VCO-based analog-to-digital conversion

dc.contributor.advisorHassibi, Arjang
dc.contributor.advisorViswanathan, T. R., doctor of electrical engineering
dc.creatorHamilton, Joseph Garretten
dc.date.accessioned2013-11-07T20:42:58Zen
dc.date.accessioned2017-05-11T22:36:21Z
dc.date.available2017-05-11T22:36:21Z
dc.date.issued2012-12en
dc.date.submittedDecember 2012en
dc.date.updated2013-11-07T20:42:58Zen
dc.descriptiontexten
dc.description.abstractThis dissertation presents a novel [delta sigma] analog-to-digital converter architecture which replaces the operational amplifier-based integrator with a pair of tunable oscillators. A switched-capacitor V-I converter is used to combine the input voltage with a feedback DAC output and convert it into a current for two pseudo-differential current-controlled oscillators. The oscillator outputs are counted with a digital counter, and a digital back-end [delta sigma] modulator is used to truncate the high-resolution counter outputs for the feedback DAC path. This architecture has compelling advantages in deep sub-micron and emerging technologies where supply voltages are decreasing to a point that traditional analog architectures are no longer feasible. Additionally, this architecture takes advantage of the increased speed in these short-channel technologies. Measured results on a 6.08mW prototype in TSMC 0.18um achieving 63.5dB in a 2MHz bandwidth are presented.en
dc.description.departmentElectrical and Computer Engineeringen
dc.embargo.lift12/1/2013en
dc.embargo.terms12/1/2013en
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/2152/22041en
dc.language.isoen_USen
dc.subjectVCOen
dc.subjectRing oscillatoren
dc.subjectDelta-sigmaen
dc.subjectADCen
dc.subjectTime-baseden
dc.titleVCO-based analog-to-digital conversionen

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