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Erschienen in:
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2024 | OriginalPaper | Buchkapitel

5. Rapid Single Flux Quantum (RSFQ) Circuits

verfasst von : Gleb Krylov, Tahereh Jabbari, Eby G. Friedman

Erschienen in: Single Flux Quantum Integrated Circuit Design

Verlag: Springer International Publishing

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Abstract

In this chapter, the most popular type of superconductive digital logic—rapid single flux quantum (RSFQ) logic—is described. The basic building blocks of digital RSFQ circuits are reviewed in this chapter. Different types of transmission lines for this technology—JTL and PTL—are introduced, and the advantages and disadvantages of these interconnect structures are discussed. Certain basic structures of RSFQ circuits, flux storage loops, balanced comparators, and buffers, are described here as a framework to demonstrate the operation of more complex gates. Bias current distribution in RSFQ circuits is also discussed in this chapter. Resistive bias distribution, commonly used in RSFQ circuits, is described, and the disadvantages of this approach are reviewed. Energy-efficient modifications to RSFQ logic to reduce or eliminate static power dissipation are also introduced, along with the advantages and disadvantages of these different circuit topologies. In particular, the ERSFQ bias scheme, which utilizes inductive current distribution with JJs as current regulators and feeding JTLs as voltage references, is introduced.

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Vorheriges Kapitel Principals of Superconductive Circuits
Nächstes Kapitel Splitter Trees in Single Flux Quantum Circuits
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Metadaten
Titel
Rapid Single Flux Quantum (RSFQ) Circuits
verfasst von
Gleb Krylov
Tahereh Jabbari
Eby G. Friedman
Copyright-Jahr
2024
Buch
Single Flux Quantum Integrated Circuit Design

Print ISBN: 978-3-031-47474-3

Electronic ISBN: 978-3-031-47475-0

Copyright-Jahr: 2024

DOI
https://doi.org/10.1007/978-3-031-47475-0_5

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