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ADC32RF42: poor harmonic performance and questions on correct configuration

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Replies: 15

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Part Number: ADC32RF42

Hi guys, 

My customer is asking about the ADC32RF42 that they have on a proto board. They are claiming that the harmonic performance is poor, and are asking for some help making sure they have things configured and calibrated correctly. 

They are also concerned with issues about freezing the offset corrector block. 

Is there like a config file or something in the GUI they can export for you guys to look to see how they have things configured? 

Thanks,

Brian 

  • In reply to Brian Antheunisse:

    Brian,

    We are waiting to here from the design team. I think there are a couple of registers that need to be set to prevent the ADC from notching out the signal at Fs/4 with this part and it is not occurring like it should by default.

    Regards,

    Jim

  • In reply to jim s:

    Ok, thank you. Let me know if you've heard from the design team yet.

    Regards,
    Brian
  • In reply to Brian Antheunisse:

    Hi,

    Has there been any progress on this issue?

    We are using the ADC32RF42 and have similar questions regarding interleaving correction.

    A few posts ago it was stated that in the 2 interleaved ADC architecture interleaving correction must be bypassed?

    Thanks

    -Brian

  • In reply to Brian Onorato:

    These are questions that we would greatly appreciate feedback on:

    1. Is this a two or four interleaved ADC architecture?

    2. If the answer to question 1 is two is interleaving correction possible?

    3. Our frequency plan places the signal of interest at Fs/4.  Can interleaving correction still be used in this case?

    Thanks

    -Brian

  • In reply to Brian Onorato:

    Brian,

    Still waiting on design team to comment, and Jim to relay here. 

    By the way, you will probably get better luck posting your own questions as a new post (at the top of this screen there should be a "ask related question" button). 

    Thanks,

    Brian A

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