The first step of the design is identifying the general design implementation. Define whether the magnet that needs to be detected is sliding past the sensor, moving head-on toward the sensor, or swinging toward the sensor on a hinge. Figure 8-1 shows examples for each of the aforementioned design implementations.

Figure 8-1 Design Implementations

With each implementation, the objective is to design the system such that the spatial coordinates of the transition region fall within the spatial coordinates associated with the B_OP maximum and B_RP minimum specifications. Figure 8-2 shows a head-on example that shows how the location corresponding to the device B_OPMAX and B_RPMIN fall within the desired transition region. To facilitate rapid design iteration, TI’s Magnetic Sense Simulator (TIMSS) webtool is leveraged in the following design examples.

Figure 8-2 Head-On Example