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Publication Detail
Enhanced modular CMOS current-mode winner-take-all network
  • Publication Type:
    Conference
  • Authors:
    Demosthenous A, Akbari-Dilmaghani R, Smedley S, Taylor J
  • Publisher:
    IEEE
  • Publication date:
    1996
  • Place of publication:
    Piscataway, US
  • Pagination:
    402, 405
  • Published proceedings:
    Proceedings of the Third IEEE International Conference on Electronics, Circuits, and Systems: ICECS '96, October 13-16, 1996, Rodos Palace Hotel and Convention Center, Rodos, Greece
  • Volume:
    1
  • ISBN-10:
    078033650X
  • Status:
    Published
  • Language:
    English
Abstract
A CMOS modular high-speed current-mode 2-input Winner-Take-All (2-WTA) circuit for use in VLSI tree-structure WTA networks is described. The classification speed of the design is not input pattern dependent, but is a function of the value of the largest current input only. The complexity of the proposed WTA is O(M), but unlike other architectures, mismatch errors accumulate at a rate proportional to log 2M. Since for large M this is a slowly increasing function of M, the proposed arrangement is well suited to large WTA systems. Simulations show that the proposed circuit can resolve input currents differing by less than 1μA with only a small loss of operating speed. Detailed simulations and measured results of a single 2-WTA cell and of a complete 8-input tree WTA are presented.
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