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Altera_Forum's avatar
Altera_Forum
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15 years ago

High speed DAC/ADC for Dev Kits?

Hey,

I am planning to buy a Stratix IV Dev Kit for my research project. I have found that there are 150/250 MSample/s ADC/DAC cards connected through this HSMC. The thing is I would require higher rates (1GS/s on both DAC and ADC). Where can I find compatibile cards?

BTW, there is no product inquiry contact form on Altera's website, what's with that?

Kind regards,

Marcin.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    --- Quote Start ---

    What about this:

    It should be possible to interleave two channels to obtain 1Gs or 4channels + Filtering.

    --- Quote End ---

    Do you think that interleaving two 500M channels would give a nice 1G channel? And also, as I see it, it would require some changes made directly to the card, wouldn't it? Both converter would have to be connected to the same input/output socket somehow, and their clocks should be 180 deg. shifted. Is this how you see it?
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Intersting similarity to my current work.

    We have our own mezzanine card with DAC/ADC running at 560MHz dual channels.

    The clocking is same to both ADC channels. The fpga receives the dual channels and processes them in parallel at 280Mhz.

    The bottle neck is the fpga speed. anything more than 300Mhz is unrealistic for stratix 4. In your case you might need to process 4 channels in parallel inside fpga. you can break the channels on DDR pins or serdes.

    One problem might be when DAC/ADC channels lose order(alignment) if not synchronised.