SBAA510 October   2021 DRV5032 , TMAG5170 , TMAG5231 , TMAG5273

 

  1.   Trademarks
  2. 1Introduction
  3. 2Reed Switch Overview
  4. 3Hall Effect Sensor Overview
  5. 4Performance Comparison
  6. 5DRV5032 Test Setup and Results
    1. 5.1 DRV5032 Test Setup
    2. 5.2 Understanding the Results
    3. 5.3 DRV5032 Test Results
    4. 5.4 Front Approach Results
    5. 5.5 Side Approach
    6. 5.6 Tamper Susceptibility Testing Setup
    7. 5.7 Tamper Susceptibility Test Results
  7. 6Reed Switch Test Setup and Results
    1. 6.1 Reed Switch Test Setup
    2. 6.2 Reed Switch Test Results
    3. 6.3 Front Approach Results
    4. 6.4 Side Approach Results
    5. 6.5 Tamper Susceptibility Testing Setup
    6. 6.6 Reed Switch Tamper Susceptibility Test Results
  8. 7TMAG5170 Test Setup and Results
    1. 7.1 TMAG5170 Test Setup
    2. 7.2 TMAG5170 Test Results
    3. 7.3 TMAG5170 Tamper Susceptibility Testing Setup
    4. 7.4 TMAG5170 Tamper Susceptibility Test Results
  9. 8Summary

6.3 Front Approach Results

Figure 6-1 and Figure 6-2 show the resulting detection field for the Reed switch in the same views done for the DRV5032. Figure 6-1 shows the top-down view, while Figure 6-2 shows the side view. As shown, the Reed switch does have a larger detection distance over the DRV5032, but also has many more detection field variances, which can be unfavorable in security applications where these variances can give way to successful tampering attempts.

GUID-20210810-SS0I-NJJH-VQT2-62ZCT6NXV6GF-low.pngFigure 6-1 Reed Switch Front Approach Magnetic Detection Field Results: Top Down View
GUID-20210810-SS0I-SJ6F-7CS5-HL9FTK3MFSFS-low.pngFigure 6-2 Reed Switch Front Approach Magnetic Detection Field Results: Side View

Figure 6-3 shows a rotated view to capture detection range on all 3 axes. The detection range is very spontaneous and has no observable symmetrical properties.

GUID-20210810-SS0I-7LGJ-7T8Q-4ZTBWSFCTLSP-low.pngFigure 6-3 Reed Switch Front Approach Magnetic Detection Field Results: Off-Axis View