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ADC3444: ADC3444 and AM5728 interfacing through LVDS serial interface

Bilal Malik
Prodigy 270 points
Part Number: ADC3444
Other Parts Discussed in Thread: AM5728, , TLK10081, ADS58H43, ADS5263

Dear Team,


One of my customer want to use a high speed ADC (ADC3444 with LVDS serial interface) with the processor AM5728.


AM5728 has not an integrated LVDS interface.


Generally a FPGA is used to interface between the processor and the ADC.


And I suggested the solution below to my customer (LVDS to PCIe or USB3.0 through a FPGA).



My customer is looking for a solution without FPGA and he's wondering if the TLK10081 device can be used instead of the FPGA.

AM5728-PCIe <-> TLK10081 <-> ADC3444


Could you please help us to know if this solution can fit or any other suggestion you might have without FPGA?


Thank you very much for your help,
Regards,

  • 0
    TI__Mastermind 43860 points

    Hi BMA

    The TLK10081 can't convert the serialized LVDS output by the ADC3444 into a high bit rate serial data stream.

    I see that the AM5728 has parallel LVDS video input ports. It might be worth investigating whether those ports can accept the data output by the ADS58H83 which has parallel LVDS output.

    Best regards,

    Jim B

  • 0 in reply to Jim Brinkhurst1
    TI__Prodigy 270 points
    Dear Jim,

    Thank you for your reply.

    So you think a parallele LVDS interface directly connected to VIP High-Speed Interconnect might be a solution?

    there is a need of level shifter maybe?

    There is any application notes or material in order to implement that?

    Also for the new ADC that you are proposing is the reference correct? Because I am not able to find ADS58H83 it's maybe ADS58H43?

    thank you very much,

    Regards,
  • 0 in reply to Bilal Malik
    TI__Mastermind 43860 points

    Hi BMA

    I think it's best to contact the AM5728 support team to determine what is the best interface from a high speed ADC to that product.

    You are correct, I made I typo. I think I intended to say the ADS58H43. Another potential device would be the ADS5263.

    The best ADC choice will depend on the needed sample rate and number of channels, and what interface works best with the Sitara device.

    Best regards,

    Jim B

  • 0 in reply to Jim Brinkhurst1
    TI__Prodigy 270 points

    Dear JIm,

    Thank you very much for your reply

    Actually I have asked first at AM5728 support team for this issue but they told me to ask here.

    So I am little bit confused. :)

    There is any way to be aligned with both of you ? :)

    Regards,

  • 0 in reply to Bilal Malik
    TI__Mastermind 43860 points
    Hi BMA

    Sorry for the confusion and delay. I'll discuss with the Sitara team to determine the best approach.

    Can you confirm that the customer needs 4 ADC channels at 14 bits, and what sample rate (min and max) that they need? The ADC3444 runs at up to 125MSPS, but I'm not sure that is the sample rate that the customer needs.

    Best regards,
    Jim B
  • 0 in reply to Jim Brinkhurst1
    TI__Mastermind 43860 points
    Hi BMA
    It might also help to know the general application.
    Is the customer using the ADC for some type of video conversion, or is this not a camera/video type application?
    Regards,
    Jim B