Angle sensors, systems, and methods

A magnetic field angle sensor comprising:

• a magnet rotatable about an axis of rotation;
• a plurality of sensor units arranged proximate the magnet and spaced apart from one another about the axis of rotation by (360 degrees/n), where n is the number of sensor units and is greater than or equal to 2, wherein each of the at least two sensor units comprises two magnetic field sensor elements spaced apart from each other, each responsive to the same magnetic field component induced by the magnet, wherein each of the at least two sensor units comprises a substrate associated with the respective sensor unit in which the two magnetic field sensor elements are provided and a respective package associated with the respective sensor unit;
• and
• circuitry coupled to the plurality of sensor units, wherein the circuitry is configured to receive output signals from each of the two magnetic field sensor elements for the at least two sensor units, and wherein the circuitry is configured to determine, for each of the at least two sensor units, a first coarse estimation of an angle of rotation of the magnet based on:
• a sum of output signals of the two magnetic field sensor elements of the respective sensor unit, and a difference of output signals of the two magnetic field sensor elements of the respective sensor unit, and
• wherein the circuitry is further configured to determine a second refined estimation of the angle of rotation of the magnet from the first coarse estimation of at least two of the sensor units.