[SI-LIST] Re: Opening in Ground Plane
- From: narasimha rao <narasimharaopatil@xxxxxxxxx>
- To: Mohamad Haghtalab <mohaghtalab@xxxxxxxxx>, si-list@xxxxxxxxxxxxx, Andrew Holme <andrew@xxxxxxxxxxxxxxxxxx>
- Date: Sun, 10 May 2009 20:51:36 -0700 (PDT)
This is also provides a seperation for Digital and Analog signals' return path.
Regards,
Narasimha
--- On Sun, 5/10/09, Andrew Holme <andrew@xxxxxxxxxxxxxxxxxx> wrote:
From: Andrew Holme <andrew@xxxxxxxxxxxxxxxxxx>
Subject: [SI-LIST] Re: Opening in Ground Plane
To: "Mohamad Haghtalab" <mohaghtalab@xxxxxxxxx>, si-list@xxxxxxxxxxxxx
Date: Sunday, May 10, 2009, 3:46 PM
This is often recommended in datasheets and application notes of high-speed
amplifiers to reduce stray capacitance.
Rgds,
Andrew.
----- Original Message -----
From: "Mohamad Haghtalab" <mohaghtalab@xxxxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Sunday, May 10, 2009 9:54 AM
Subject: [SI-LIST] Opening in Ground Plane
Hi all
In the Evaluation Board of an A/D we have seen there is an opening in some
area in the ground plane (just after TOP layer) beneath the analog
differential input.
the figures of the first 3 layers are attached.
what could be the reasons of designer for doing so?
Best Regards.
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