AK7455

NEW

High accuracy rotation angle sensor that supports Shaft-End and Off-Axis configuration

High accuracy rotation angle sensor that supports Shaft-End and Off-Axis configuration

NEW

Description

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).

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
                                

Specifications

Part Number
AK7455
Description Digest
High accuracy angle sensor for Shaft-End and Off-Axis configuration
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 *Off-Axis, Shaft-End
Other

                                
Operating Temperature [℃]
-40 to 125
Device Package
HVQFN
Number of Pins
24

Product Information

Part Status
NEW
Pb Free
Yes
Halogen Free
Yes
MSL
MSL2
Packaging
TAPE
JEDEC Standard Packaging
Compliant
Minimum Order Quantity [pcs.]
1000
Replacement P/N

                                

Block Diagram

Block Diagram

Application Note for Off-Axis configuration

Application Note of Angle Sensors

Technical Resources

We have prepared a new technical document of the angle sensor that supports "Off-Axis configuration", which is ideal for double axis motors and hollow shaft motors.

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?"