Patent ID: 8686722

Claim:
A semiconductor magnetometer comprising: a semiconductor structure having a bottom surface, a top surface, and a cavity that extends from the top surface down into the semiconductor structure, the cavity having a side wall surface and a bottom surface, the bottom surface of the cavity lying above and being vertically spaced apart from the bottom surface of the semiconductor structure; a die adhesively attached to the bottom surface of the cavity, the die having a plurality of external electrical connection points; a non-conductive structure that touches the die and the top surface of the semiconductor structure; a magnetic core structure that touches the non-conductive structure; a first conductor that touches the non-conductive structure, the first conductor being electrically connected to the die, and wound around the magnetic core structure in a spiral to form a first coil; and a second conductor that touches the non-conductive structure, the second conductor being electrically isolated from the first conductor, and wound around the magnetic core structure in a spiral to form a second coil.