Rotation detection device and cable with sensor

A cable with sensor that is used for a rotation detection device comprising a detected member that is mounted to a rotating member and has a plurality of magnetic poles arranged in a circumferential direction about a rotational axis of the rotating member, and a sensor section that is mounted to a stationary member not rotating with rotation of the rotating member and is arranged to face the detected member, wherein the cable with sensor comprises:

• a cable;
• and
• the sensor section provided at an end of the cable,
• wherein the sensor section comprises a plurality of magnetic sensors each comprising a plate-shaped detection section that comprises a magnetism detection element for detecting a magnetic field from the detected member, a signal processing circuit for processing a signal output from the magnetism detection element, and a cover collectively covering the magnetism detection element and the signal processing circuit, and
• wherein the detection sections are stacked in a direction along which the sensor section and the detected member face each other.