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AK7451 Magnetic Angle Sensor

AKM Semiconductor features their AK7451 zero latency magnetic rotary angle sensor for motor-driven applications

The AK7455 is a 14-bit angular rotation sensor that detects magnetic fields parallel or perpendicular to the surface of the IC and tracks high speeds up to 25,000 rpm using proprietary technology.
A simple configuration of the AK7455 and a small magnet is used to sense the angle of rotation in a non-contact manner. The AK7455 is available in a power supply voltage range of 3.0V to 5.5V and a small package (QFN 24-pin).
https://www.akm.com/eu/en/products/rotation-angle-sensor/
Key Features
  • Anomaly magnetic field detection
A function to detect magnetic fields other than the sensor magnet as an anomaly magnetic field has been added, contributing to the detection of system anomalies and malfunctions.
  • Increased placement flexibility in Off-Axis configurations
In addition to the conventional magnetic field detection in the X-Y plane, the magnetic field detection in the X-Z and Y-Z planes is now possible in the Off-Axis configuration, increasing the flexibility of sensor placement in motor systems.
  • Improved response to acceleration and deceleration
The bandwidth setting of the angle calculation circuit has been extended compared to that of the conventional product to improve the response of the motor acceleration and deceleration.

Angular error calibration function
The AK7455 provides highly accurate angle detection by writing calibration parameters obtained from a minimum of 16 measurement points per revolution to the AK7455's built-in EEPROM.
Applications
  • Various motor controls, machine tools, electric actuators, industrial sewing machines
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