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AK7454

MP

High accuracy angle sensor for Shaft-End and Off-Axis configuration

High accuracy angle sensor for Shaft-End and Off-Axis configuration

MP

Description

The AK7454 is a 14-bit rotation angle sensor that detects a magnetic field parallel to the IC surface and follows high-speed rotation up to 25,000 rpm using our proprietary technology. 
With the simple configuration of the AK7454 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 (QFN 24-pin) is used.

Key Features

  • Angle error correction function
    The AK7454 has an angle error correction function, which enables high-precision correction with at least 16 points of measurement data per round. By writing the angle error correction parameters to the AK7454's built-in EEPROM, highly accurate angle detection is realized.
  • Off-Axis placement support
    In addition to the shaft end (Shaft-End) arrangement, it corresponds to the Off-Axis arrangement where ICs are arranged next to the two-pole magnetized magnet, so that a through-axis motor system can be configured. As a result, the motor system can be made thinner and hollow.
  • Various parameter setting by built-in EEPROM
    It is possible to set the zero point that can set any angular position to 0 °, the rotation direction, the ABZ output resolution (any value from 1 to 4096ppr), and the number of UVW poles (any value from 1 to 32 pole pairs). The Z-phase output width and phase can be set freely, and the zero point of ABZ / UVW can be set independently, improving the convenience of motor control.

Applications

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

Specifications

Part Number
AK7454
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
MP
Pb Free
Yes
Halogen Free
Yes
MSL
MSL2
Packaging
TAPE
JEDEC Standard Packaging
Compliant
Minimum Order Quantity [pcs.]
1000
Replacement P/N

                                

Block Diagram

AK7454 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?"