[SI-LIST] Re: Return Path Usage
- From: "Moeller, Merrick" <mmoeller@xxxxxxxxxxxxxxx>
- To: "Si-List (E-mail)" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 8 Sep 2003 15:22:30 -0500
Thanks Craig. That was what I had expected. I encountered some=20
strange wording.=20
-----Original Message-----
From: Clewell, Craig [mailto:cclewell@xxxxxxxxxxxxxx]
Sent: Monday, September 08, 2003 3:18 PM
To: Moeller, Merrick
Subject: RE: [SI-LIST] Return Path Usage
Merrick,=20
For all intent and purposes DC, VRef, Vcontrol, etc...are all ground. =
Think
about the frequency you are dealing with and the affect on impedance.
Reactance is not an issue at DC since the Real parts of the impedance =
are >>
than the reactive parts. The reactive parts are frequency dependant, =
and
the frequency of DC, etc... is zero for all intent and purposes.
One issue that may arise is ground bounce. Since you are going to have =
one
voltage on the ground plane on one side of the connector and possibly a
different voltage on the ground plane on the side that is holding the =
other
half of the connector there will be a difference in the ground plane
voltages. This is going to be pretty small, and is neglected quite =
often.
CC=20
-----Original Message-----
From: Moeller, Merrick [mailto:mmoeller@xxxxxxxxxxxxxxx]
Sent: Monday, September 08, 2003 3:53 PM
To: Si-List (E-mail)
Subject: [SI-LIST] Return Path Usage
What issues could arrise by using a return path for DC voltage, =
Reference
voltage, or on-off control voltage? Would low AC impedance path be
interupted or changed in any manner?=20
Regards,
Merrick M. Moeller=20
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=20
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