한국초전도학회:학술대회논문집

The Korean Superconductivity Society (한국초전도학회)
권호 표지

Balanced Comparator and Delta-Sigma Modulator with High-Tc Multilayer RSFQ Logic Circuits

고온초전도 다층박막 RSFQ 회로를 이용한 균형잡힌 비교기와 델타-시그마 모듈레이터

  • Chong, Yon-Uk (Department of Physics, Seoul National University) ;
  • Khim, Jeong-Gu (Department of Physics, Seoul National University) ;
  • Ruck, B. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich) ;
  • Dittmann, R. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich) ;
  • Horstmann, C. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich) ;
  • Engelhardt, A. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich) ;
  • Wahl, G. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich) ;
  • Oelze, B. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich) ;
  • Sodtke, E. (Institut fur Schicht-und Ionentechnik, Forschungszentrum Julich)
  • 정연욱 (서울대학교 자연과학대학 물리학과) ;
  • 김정구 (서울대학교 자연과학대학 물리학과) ;
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  • Published : 1999.08.18
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Abstract

We demonstrate small-scale high-T$_c$ superconductor RSFQ(Rapid Single Flux Quantum) circuits using multilayer bicrystal technology. An RSFQ balanced comparator is demonstrated with good current resolution, and its operating conditions are discussed in some detail. A single-loop delta-sigma modulator is realized adding a feedback loop to the comparator. The effect of the feedback is confirmed by dc measurement and simulation. A design of an RSFQ toggle flip-flop with the same multilayer bicrystal technology is suggested.

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