Motor device

Provided is a motor device that makes the influence of noise more equal between two signal processing circuits. A rotation angle sensor (60) has a bias magnet (61), a magnetic sensor unit (62), a first signal processing circuit (63a), and a second signal processing circuit (63b). The first signal processing circuit (63a) is placed symmetrically with the second signal processing circuit (63b) in alongitudinal direction of a substrate (21) with respect to the magnetic sensor unit (62) located on a line extended from a central axis of a rotary shaft (11). An inverter (40) is also placed symmetrically with an inverter (50) in the longitudinal direction of the substrate (21) with respect to the magnetic sensor unit (62). 本发明提供种使噪声在两个信号处理电路之间的影响更均衡的马达装置。旋转角传感器(60)具有：偏置磁铁(61)、磁传感器部(62)、第信号处理电路(63a)以及第二信号处理电路(63b)。在基板(21)的长边方向，第信号处理电路(63a)被配置为以处于旋转轴(11)的轴心的延长线上的磁传感器部(62)为基准与第二信号处理电路(63b)对称。另外，在基板(21)的长边方向，逆变器(40)也被配置为以磁传感器部(62)为基准与逆变器(50)对称。