[SI-LIST] : Power Noise

Jon Keeble ([email protected])
Thu, 18 Mar 1999 10:08:06 +1000

This is a multi-part message in MIME format.

Content-Type: text/plain;
Content-Transfer-Encoding: quoted-printable

>Now, if the highest inductance part of the path is the pad/via, would =
>favor running (wide) traces from the cap directly to the device, since =
>eliminates two vias between the cap and the device? A wide, short path =
>has a few nH inductance (I think).

Hi Doug

There's no argument that minimising the length, and maximising the =
width, of the connection from C to planes minimises the inductance. Same =
goes for connecting component pads to planes. Both are important.

Between connections on a plane there is really a very low impedance.

The C between planes can be a very useful component as well, if they =
placed close together.