Hall sensors having forced sensing nodes

摘要

Embodiments relate to forced spinning Hall sensors. In embodiments, forced Hall sensors can provide reduced residual offset, lower current consumption and improved or complete rejection of nonlinear backbias effects when compared with conventional approaches.

主权项

1. A method comprising:
applying a bias signal to a first node of a Hall plate; forcing a voltage level at second and third nodes of the Hall plate to a fixed value; measuring a differential signal in each of first and second feedback circuits coupled, respectively, to the second and third nodes; and determining a magnetic field output signal from the differential signals.