General Description
The AK7451 is a magnetic rotational angle sensor IC of Si monolithic with a built-in Hall element, and easily achieve a non-contact rotation angle sensor in combination with diametrically magnetized two pole magnet.
By detecting the magnetic field parallel vector to the IC package surface, the AK7451 outputs the absolute angular position of the magnet, and the relative angular position.
By transverse magnetic field detection method using a magnetic flux concentrator, the AK7451 has excellent axial misalignment immunity.
AK7451 is the Zero Latency rotation angle sensor to follow up to 20,000rpm with the architecture of the tracking servo system, it is suitable to various motor drive applications and an encoder applications.

FEATUREs
□ Monolithic integrated 360 degrees angle sensor IC containing Hall element.
□ Easy to make a contactless rotation sensor with diametrically magnetized two pole magnet.
□ Interfaces : SPI(absolute angle), ABZ phase output (incremental Interface), UVW phase output
□ 12bit angle resolution
□ Less than ±0.6 deg. angle accuracy at 25 ºC
□ Maximum tracking speed : 333 rps (20,000 rpm)
□ Angle output delay time: 1.8µs
□ Operating ambient temperature: -40 to 125ºC
□ Various abnormal detection; abnormal magnetic flux density range etc.
□ Various setting functions; angle zero point, rotation direction, ABZ resolution/hysteresis etc.