Decoupling Capacitors - Layout Guidelines

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Source: TI SPMA036B–September 2011–Revised February 2013
Source: Effective Power /Ground Plane Decoupling for PCB - Dr. Bruce ArchambeaultMore Decoupling:Decoupling - Henry Ott

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Zed Board Power Decoupling Scheme

Research Links:

Zedboard Decoupling

Does the Zedboard bypass scheme make sense?

Bypass cap location is irrelevant?

How much Bypass does the Zynq have On-chip?

Are there flaws in the reasoning behind the Zedboard bypass scheme?

Measuring Bypass Capacitors on a Populated Board

Bypass cap location is irelevant

Bypass cap location is irelevant:

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Decoupling Caps

Decoupling Caps - Harry Ott:

“There are a large number of people that use and/or recommend the use of multiple capacitors of different values.  My recommendation is don't!  The problem with this approach is that the different value capacitors produce an anti-resonance, or cross-resonance (which produces an impedance peak).  Not a desirable result!  For those still considering the use of different value capacitors I would suggest that you look at the Bruce Archambeault and Clayton Paul papers referenced below.  The Bruce Archambeault paper in particular gives measured values of decoupling effectiveness, using a network analyzer.”

Source: http://www.hottconsultants.com/techtips/decoupling.html