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Analog Frontend of an Implantable Biological Nerve Micro-stimulation Chip

An analog frontend of an implantable baseband SOC (System-on-a-chip) chip design for the interface of neural micro-stimulation is present in this thesis. The mentioned neural interface including controllable stimulators, and telemetry for data and power transmission which is powered by transcutaneous magnetic coupling. An external transmitter coil is required to power and communicate with the implanted device. It can avoid the risk of causing infection and the problem of limited battery life.
The first topic of this thesis proposes a single stage differential amplifier to be used as an Error Amplifier in an LDO (Low Dropout) regulator. It increases the bandwidth and decreases the chip¡¦s area at the same time. When a bandgap bias is integrated with our design in a feedback loop, a stable voltage source is constituted to become a power supply for the entire implanted chip.
The second topic reveals a C-less (no capacitor) area-saving ASK (Amplitude Shift keying) demodulator. Since there is no capacitor used in the demodulator, it can substantially reduce the layout area of the SOC without any sacrifice of the performance of the SOC

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0710104-232604
Date10 July 2004
CreatorsChio, U-Fat
ContributorsHsiao-Hwa Chen, Sying-Jyan Wang, Chua-Chin Wang, Ju-Ya Chen
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0710104-232604
Rightsunrestricted, Copyright information available at source archive

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