Patent ID: 8793085

Claim:
A magnetic field sensor for sensing a position of an object, comprising: a semiconductor substrate having first and second parallel major surfaces; a sensing circuit disposed upon the semiconductor substrate and comprising a plurality of magnetic field sensing elements, wherein the plurality of magnetic field sensing elements configured to generate a respective plurality of magnetic field sensing element output signals responsive to a magnetic field having a direction component in an x-y plane parallel to the first major surface of the semiconductor substrate, wherein the sensing circuit further comprises one or more sensing circuit programmable circuit elements having a respective one or more sensing circuit programmable characteristics; an x-y direction component circuit disposed upon the semiconductor substrate, coupled to receive a first intermediate signal representative of the plurality of magnetic field sensing element output signals, and configured to generate an x-y angle signal indicative of an angle of the direction component of the magnetic field in the x-y plane, wherein the x-y direction component circuit comprises one or more x-y direction component circuit programmable circuit elements having a respective one or more x-y direction component circuit programmable characteristics; a rotation speed sensing circuit disposed upon the semiconductor substrate, coupled to receive a signal representative of the x-y angle signal, and configured to generate a rotation speed signal indicative of a rotation speed of the object, wherein the rotation speed sensing circuit comprises one or more rotation speed sensing circuit programmable circuit elements having a respective one or more rotation speed sensing circuit programmable characteristics; and a processor disposed upon the semiconductor substrate, coupled to receive the rotation speed signal, and configured to generate a module control signal in accordance with a value of the rotation speed signal to program selected ones of the one or more sensing circuit programmable characteristics, the one or more x-y direction component circuit programmable characteristics, or the one or more rotation speed sensing circuit programmable characteristics.