From: Mike Hughes (email@example.com)
Date: Tue Nov 09 1999 - 09:16:21 PST
When using power/ground planes as capacitors for decoupling, decreasing the
distance between them increases the capacitance. Is there any reason why you
should not use the minimum possible spacing? In other words, is it possible to
have too much capacitance? How low can resonance occur? (Disregard, cost and
What is the effective area for this type of capacitance? If you have 10"x10"
planes with one device in the middle, how much of that 100sq" will help decouple
the device? What if the device is at the edge or corner of the planes?
-- ================================ Mike Hughes Product/Test Engineer High Speed Conversion Analog Devices, Inc.
Phone 781-937-2370 Fax 781-937-1011 mailto:firstname.lastname@example.org http://www.analog.com ================================
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