Study on Single Flux Quantum Floating-Point Divider Based on Goldschmidt’s Algorithm

• Sanada, Akiyoshi

• Yamanashi, Yuki

• Yoshikawa, Nobuyuki

抄録

We investigated a Goldschmidt’s single flux quantum (SFQ) floating-point divider that is suitable for the implementation using the bit-serial pipelined SFQ circuit. We designed the bit-serial SFQ divider that outputs the 11-bit quotient. The simulation results show correct operation at the frequency of 50 GHz and bias margin of 80-125%. We also estimated dependence of latency and the number of Josephson junctions on accuracy of outputs. According to the estimation, double-precision SFQ divider can be designed using 27000 Josephson junctions, which can be implemented on one chip using the current SFQ circuit fabrication technology. Because of the small circuit area and multiplier-based hardware architecture, the investigated divider can be applied to build an SFQ graphical processing unit.

収録刊行物

• IEEE Transactions on Applied Superconductivity

  IEEE Transactions on Applied Superconductivity 29 (5), 1301904-, 2019-08

  IEEE

キーワード

• single-flux quantum logic
• superconducting integrated circuits
• Goldschmidt’s division algorithm

詳細情報

• CRID: 1050564288181499904
• NII論文ID: 120006606658
• NII書誌ID: AA11946236
• ISSN: 10518223
• ISSN: 15582515
• ISSN: 23787074
• DOI: 10.1109/tasc.2019.2902800
• Web Site: http://hdl.handle.net/10131/00012361
• Web Site: http://xplorestaging.ieee.org/ielx7/77/8626749/08657728.pdf?arnumber=8657728
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN