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Spread spectrum clock generation for reduced electro-magnetic interference in consumer electronics devices | IEEE Journals & Magazine | IEEE Xplore
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Spread spectrum clock generation for reduced electro-magnetic interference in consumer electronics devices


Abstract:

For better electro-magnetic interference (EMI) reduction with minimum hardware increase, a sawtooth dual-tone modulation profile has been applied to spread spectrum clock...Show More

Abstract:

For better electro-magnetic interference (EMI) reduction with minimum hardware increase, a sawtooth dual-tone modulation profile has been applied to spread spectrum clock generation (SSCG) phase locked loop (PLL). The SSCG PLL implemented in a 0.18 μm CMOS process shows the 23.8 dB EMI reduction. This result shows that proposed modulation profile provides 3.5 dB better EMI reduction with 39% increased hardware than the conventional triangular modulation profile. For fair comparison of various modulation profiles, a figure of merit (FoM) is introduced and the proposed one shows the best FoM among various modulation profiles.
Published in: IEEE Transactions on Consumer Electronics ( Volume: 56, Issue: 2, May 2010)
Page(s): 844 - 847
Date of Publication: 15 July 2010

ISSN Information:


References

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