[SI-LIST] AC coupling Capacitor

  • From: <jain.nitin@xxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Thu, 25 May 2006 16:33:58 +0530

 Hello,

For a gigabit differential pair AC coupling capacitor is used. But what
exactly is the use of AC coupling capacitors? I believe that they are
used when the bias voltage of driver & receiver are different.=0D

Also where exactly AC coupling capacitors should be placed when the
differential trace is running on a backplane from one daughter card to
other (at driver end or at receiver end).

What will happen if two AC coupling caps are used. One at driver side
and other at receiver side.

With regards,
Nitin


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