• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 47 subscribers
  • Views 129 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADC12DJ5200RF: Question about Foreground Calibration when Changing JMODEs on ADC12DJ5200RF

jeongju Go
Prodigy 160 points
Part Number: ADC12DJ5200RF


Tool/software:

Dear TI Support Team,

I am currently using the ADC12DJ5200RF and would like to ask about foreground calibration in relation to JMODE switching.

After performing a foreground calibration for a certain JMODE, I plan to change the JMODE to a different setting after sometime. Since the decimation setting may also change when switching JMODEs, I would like to confirm whether it is necessary to run foreground calibration again after the change, or if the previous calibration results remain valid.

Additionally, if there is information available about the typical time required for foreground calibration, could you please share it with me?

Thank you very much for your support.

Best regards,
Jeongju Go

  • 0
    TI__Mastermind 41940 points

    Hi Jeongju,

    Yes, each time the JMODE or ADC configuration is changes, it would be advised to also recalibrate the ADC.

    In terms of time, you can estimate the calibration to be on the order of ~200mSec.

    Regards,

    Rob

  • 0 in reply to Rob Reeder
    Prodigy 160 points

    Dear Rob,

    Thank you very much for your previous clarification regarding foreground calibration.
    I would like to ask one additional follow-up question.

    If foreground calibration is not performed after changing the JMODE, what kind of issues or performance degradation might occur (e.g., in terms of accuracy, linearity, or signal stability)?

    I would greatly appreciate your guidance on this matter.

    Thank you again for your kind support.

    Best regards,
    Jeongju

  • 0 in reply to jeongju Go
    TI__Mastermind 41940 points

    Hi Jeongju,

    The device provides foreground and background calibration options for gain, offset and static linearity errors. This is in the datasheet on page 60.

    Regards,

    Rob