Preliminary Experiments for Power Supply Noise Reduction Using On-Board Stubs

Toru NAKURA  Makoto IKEDA  Kunihiro ASADA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E88-C   No.8   pp.1734-1739
Publication Date: 2005/08/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.8.1734
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Papers Selected from AP-ASIC 2004)
Category: 
Keyword: 
stub,  on-board,  power supply noise,  di/dt noise,  PRBS pattern,  

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Summary: 
This paper demonstrates a power supply noise reduction using on-board stubs. A quarter-length stub attached to the power supply line of an LSI chip works as a band-eliminate filter, and suppresses the power supply noise of the designed frequency. Preliminary experiments show that 87% of the designed frequency noise component is suppressed when stub patterns are written on a power supply area on a PCB board for a 1.25 GHz operating LSI. The results show the possibility of the stub on-chip integration when the operating frequency of LSIs becomes higher and the stub length becomes shorter.