SBAA449B October   2020  – October 2021 TMAG5110 , TMAG5110-Q1 , TMAG5111 , TMAG5111-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Latch Response of the 2D Hall Effect
  4. 3Two Axis Sensor Consideration
    1. 3.1 Magnet Selection
      1. 3.1.1 Pole Count
      2. 3.1.2 Magnet Strength
    2. 3.2 Sensor Selection
      1. 3.2.1 Axes of Sensitivity
        1. 3.2.1.1 In-Plane Sensor Alignment
        2. 3.2.1.2 Out-Of Plane Sensor Alignment
      2. 3.2.2 Sensor Placement
        1. 3.2.2.1 On-Axis Magnetic Field
        2. 3.2.2.2 In-Plane Magnetic Field
        3. 3.2.2.3 Out-of-Plane Magnetic Field
      3. 3.2.3 Sensitivity Selection
  5. 4Optimizing for Accuracy
    1. 4.1 Optimizing Placement for Accuracy
    2. 4.2 Optimizing a Magnet for Accuracy
  6. 5Application Implementation
  7. 6Summary
  8. 7References
  9. 8Revision History

3.2.1.1 In-Plane Sensor Alignment

The outer edge of the magnet is the area where the magnetic field is the strongest. Placing the sensor on the outer edge of the magnet then allows the most flexibility in air gap and sensitivity selection. The following different figures show how to use the different versions of TMAG5110 and TMAG5111 with the magnet placed adjacent to the outer edge (In-Plane).

Option A - X and Y axes sensitivity enables the sensor to be positioned in the same plane as the ring magnet. The sensor can be positioned facing the magnet or also looking at the magnet from the side. The device can also be turned at 180° along the Z axis.
GUID-ED4408D2-4209-4005-AF1A-F6263E0EA0E7-low.pngFigure 3-6 XY Outer Edge 1
GUID-3C0F15AD-6B09-4CD7-8226-9B2309B74AF4-low.pngFigure 3-7 XY Outer Edge 2
Option B - Z and X axes enable the sensor to be positioned at the top of the package, facing the ring magnet or the front side of
the device facing the magnet. The device
can also be turned at 180° along the Z axis.
GUID-1DCAE842-D8D8-47A6-868F-EBF47E7C24D0-low.pngFigure 3-8 ZX Outer Edge 1
GUID-C3392458-71F6-417D-A5AC-C21649DC0EFF-low.pngFigure 3-9 ZX Outer Edge 2
Option C - Z and Y axes enable the sensor to be positioned at the top of the package, facing the ring magnet or the side of the device facing the magnet. The device can also be turned at 180° along the Z axis.
GUID-D49E8F9B-4BA6-44B2-A13A-BFEB0E1F7418-low.pngFigure 3-10 ZY Outer Edge 1
GUID-22C100A6-8CEA-496D-95DE-26BF0A0EAFE2-low.pngFigure 3-11 ZY Outer Edge 1