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SN65LVDS047: Bord to board solution

Takumi Suzuki1
Mastermind 8610 points
Part Number: SN65LVDS047
Other Parts Discussed in Thread: SN65LVDS048A, DS100BR410, SN65LVDS31, SN65LVDS390, SN65LVDS391, DS25BR440

Hi,

I would like to ask you to give me your advice about following system.

Q1) Is it possible to send data from board1 to board2 via board2 by LVDS? (around 30cm)

For example, "SN65LVDS047 + SN65LVDS048A" can do it?

Q2) Or should I use "repeater" on board2?

For example, "SN65LVDS047 - DS100BR410 - SN65LVDS048A" is better system?

The specification is as below.

    CH number : 4ch

    Data rates : over 480Mbps

    skew : as small as possible

Will you advise me how to make the system and recommend me appropriate solution, if possible?

And will you also tell me something material to explain LVDS solution?

Thank you very much for your support.

Best Regards,

  • 0
    TI__Genius 10250 points
    Hello Takumi-san,

    Q1. In principle it is possible, but the rate is fairly high and is pushing the limits of what SN65LVDS047 and SN65LVDS048A can support. You say the data rate is >480 Mbps, how high is the data rate? For higher rates, please consider SN65LVDS31 or SN65LVDS391 drivers and SN65LVDS390 receiver since they have faster rise/fall times.

    Q2. I believe it is better to add a repeater with equalization and preemphasis such as DS100BR410 or DS25BR440, due to the high rate, long distance, and the multiple connectors.

    Regards,
    Yaser