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AFE4400: AFE4400 cannot read blood oxygen values

jeno.zhang
Expert 2785 points
Part Number: AFE4400

Tool/software:

Hello，

The customer is using AFE4400 and cannot read blood oxygen values. The customer conducted chip exchange verification, and the problem was transferred with the chip. The following is a schematic diagram. Please help analyze the reason. Thanks！

  • 0
    TI__Guru 65526 points

    Hi Jeno,

    The AFE4400 only reports raw ADC conversion values and does not directly output O2 saturation. Can you share a sample of the data collected along with a complete register configuration?

    Also, please attach a high-resolution image of the schematic. The current one is not readable.

    Regards,

    Ryan