Patent ID: 9448288
Filing Date: 2016-09-20
CPC Classification: G01D,G01R

Claim Text:
1. A magnetic field sensor, comprising: a plurality of magnetic field sensing elements, each one of the plurality of magnetic field sensing elements having a respective plurality of contacts, wherein the plurality of magnetic field sensing elements is configured to generate a plurality of magnetic field signals, each magnetic field signal responsive to a magnetic field; a sequence switches circuit coupled to the plurality of magnetic field sensing elements, wherein the sequence switches circuit is coupled to receive a control signal and, in response to the control signal, the sequence switches circuit is configured to sequentially select from among the plurality of magnetic field signals to generate a sequenced output signal representative of sequentially selected ones of the plurality of magnetic field signals; a memory device configured to store a plurality of potentiometer control values; and a variable potentiometer coupled to the sequence switches circuit, wherein the variable potentiometer is configured to attenuate an offset of each one of the plurality of magnetic field signals within the sequenced output signal by using a respective plurality of offset attenuation factors responsive to one or more of the plurality of potentiometer control values, wherein each one of the plurality of offset attenuation factors is related to a respective error voltage of a respective one of the plurality of magnetic field signals.