Two-Phase clocking and a new latch design for low-power portable applications

  • Authors:
  • Flavio Carbognani;Felix Bürgin;Norbert Felber;Hubert Kaeslin;Wolfgang Fichtner

  • Affiliations:
  • ETH, Zurich, Switzerland;ETH, Zurich, Switzerland;ETH, Zurich, Switzerland;ETH, Zurich, Switzerland;ETH, Zurich, Switzerland

  • Venue:
  • PATMOS'05 Proceedings of the 15th international conference on Integrated Circuit and System Design: power and Timing Modeling, Optimization and Simulation
  • Year:
  • 2005

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Abstract

The energy efficiency of a 0.25 μm general-purpose FIR filter design, based on two-phase clocking, versus a functionally equivalent benchmark, based on one-phase clocking, is demonstrated by means of measurements and transistor level simulations. Architectural improvements enable already a 20% energy savings of the two-phase clocking implementation. Yet, for the first time, the limitations imposed by the supply voltage (