Magnetic sensor sensitivity matching calibration

A magnetic sensor device, comprising:

• a substrate having a surface;
• a first magnetic sensor disposed at a first location on, over, or in direct contact with the surface, the first magnetic sensor being configured for detecting a magnetic field;
• a second magnetic sensor disposed at a second location different from the first location on, over, or in direct contact with the surface, the second magnetic sensor being configured for detecting a magnetic field;
• one or more inductors disposed over the substrate surface and located to provide a magnetic field to the first magnetic sensor and to the second magnetic sensor;
• and
• a magnetic sensor controller having a control circuit for controlling the first magnetic sensor, the second magnetic sensor, and the one or more inductors;
• wherein the control circuit includes circuitry adapted:
• for controlling the first magnetic sensor to measure a first magnetic field and the one or more inductors to provide a fifth magnetic field;
• for controlling the first magnetic sensor to measure a third magnetic field and the one or more inductors to provide a sixth magnetic field;
• for controlling the second magnetic sensor to measure a second magnetic field and the one or more inductors to provide the fifth magnetic field;
• for controlling the second magnetic sensor to measure a fourth magnetic field and the one or more inductors to provide the sixth magnetic field;
• for calculating a relative sensitivity matching value that converts magnetic field values measured by the first magnetic sensor to a comparable magnetic field value measured by the second magnetic sensor or that converts magnetic field values measured by the second magnetic sensor to a comparable magnetic field value measured by the first magnetic sensor.