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发明授权
CN104062609B 检测电路、半导体集成电路装置、磁场旋转角检测装置和电子设备 有权 转让

检测电路、半导体集成电路装置、磁场旋转角检测装置和电子设备
摘要：
本发明提供检测电路、半导体集成电路装置和磁场旋转角检测装置。其课题为，使用以相互成预定的角度的方式而配置有两个传感器单元的磁传感器，并利用简单的电路结构，而以比45°更精细的精度来检测出磁场的旋转角。检测电路为与磁传感器连接的检测电路，在磁传感器中以相互成预定角度的方式而配置有，具有磁阻效应元件的桥式电路的第1传感器单元和第2传感器单元，所述检测电路包括：第1比较电路，其对第1或第2传感器单元的输出信号进行比较；第2比较电路，其对第1传感器单元的输出信号与第2传感器单元的输出信号进行比较；旋转角计算电路，其基于第1比较电路的比较结果和第2比较电路的比较结果，来计算出磁场的旋转角。
摘要（英）：

Detection of the rotation angle of a magnetic field using a magnetic sensor in which two sensor units are arranged at a predetermined angle with respect to each other is performed with a resolution of an angle smaller than 45° with a simple circuit configuration. A detection circuit is connectable to a magnetic sensor in which first and second sensor units are arranged at a predetermined angle with respect to each other, each sensor unit having a bridge circuit of magnetoresistance elements. The detection circuit includes a first comparison circuit that compares output signals of the first or second sensor unit, a second comparison circuit that compares an output signal of the first sensor unit with an output signal of second sensor unit, and a rotation angle calculation circuit that calculates a rotation angle of a magnetic field based on the comparison results of the first and second comparison circuits.

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