[SI-LIST] Re: AC coupling capacitor placement - on board PCIedevices
- From: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
- To: "Alexandre.AMEDEO@xxxxxxxxxxxxxxxxxx" <Alexandre.AMEDEO@xxxxxxxxxxxxxxxxxx>, ibowden@xxxxxxxxxxxxxxxxx, m.ranjithkumar@xxxxxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Tue, 27 May 2008 10:11:49 -0700
Nope! Location of the capacitors doesn't affect signal quality. I use
0603 capacitors so I can see them. .01 uF is plenty big enough.
> [Original Message]
> From: <Alexandre.AMEDEO@xxxxxxxxxxxxxxxxxx>
> To: <ibowden@xxxxxxxxxxxxxxxxx>; <m.ranjithkumar@xxxxxxxxxxxxx>;
<si-list@xxxxxxxxxxxxx>
> Date: 5/27/2008 1:23:05 PM
> Subject: [SI-LIST] Re: AC coupling capacitor placement - on board
PCIedevices
>
> Hi all,=20
>
> So if I place my capacitor on the driver or in the receiver (both in =
> the same board) for an High Speed signal (2.5 to 6Gb/s) it doesn't =
> change the shape of my signal?
>
> Which value of capacitor is needed? Which package?
>
>
> Thank you for your help,=20
> Regards=20
>
> Alexandre AMEDEO
>
> -----Message d'origine-----
> De : si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]De la part de Bowden, Ivor
> Envoy=E9 : mercredi 12 mars 2008 17:25
> =C0 : M.Ranjith; si-list@xxxxxxxxxxxxx
> Objet : [SI-LIST] Re: AC coupling capacitor placement - on board PCIe
> devices
>
>
> For=3D20separate=3D20mother=3D20boards=3D20/=3D20plug=3D20in=3D20boards,=
> =3D20the=3D20caps=3D20=3D
> need=3D20to=3D20be=3D20on=3D20the=3D20TX=3D20lanes=3D20of=3D20each=3D20b=
> oard.
>
> For=3D20system=3D20boards=3D20where=3D20both=3D20PCIe=3D20devices=3D20ar=
> e=3D20on=3D20the=3D20s=3D
> ame=3D20board,=3D20the=3D20caps=3D20can=3D20be=3D20anywhere,=3D20but=3D2=
> 0it=3D20can=3D20be=3D20c=3D
> onvenient=3D20for=3D20probing=3D20to=3D20put=3D20them=3D20close=3D20to=3D=
> 20the=3D20RX=3D20pins=3D
> .
>
> -Ivor
>
> -----Original=3D20Message-----
> From:=3D20si-list-bounce@xxxxxxxxxxxxx=3D20[mailto:si-list-bounce@freeli=
> sts.or=3D
> g]=3D20On=3D20Behalf=3D20Of=3D20M.Ranjith
> Sent:=3D20Wednesday,=3D20March=3D2012,=3D202008=3D209:04=3D20AM
> To:=3D20si-list@xxxxxxxxxxxxx
> Subject:=3D20[SI-LIST]=3D20AC=3D20coupling=3D20capacitor=3D20placement=3D=
> 20-=3D20on=3D20bo=3D
> ard=3D20PCIe=3D20devices
>
> Hi=3D20All,
> What=3D20is=3D20the=3D20AC=3D20coupling=3D20capacitor=3D20placement=3D20=
> recommendation=3D20=3D
> for=3D20the=3D20on=3D20board=3D20PCIe=3D20devices.=3D20(Both=3D20the=3D2=
> 0devices=3D20are=3D20i=3D
> n=3D20same=3D20board).
> We=3D20have=3D20Midbus=3D20probe=3D20(soft=3D20touch=3D20pad)=3D20betwee=
> n=3D20the=3D20device=3D
> s.
> Thanks
> Ranjithkumar=3D20M.
>
> -------------------
>
> We=3D20recently=3D20installed=3D20the=3D20spam=3D20filter=3D20from=3D20A=
> baca.=3D20It's=3D20o=3D
> ver=3D2099%=3D20accurate.
> Check=3D20it=3D20out=3D20-=3D20http://www.abaca.com/success/story.cgi?do=
> main=3D3Dgda=3D
> tech.co.in
>
> -------------------
>
>
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