Advantages and Pitfalls of Using Fractional N PLLs

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        Download        Date: 2003-02-02        Length: 00:60:00       Digg       Del.icio.us
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The rise of fractional N PLLs, and especially Sigma Delta Fractional PLLs brings the opportunity for significant performance enhancements in some applications, but other applications favor the use of integer PLLs. This presentation concentrates on performance criteria of lock time, phase noise and spur levels.

Topics covered in this online seminar include:

  • Basic Theory of Integer, Fractional N, and Sigma-Delta Fractional N PLLs
  • Lock Time and issues with cycle slipping
  • Phase noise comparison of integer and fractional PLLs
  • Fractional Spurs and a comparison with integer N PLL Spurs
  • Competitive Analysis for Some of National's Competitor's PLLs


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