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PhD Final Examination – Spencer Leuenberger


Thursday, December 7, 2017 10:00 AM - 12:00 PM

Design Techniques for High-Resolution and High-Speed Ring Amplifiers
Demands of today’s integrated society dependent on communication systems have driven the creation of ever more efficient analog-to-digital converters. For the same reasons, digital circuitry has rapidly expanded to serve all the different systems and needs of consumers. The trend of technology development has been to make these digital circuits more efficient. This has led to a degradation of key analog parameters. Ring amplifiers are one emerging circuit meant to replace the Operation Amplifier in switched-capacitor circuits and overcome the degradation of analog parameters. This dissertation details the design and operation of ring amplifiers. It presents two prototype analog-to-digital converters using ring amplifiers. One ring amplifier employs the use of current-starved inverters and a dynamic deadzone to achieve 74 dB signal-to-noise-distortion ratio at 20 MSPS in a 180 nm complementary metal–oxide–semiconductor process. Another ring amplifier using a correlated level shifting scheme to achieve 74 dB signal-to-noise-distortion ratio at 40 MSPS is presented.

Major Advisor: Un-Ku Moon
Committee: Gabor Temes
Committee: Arun Natarajan
Committee: Karti Mayaram
GCR: David Hackleman


Kelley Engineering Center (campus map)
1007
Calvin Hughes
1 541 737 3168
Calvin.Hughes at oregonstate.edu
Sch Elect Engr/Comp Sci
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