Signal Resolution of RSFQ Comparators

Timur V. Filippov; Yuri A. Polyakov; Vasili K. Semenov; Konstantin K. Likharev

doi:10.1109/77.403031

Signal Resolution of RSFQ Comparators

Timur V. Filippov
, Yuri A. Polyakov
, Vasili K. Semenov
, Konstantin K. Likharev

Physics and Astronomy

Stony Brook University

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

We have designed and tested a Rapid Single-Flux- Quantum (RSFQ) circuit for experimental measurement of the fluctuation-induced threshold uncertainty of switching of SFQ comparators, which are the most essential single components of the RSFQ logic devices, analog-to-digital converters, and digital SQUIDs. Statistical density of the switching events in comparators using externally-overdamped Nb-trilayer Josephson junctions has been found to be in a nice agreement with the distribution which follows from a simple theory based on a time-dependent harmonic-oscillator model of the device. Width of the distribution (i.e., the single-shot current resolution of the comparator) measured as a function of temperature in the range 1.7-4.2 K corresponds to fundamental (thermal/quantum) fluctuations, with no evidence of excess noise sources.

Original language	English
Pages (from-to)	2240-2243
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	5
Issue number	2
DOIs	https://doi.org/10.1109/77.403031
State	Published - Jun 1995

Access to Document

10.1109/77.403031

Cite this

@article{a70dc81997f24ce5896cf2c735823dd7,

title = "Signal Resolution of RSFQ Comparators",

abstract = "We have designed and tested a Rapid Single-Flux- Quantum (RSFQ) circuit for experimental measurement of the fluctuation-induced threshold uncertainty of switching of SFQ comparators, which are the most essential single components of the RSFQ logic devices, analog-to-digital converters, and digital SQUIDs. Statistical density of the switching events in comparators using externally-overdamped Nb-trilayer Josephson junctions has been found to be in a nice agreement with the distribution which follows from a simple theory based on a time-dependent harmonic-oscillator model of the device. Width of the distribution (i.e., the single-shot current resolution of the comparator) measured as a function of temperature in the range 1.7-4.2 K corresponds to fundamental (thermal/quantum) fluctuations, with no evidence of excess noise sources.",

author = "Filippov, \{Timur V.\} and Polyakov, \{Yuri A.\} and Semenov, \{Vasili K.\} and Likharev, \{Konstantin K.\}",

year = "1995",

month = jun,

doi = "10.1109/77.403031",

language = "English",

volume = "5",

pages = "2240--2243",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

number = "2",

}

TY - JOUR

T1 - Signal Resolution of RSFQ Comparators

AU - Filippov, Timur V.

AU - Polyakov, Yuri A.

AU - Semenov, Vasili K.

AU - Likharev, Konstantin K.

PY - 1995/6

Y1 - 1995/6

N2 - We have designed and tested a Rapid Single-Flux- Quantum (RSFQ) circuit for experimental measurement of the fluctuation-induced threshold uncertainty of switching of SFQ comparators, which are the most essential single components of the RSFQ logic devices, analog-to-digital converters, and digital SQUIDs. Statistical density of the switching events in comparators using externally-overdamped Nb-trilayer Josephson junctions has been found to be in a nice agreement with the distribution which follows from a simple theory based on a time-dependent harmonic-oscillator model of the device. Width of the distribution (i.e., the single-shot current resolution of the comparator) measured as a function of temperature in the range 1.7-4.2 K corresponds to fundamental (thermal/quantum) fluctuations, with no evidence of excess noise sources.

AB - We have designed and tested a Rapid Single-Flux- Quantum (RSFQ) circuit for experimental measurement of the fluctuation-induced threshold uncertainty of switching of SFQ comparators, which are the most essential single components of the RSFQ logic devices, analog-to-digital converters, and digital SQUIDs. Statistical density of the switching events in comparators using externally-overdamped Nb-trilayer Josephson junctions has been found to be in a nice agreement with the distribution which follows from a simple theory based on a time-dependent harmonic-oscillator model of the device. Width of the distribution (i.e., the single-shot current resolution of the comparator) measured as a function of temperature in the range 1.7-4.2 K corresponds to fundamental (thermal/quantum) fluctuations, with no evidence of excess noise sources.

UR - https://www.scopus.com/pages/publications/0029326584

U2 - 10.1109/77.403031

DO - 10.1109/77.403031

M3 - Article

AN - SCOPUS:0029326584

SN - 1051-8223

VL - 5

SP - 2240

EP - 2243

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2

ER -

Signal Resolution of RSFQ Comparators

Abstract

Access to Document

Other files and links

Fingerprint

Cite this