| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetic sensor that can suppress fluctuation of an operating point and variations in resistance value ratios and in which temperature characteristics are improved. <P>SOLUTION: A magnetic sensor 1 comprises a sensor circuit unit 2. The sensor circuit unit 2 includes a first series circuit 6 where first and third magnetic resistance elements R1, R3 are connected in series and a second series circuit 7 where second and fourth magnetic resistance elements R2, R4 are connected in series, and is constituted by a bridge circuit 5 where the first series circuit 6 and the second series circuit 7 are connected in parallel. Surfaces of the first through fourth magnetic resistance elements R1-R4 are covered with an insulator film 12. Further, the surfaces of the third magnetic resistance element R3 and the fourth magnetic resistance element R4 are formed with a magnetic flux magnetism collecting film 13 made of a magnetic material, with the insulator film 12 sandwiched therebetween. <P>COPYRIGHT: (C)2013,JPO&INPIT |
