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ADC12DJ3200EVM: What is the frequency response of the ADC with the EVM?

Alex Wargo
Prodigy 230 points
Part Number: ADC12DJ3200EVM
Other Parts Discussed in Thread: ADC12DJ3200

Hello,

On page 1 of the datasheet for ADC12DJ3200 (SLVSD97) there is a plot of the scalar frequency response of the ADC titled "ADC12DJ3200 Measured Input Bandwidth". Does this plot include the response of the EVM or is it just the ADC12DJ3200 IC by itself? Are there measurements of the frequency response of the ADC with the EVM?

Thanks,

Alex

  • 0
    TI__Guru* 91947 points

    Alex,

    We are looking into this.

    Regards,

    Jim

  • 0
    TI__Mastermind 20541 points

    Hi Alex,

    The plot in the datasheet is the frequency response of the ADC. 

    Please follow the link to the reference design 

    The Figure 14 in the document from link above Direct RF-Sampling Radar Receiver for L-, S-, C- and X-Band using ADC12DJ3200 Reference Design has frequency response of the ADC with the EVM.

    Regards,

    Neeraj 

  • 0 in reply to Neeraj Gill
    Prodigy 230 points

    Yes, Figure 14 is the plot I was looking for. It seems the EVM introduces a significant amount of ripple to the frequency response. This could have major implications on our project. Could you please tell me about the cause of this ripple, or how we might go about removing the ripple to utilize the smooth response that the ADC has by itself? I am wondering if there are any modifications we could make to our EVM, or if there are any other board designs that do not introduce this ripple.

    Thank you,

    Alex