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Original question:

AFE4404: Intermittent noise in AFE4404 data

AFE4404: PPG Data full of noise.

kim minseo
Intellectual 400 points
Part Number: AFE4404

Hi.

I'm developing with AFE4404 + SFH2703 + SFH7016.

Currently extracting IR & GREEN PPG data.

But strangely, data comes out like the picture below (GREEN Only)

Is there a problem with the settings?

Help me.

  • 0
    TI__Mastermind 49636 points

    Hello,

    For further debug, please share raw data and register configuration.

    Has the AFE register configuration tested with other LEDs like red, IR? Does the PPG data look ok for the Red or IR LEDs?

    What does the Y axis represent? One of the suggestions would be to test the AFE configuration with the TI evaluation board and check to see if it works.

  • 0 in reply to Praveen Aroul
    TI__Mastermind 49636 points

    Hello Kim,

    As I didn't hear back from you in a while I assume that your issue has been solved.

    Please go ahead and verify the given answer to also help other users that might run into the same issue.

    Note that I'll go ahead and close this thread. Replying to the thread will re-open it if necessary at some point.