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TMAG6180-Q1: TMAG6180-Q1

Ran Litver
Prodigy 60 points
Part Number: TMAG6180-Q1

Tool/software:

Is it an :"absolute sensor":

The component suits me for two main reasons: 0.4 degree accuracy and a 360 degree range.

What bothers me is that it is not stated that the measurement is absolute at waking up.

The need for my project is that when the component receives power and wakes up, it will know absolutely where it is located.

That is, upon waking up, it will create the correct angle and quadrant in which it is located without the need for movement.

Is this indeed a feature of the component?

  • 0
    TI__Mastermind 21120 points

    Ran,

    Thanks for your question on E2E. The device should create the correct angle information you need at power up. 

    The AMR element which generates the sine and cosine outputs has a 180 degree cycle.  The AMR element is sensitive to the angle of the magnetic field vector with peak impedance when the field is parallel to the direction of current through the sensor and at a minimum when the field is perpendicular to the current. Once the sensor is fully powered up, this should respond immediately.

    With the use of the Q0 and Q1 outputs you can resolve which quadrant the magnetic field vector is directed in.  The Q0 and Q1 outputs are generated by an integrated 2D Hall-effect latch, which will be updated appropriately at power-up as well. 

    There is a short ton period you must wait to be sure that the device is fully initialized and the results are valid, but you should not need to move the magnet to get started.

    Thanks,

    Scott