Magnetic field sensor's measuring accuracy verifying method, involves positioning chip at field coil that is supplied with current, and adjusting current using measuring coil based on magnetic flow density based measured value

摘要

The method involves integrating a measuring coil into a semiconductor chip (2), and integrating a magnetic field-sensitive electrical circuit into another semiconductor chip (3). The electrical circuit positions the chip (2) at a field coil (4) that is supplied with current for producing a reference magnetic field. The current in the field coil is adjusted using the measuring coil based on a magnetic flow density based measured value. The chip (3) is positioned at the field coil, and an electrical circuit detects and compares another value with a reference value range.