[SI-LIST] measuring internal signals on a chip

From: Doug Smith <doug@xxxxxxxxxx>
To: SI-List <si-list@xxxxxxxxxxxxx>
Date: Wed, 02 Jul 2003 16:13:38 -0700
Hi All,

Would you like to measure risetimes of internal signals on an IC in a
package? Something like this is possible using E-field coupling.

Most of my articles on noise touch on magnetic field coupling, but 
this month's Technical Tidbit presents a simple method of measuring 
E-field coupled IC chip noise. Such a measurement can be a useful 
troubleshooting tool for designers and EMC personnel as well. One can 
even see internal risetimes on the chip.

Abstract: Measuring noise coupled onto a copper foil patch applied to 
a chip package can yield useful data. A method of measurement is 
suggested and data presented. The data from such a measurement can be 
useful for design troubleshooting as well as EMC work. Uses related to 
reliable system operation and as well as conclusions for EMC 
compliance are presented.

As usual, the link to the article is the picture of the experimental 
setup at the bottom of the homepage at http://emcesd.com.

Doug

-------------------------------------------------------

I will be teaching some of my "tricks" this year at:

Practical Implementation of EMC:
Ideas You Can Use In Your Designs Tomorrow
http://www.elliottlabs.com/services/seminars/sym2003.htm
August 17, 2003 in Boston, MA just before the IEEE EMC Symposium
(with co-presenter Michael King)

EMC, Design, and High Frequency Measurements
http://emcesd.com/seminars/index.htm
September 8-10, 2003 in Orange County, CA, USA
(with co-presenter Michael King)

High Frequency Measurements and Noise in Electronic Circuits
http://www.conted.ox.ac.uk/ousep/courses/02hfm.html
November at Oxford University in England
December (details later) in Los Gatos, CA, USA

I also teach private seminars on-site by request. See 
http://emcesd.com/hfmcweb.htm for a description.

Have a good month,

Doug
-- 
-------------------------------------------------------
     ___          _       Doug Smith
      \          / )      P.O. Box 1457
       =========          Los Gatos, CA 95031-1457
    _ / \     / \ _       TEL/FAX: 408-356-4186/358-3799
  /  /\  \ ] /  /\  \     Mobile:  408-858-4528
|  q-----( )  |  o  |    Email:   doug@xxxxxxxxxx
  \ _ /    ]    \ _ /     Website: http://www.dsmith.org
-------------------------------------------------------

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[SI-LIST] measuring internal signals on a chip

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