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Subject: Re: Guard rings and ground planes

Date: 06/13/02 at 9:49 PM
Posted by: John Dunn - Consultant
E-mail: ambertec@ieee.org
Message Posted:

In Reply to: Re: Guard rings and ground planes posted by Russ Kincaid on 06/13/02 at 9:26 PM:

Hi fellas.

One caution: Guard rings are often tied to ground, but are not necessarily always tied there! There are other possibilities.

For example, in a voltage follower where an op-amp's inverting input pin is connected directly to the output for non-inverting, unity gain, a guard ring around the non-inverting input pin may be tied to the output itself and not necessarily to ground.

John Dunn

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