| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic sensor that amplifies a magnetic detection signal containing a DC component.SOLUTION: A comparator 6 compares an output voltage of an amplifier circuit 2, in a state where magnetism is not detected, with a reference voltage. Based on an output of the comparator 6, a successive comparison type analog/digital converter 7 generates a signal Vdao for correcting an output offset voltage generated in the amplifier circuit 2. By input of the generated signal Vdao into a reference voltage input terminal 2b of an amplifier circuit 2, a magnetic detection signal containing a DC component from a magnetic detection circuit 1 is transmitted to the amplifier circuit 2 directly. |
