PCB
PCB
N
S
N
S
Figure 2-10. DRV5055 Sensitivity
An alternative to setting tight controls for the mechanical assembly using the TO-92 package is to provide
vertical offset for the sensor location which results with a component of the magnetic field vector directed
vertically.
Figure 2-11. Off-Axis Sensor Alignment
The result is an alignment which is no longer coplanar to the magnet center. This placement is referred to as
off-axis (or out-of-plane). In effect, all placements which are not coplanar to the magnet or centered on the
axis of rotation fall into this category. The key characteristic is that the magnetic field vector has a sinusoidal
component in all three axes. As a result, there is a wide range of locations suitable for the SOT-23 package
option.
System Overview
10
Absolute Angle Encoder Reference Design With Hall-Effect Sensors for
Precise Motor Position Control
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