Graduate Thesis Or Dissertation

 

Digital implementation of a mismatch-shaping successive-approximation ADC Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1831cp92s

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  • Utilizing a two-capacitor topology, the digital implementation of an audio-band successive-approximation analog-to-digital converter (ADC) is explored in the context of mismatch-shaping where the mismatch estimates are accurate to the first order. A second-order Δ∑ loop was found to be effective in system simulations given a 0.1% capacitor mismatch. Spectral analysis of the ADC shows dramatic improvements in total harmonic distortion as well as 87 dB SNDR (signal to noise and distortion ratio) for an oversampling ratio of 10.
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