Application of resonant-tunneling quaternary quantizer to ultrahigh-speed A/D converter

An analog-to-quaternary quantizer using resonant-tunneling (RT) devices is applied to an ultrahigh-speed analog-to-digital (A/D) converter. First, transient analysis results for the quaternary quantizer, which consists of six RT diodes and one HEMT, are presented. A 4-bit A/D converter employing thi...

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Bibliographic Details
Published inProceedings / International Symposium on Multiple-Valued Logic pp. 35 - 40
Main Authors Waho, T., Yamamoto, M.
Format Conference Proceeding Journal Article
LanguageEnglish
Published IEEE 1997
Subjects
Analog-digital conversion
Circuit simulation
Diodes
Encoding
HEMTs
Logic circuits
Logic devices
Resonant tunneling devices
SPICE
Transient analysis
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Summary:An analog-to-quaternary quantizer using resonant-tunneling (RT) devices is applied to an ultrahigh-speed analog-to-digital (A/D) converter. First, transient analysis results for the quaternary quantizer, which consists of six RT diodes and one HEMT, are presented. A 4-bit A/D converter employing this quantizer with multiple-valued logic encoding circuits is then described. The number of transistors is one-fifth of that required for conventional A/D converters. SPICE simulation reveals that the present A/D converter can be operated at sampling rates as high as 4 GS/s.
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ISBN:0818679107
9780818679100
ISSN:0195-623X
DOI:10.1109/ISMVL.1997.601371