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AFE4490: Regarding the AFE4490 sample timing

Norihiro Yoshii
Prodigy 80 points
Part Number: AFE4490

Tool/software:

What happens if you accidentally set the AFE4490 sample timing to be simultaneous when shifting it by setting it?
The relevant section is
Page 34 of the datasheet
Figure 60. AFE Control Signals.

  • 0
    TI__Intellectual 1640 points

    Hello Yoshii-san,

    The AFE4490 does not support overlapping sample periods--the AFE4490 only contains one photodiode, so it cannot convert simultaneous samples since all samples are collected by the same photodiode.

    Regards,

    Payton

  • +1
    Prodigy 80 points

    Thank you for getting in touch.
    I would also like to know the following.

    I am referring to an AFE4490 that has been configured previously and is working correctly.
    Will the AFE4490 be damaged by duplicate samples due to a configuration error?

    If I revert to a previous setting, will it work correctly?

    For example, if I make a mistake in the settings and duplicate samples.
    After this, I turn off the power and return the settings to how they should work.
    Will the AFE4490 be damaged as a result and no longer work correctly?

  • 0 in reply to Norihiro Yoshii
    Prodigy 80 points 
    I'm sorry that I misjudged the situation the first time I asked the question.
  • 0 in reply to Norihiro Yoshii
    TI__Intellectual 1640 points

    Hello Yoshii-san,

    The AFE4490 should not be damaged by improperly overlapping sample periods, and should work correctly if reverted to previous settings. To initialize the registers in the AFE4490 to their default values, you can follow the instructions in Section 8.5.2.4 of the datasheet.

    Regards,

    Payton