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TMAG5170: TMAG5170 questions

Ella Zhang
Prodigy 330 points
Part Number: TMAG5170

Hi Team,

My customer has some question about the 3D Hall sensor.

1. If there is another magnet passing through the TMAG5170, will it have some error? Do we have some method to reduce the error?

2. If they want to use the 3D hall sensor in the joystick, will it have some advantages than the G sensor.

Best regards

Ella

  • 0
    TI__Mastermind 21120 points

    Ella,

    TMAG5170 will measure the actual field at the sensor location.  So if two magnets are present, their fields will interact and the sensor will capture the resulting field from the combination.  

    Depending on the setup, they may be able to define acceptable input ranges for each axes.  Then the device has programmable thresholds which may be used to verify the field stays within the acceptable range.  If the threshold crossing alert is set, then there would be reason to believe a second magnet is present and disregard the inputs.

    A G sensor is meant for measuring acceleration.  To implement accelerometer measurements with a magnetic sensor would require a mechanical system, such as a spring, which can translate acceleration to a specific position change.  If they can design a system with a reliably fast and consistent position change, then a 3D Hall effect sensor could be used here.  

    Thanks,

    Scott