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AFE4300EVM-PDK: Testing Problem

NISHANT GUPTA
Prodigy 160 points
Part Number: AFE4300EVM-PDK


On Testing the Board,

DAC Output at Pin No.19 is not coming

Also Vref 17 is not coming

We have checked the User Guide and Appln Notes,

Kindly advice how to Test the Board so we can get proper result.

  • 0
    TI__Mastermind 49986 points

    Hello Nishant,

    I am not sure how the device is configured.

    When you write to register address 0x09, a value of 0x6006, you are turning on the BCM front end.

    In this case, you should measure 1.72V on TP4. This is the VREF voltage.

    If you write to register 0x09, a value of 0x6004, you are turning on the weigh scale front end.

    In this case, you should measure 1.72V on J54, pins 2 or 3. This is the VLDO voltage.

    If the above is working as expected, then you can follow section 6 in the user guide for power up and testing the weigh scale or BCM front end.