SN65LVCP408: Reference Design, SDI, Vbb, and Eval

J Burk

Part Number: SN65LVCP408
Other Parts Discussed in Thread: LMH0324, , LMH0318

Hello!

I am trying to design somewhat of a multiple SDI switcher. Starting with the LMH0324 Equalizer, going to the SN65LVCP408, and then being reclocked and driven with the LMH0318.

TI support gave me a reference design of an old Eval Board (SN65LVCP408_418 EVM) but I would like to see another one if you have it!

I am mostly interested on the Vbb (pin 16) as I do not know how to wire this pin.

Also just to check, SN65LVCP408 is compatible with SDI signals as long as it has been equalized first correct?

Thanks!

-J

over 3 years ago

0 Nasser Mohammadi over 3 years ago

TI__Guru* 93670 points

Hi Burk,

For SDI applications and given pathological pattern, customers use DS25CP104 device. Please take a look at this part. Here is a link to the data sheet:

https://www.ti.com/lit/ds/symlink/ds25cp104a.pdf?ts=1624565203642&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526searchTerm%253Dds25cp104%2526nr%253D50

Regards,, Nasser

0 J Burk over 3 years ago in reply to Nasser Mohammadi

Prodigy 10 points

Hey Nasser,

A follow up question. It is possible to use multiple DS25CP104 devices and daisy chain them? In our design we want to use essentially a 5x3 Crosspoint. I see that 4x4 is the largest Crosspoint in that family of devices

Thanks, J

0 Nasser Mohammadi over 3 years ago in reply to J Burk

TI__Guru* 93670 points

Hi J,

We are not recommending multiple redrivers or equalizers being cascaded since this would accumulate random jitter.

Regards ,, nasser

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SN65LVCP408: Reference Design, SDI, Vbb, and Eval