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Current-mode flash analog-to-digital converter

This thesis describes the development of a flash analog-to-digital converter based on
current-mode technique. The advantages of current -mode technique are higher speed,
smaller chip area, and simple division of reference current based on current mirror. A
current-mode comparator is designed consisting of a cascode current mirror and a
current sense amplifier used as a latch. The new method allows effective and simple
high-speed A/D conversion where the input is a current signal and the output of the
latch is a digital voltage signal. A four-bit flash analog-to-digital converter, using
current sense amplifier comparator is designed and simulated in 1-micron CMOS
technology. Simulation results show that for ADC with resolution below six-bit, this
technique offers a comparable accuracy with the existing voltage-mode methods at
much higher speed. / Graduation date: 1993

Identiferoai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/37347
Date30 November 1992
CreatorsMaleki, Mohammad
ContributorsKiaei, Sayfe
Source SetsOregon State University
Languageen_US
Detected LanguageEnglish
TypeThesis/Dissertation

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