Clock repeater characterization for jitter-aware clock tree synthesis

  • Authors:
  • Monica Figueiredo;Rui L. Aguiar

  • Affiliations:
  • Instituto Politécnico de Leiria, Escola Superior de Tecnologia e Gestão;Dpt. Electrónica e Telecomunicações, Instituto de Telecomunicações, Universidade de Aveiro, Leiria, Aveiro, Portugal

  • Venue:
  • PATMOS'09 Proceedings of the 19th international conference on Integrated Circuit and System Design: power and Timing Modeling, Optimization and Simulation
  • Year:
  • 2009

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Abstract

This paper presents a simple jitter model for clock repeaters. The model is scalable and technology independent, which makes it suitable for integration in current clock tree synthesis algorithms. It is based on the timing characterization of a reference inverter, which can be performed for different process corners to account for process variability. Simulation results show that the model is accurate to within 10% for the most common inverter and NAND based repeaters.