6 External Field Mitigation

Because external ambient fields are always present to some magnitude in an operating setting, knowing how to compensate for them or mitigate their influence is necessary for ensuring good measurement accuracy. Aside from placing distance between the magnetic sources and the TMCS110x device, there are a few general methods that may be applied to minimize the impact of external fields. As mentioned in Section 5, proper spacing and isolation on the board itself is a straightforward method here. Another method is to provide shielding to effectively divert the field away from the Hall sensor. Finally, calibration in post processing may be another potential option to investigate.