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DS90LV047A: Sub-LVDS signal level conversion operation using DS90LV047ATMTC

osamu.morikawa
Prodigy 10 points
Part Number: DS90LV047A
Other Parts Discussed in Thread: DS90LV001

Hello,TI_E2E.

Please tell me the answers to the three questions in the attached file.

TI_E2E_DS90LV047A_20230523.pdf

TI_E2E_DS90LV047A_20230523.pdf

  • 0
    TI__Guru 51346 points

    Hi Osamu,

    Please help give until tomorrow for further clarification from the appropriate engineer, thanks.

    Best Regards,

    Michael.

  • +1
    TI__Mastermind 23020 points

    Hello Osamu,

    Sorry for the late response. See my answers below.

    1) No, there are no issues with adding resistors for level conversion. Just have to ensure the equivalent resistance on each output pin is 50Ω.

    2) At higher frequencies the amplitude could decrease but not below the min differential output voltage which is 1.125V

    3) No there isn't a minimum frequency specification on the DS90LV047A and DS90LV001

    We do have an app note that shows how to convert LVDS to SubLVDS. See SNLA353. If it's feasible on your board, can you try the resistor network to appears in the app note and see if it resolves the issue? Thanks!

    Regards,

    Josh