulator IC with a Highly-Linear High-Dynamic-Range ADC-Direct Architecture for Simultaneous Recording and Stimulation
dc.typeElectronic Thesis or Dissertation

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