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      A Wired-AND Current-Mode Logic Circuit Technique in CMOS for Low-Voltage, High-Speed and Mixed-Signal VLSIC

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      Author(s)
      Ungan I.E.
      Aşkar, M.
      Date
      1997
      Source Title
      Analog Integrated Circuits and Signal Processing
      Print ISSN
      0925-1030
      Volume
      14
      Issue
      1-2
      Pages
      59 - 70
      Language
      English
      Type
      Article
      Item Usage Stats
      135
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      Abstract
      A wired-AND current-mode logic (WCML) circuit technique in CMOS technology for low-voltage and high-speed VLSI circuits is proposed, and a WCML cell library is developed using standard 0.8 micron CMOS process. The proposed WCML technique applies the analog circuit design methodologies to the digital circuit design. The input and output logic signals are represented by current quantities. The supply current of the logic circuit is adjustable for the required logic speed and the switching noise level. The noise is reduced on the power supply lines and in the substrate by the current-steering technique and by the smooth swing of the reduced node potentials. Precise analog circuits and fast digital circuits can be integrated on the same silicon substrate by using the low noise property of the WCML. It is shown by the simulations that at low supply voltages, the WCML is faster and generates less switching noise when compared to the static-CMOS logic. At high speeds, the power dissipation of the WCML is less than that of the static-CMOS logic.
      Keywords
      Analog logic
      Current-mode
      High-speed
      Low-power
      Low-voltage
      Mixed-signal
      Wired-logic
      Design
      Digital circuits
      Electric currents
      Energy dissipation
      Logic circuits
      Spurious signal noise
      VLSI circuits
      Analog logics
      CMOS integrated circuits
      Permalink
      http://hdl.handle.net/11693/25529
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      • Department of Electrical and Electronics Engineering 3702
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