FreeLists / si-list / [SI-LIST] Re: Capacitor Arrays for clock AC coupling

[steve weir <weirsi@xxxxxxxxxx>]

Mikhail,

NPO has a much lower Er, requiring many more plates for the same 
capacitance as X7R, and so a much lower ESR and higher Q.

Steve
At 11:17 AM 2/10/2006 -0500, Mikhail Matusov wrote:
>Steve,
>
>Can I ask you what's wrong with the NPOs provided that the value is
>sufficient?
>
>
>Thanks,
>=======================
>Mikhail Matusov
>Hardware Design Engineer
>Square Peg Communications
>Tel.: +1 (613) 271-0044 ext.231
>Fax: +1 (613) 271-3007
>http://www.squarepeg.ca
>
>
>
>----- Original Message -----
>From: "steve weir" <weirsi@xxxxxxxxxx>
>To: <david@xxxxxxxxxxxxxx>; "SI-LIST" <si-list@xxxxxxxxxxxxx>
>Sent: Friday, February 10, 2006 10:55 AM
>Subject: [SI-LIST] Re: Capacitor Arrays for clock AC coupling
>
>
> > David,
> >
> > My "donts'":
> >
> > Don't line up those arrays in a big line.
> >
> > Don't worry about tolerance between the caps.
> >
> > Don't use NPO
> >
> > Don't use a higher value than necessary.
> >
> > Don't forget to think in terms of fields.
> >
> > Good luck.
> >
> > Steve.
> >
> > At 01:43 PM 2/10/2006 +0000, David Greig wrote:
> > >Hi List,
> > >
> > >Apart from "don't do it!", would anyone care to share their experiences
> > >(bad or otherwise) of using 2 capacitor arrays for
> > >differential clock coupling?
> > >The parts in mind are 0504 arrays, NP0 100p or X7R 10n, 10% tol. There
>are
> > >no supporting S params or models from the
> > >manufacturers that I have contacted.
> > >
> > >Best Regards
> > >
> > >David Greig
> > >
> > >------------------------------------------------------------------
> > >To unsubscribe from si-list:
> > >si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
> > >
> > >or to administer your membership from a web page, go to:
> > >http://www.freelists.org/webpage/si-list
> > >
> > >For help:
> > >si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
> > >
> > >List FAQ wiki page is located at:
> > >                 http://si-list.org/wiki/wiki.pl?Si-List_FAQ
> > >
> > >List technical documents are available at:
> > >                 http://www.si-list.org
> > >
> > >List archives are viewable at:
> > >                 http://www.freelists.org/archives/si-list
> > >or at our remote archives:
> > >                 http://groups.yahoo.com/group/si-list/messages
> > >Old (prior to June 6, 2001) list archives are viewable at:
> > >                 http://www.qsl.net/wb6tpu
> > >
> >
> > ------------------------------------------------------------------
> > To unsubscribe from si-list:
> > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
> >
> > or to administer your membership from a web page, go to:
> > http://www.freelists.org/webpage/si-list
> >
> > For help:
> > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
> >
> > List FAQ wiki page is located at:
> >                 http://si-list.org/wiki/wiki.pl?Si-List_FAQ
> >
> > List technical documents are available at:
> >                 http://www.si-list.org
> >
> > List archives are viewable at:
> > http://www.freelists.org/archives/si-list
> > or at our remote archives:
> > http://groups.yahoo.com/group/si-list/messages
> > Old (prior to June 6, 2001) list archives are viewable at:
> >   http://www.qsl.net/wb6tpu
> >
> >
>
>
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>http://www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>List FAQ wiki page is located at:
>                 http://si-list.org/wiki/wiki.pl?Si-List_FAQ
>
>List technical documents are available at:
>                 http://www.si-list.org
>
>List archives are viewable at:
>                 http://www.freelists.org/archives/si-list
>or at our remote archives:
>                 http://groups.yahoo.com/group/si-list/messages
>Old (prior to June 6, 2001) list archives are viewable at:
>                 http://www.qsl.net/wb6tpu
>

------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List FAQ wiki page is located at:
                http://si-list.org/wiki/wiki.pl?Si-List_FAQ

List technical documents are available at:
                http://www.si-list.org

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu