High accuracy absolute Magnetic Rotary Angle Sensor

High accuracy absolute Magnetic Rotary Angle Sensor



The AK7452 is a sensor that detects the direction of the magnetic field parallel to the IC surface. It is a 14-bit rotation angle sensor that follows high-speed rotation up to 25,000 rpm using our proprietary technology. With the simple configuration of the AK7452 and a small magnet, the rotation angle can be detected without contact. The power supply voltage is from 3.0V to 5.5V and a small package (TSSOP 16-pin) is used.

Key Features

  • Built-in angle error correction function
    The AK7452 has an angle error correction function, which can improve the accuracy by correcting the angle error caused by mounting errors. The correction is realized by writing the parameter for correcting the angle error to the AK7452 built-in EEPROM.
  • Various parameter setting by built-in EEPROM
    Built-in EEPROM allows zero point setting to set any angle position to 0 °, rotation direction, ABZ output resolution (any value from 1 to 4096), and programming of UVW poles (any value from 1 to 32) is.


  •                                 Compact absolute rotary encoder, Compact input device (mode selector, control volume) 
    Substitute for potentiometer, Rotary switch


Part Number AK7452
Description Digest High accuracy absolute Magnetic Rotary Angle Sensor
Power Supply Voltage (MIN.) [V] 3
Power Supply Voltage (TYP.) [V]
Power Supply Voltage (MAX.) [V] 5.5
Interface Serial, ABZ, UVW
Angle resolution [bit] 14
Angle Error Calibration Available *Shaft-End
Operating Temperature [℃] -40 to 125
Device Package TSSOP
Number of Pins 16

Product Information

Part Status MP
Pb Free Yes
Halogen Free Yes
Packaging TAPE
JEDEC Standard Packaging Compliant
Minimum Order Quantity [pcs.] 1000
Recommended Order Quantity 1 [pcs.] 12000
Recommended Order Quantity 2 [pcs.] 2000
Standard Packing Quantity [pcs.] 1000
Replacement P/N

Block Diagram

AK7452 Block Diagram

Magnet Selection Guideline for Shaft-End configuration

Application Note of Angle Sensors

Technical Resources

AKM provides the guideline for deciding on the optimalmagnet and layout for customers in need, "What kind of magnet should i choose for the magnetic angle sensor?"