Patent ID: 8587297

Claim:
An integrated circuit comprising: a magnetic field sensor comprising a die including a magnetic field sensitive element; a bond wire electrically coupled to the die; and an injection molded magnetic material directly contacting the bond wire, enclosing at least a portion of the magnetic field sensor and directly contacting at least a portion of the die, wherein the injection molded magnetic material comprises: first injection molded magnetic material having a first thickness on a first side of the magnetic field sensor; and second injection molded magnetic material having a second thickness greater than the first thickness, the second injection molded magnetic material on a second side of the magnetic field sensor opposite the first side, wherein the first injection molded magnetic material is opposite the second injection molded magnetic material, wherein the first injection molded magnetic material has a first remanence, wherein the second injection molded magnetic material has a second remanence less than the first remanence, and wherein the thickness of the first injection molded magnetic material times the first remanence equals the thickness of the second injection molded magnetic material times the second remanence.