| 摘要 |
A Hall element ( 10 ) outputs a Hall voltage generated at a first terminal pair (A, C) or a second terminal pair (B, D) to first and second output terminals by switching the voltage in a first status and a second status. Based on the voltages of the first and the second output terminals and a reference voltage, first and second capacitors ( 41, 42 ) are charged. Then, the voltages of the first and the second capacitors ( 41, 42 ) are compared, and a detection signal is obtained. Thus, a magnetic sensor circuit ( 1 ) which reduces influence of an element offset voltage of the Hall element ( 10 ) and also reduces influence of an input offset voltage generated at an amplifier ( 30 ), and a portable terminal provided with such magnetic sensor circuit ( 1 ) are provided.
|
