[SI-LIST] Re: Routing diff pair HDMI signals at 85 Ohms
- From: Sen Velmurugan <sen.velmurugan@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Sun, 16 Dec 2012 22:33:35 -0800
There is an Intel app note on this for PCI express bus.
Thanks
Sen
On 12/16/2012 10:06 PM, FreeLists Mailing List Manager wrote:
> ----------------------------------------------------------------------
>
> Msg: #1 in digest
> From: miner_tom Cipollone <tom_cip_11551@xxxxxxxxxxx>
> Subject: [SI-LIST] Routing diff pair HDMI signals at 85 Ohms as opposed to 100
> Date: Mon, 17 Dec 2012 00:19:24 +0000
>
> I was told recently that in order to help reduce radiated emissions in HDMI
> signals, routed from a PCB to an HDMI connector, that it was better to route
> the signals at 85 Ohms differential as opposed to 100 Ohms differential.
>
>
> The contention was that with added connector L/C the overall average
> impedance normalized closer to 100 Ohms.
>
> Is there any credence to this? Is there any research material that agrees
> with this?
>
>
> (Hi Nazish)
>
> Thank You
> Tom
>
>
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