sales@aoelectronics.com
+86 755 2821 9272
Manufacturers
- Abracon
- Adam Tech
- Aerospace, Defense & Marine
- Agastat
- AIC
- AKM Semiconductor
- Alcoswitch
- Allegro
- Alps Electric
- Altera
- AMI Semiconductor
- AMP
- ams
- Analog Devices (ADI)
- Aptina Imaging
- Atmel
- Avago / Broadcom
- AVX
- Axicom
- Bccomponents
- Beyschlag
- BI Technologies
- Bourns Inc.
- Bowei Integrated Circuits
- Bridgelux
- Buchanan
- California Micro Devices
- Catalyst Semiconductor
- CGS
- Cirrus Logic
- Citizen Electronics
- CML Microcircuits
- Coiltronics
- Cooper Bussmann
- Corcom
- Core Logic
- Cree
- CSR PLC
- CTS
- Cypress Semiconductor
- Dale
- Data Image
- Deutsch
- Diodes Incorporated
- DOMINANT Opto Technologies
- E-T-A
- Eaton
- ECS
- Edison Opto
- Elcon
- EPCOS
- Epistar
- Epson
- Everlight Electronics
- Exar
- Fairchild Semiconductor
- FCI
- Freescale Semiconductor
- Fremont Micro Devices (FMD)
- Fujitsu Semiconductor
- Fulltech Electric
- General Semiconductor
- Harvatek
- Holsworthy
- Hsuan Mao Technology
- IDT
- Infineon Technologies
- Innolux
- International Rectifier (IR)
- Intersil
- IRC
- ISSI
- IXYS-IC
- Jing Cheng Electronical
- JL World
- Johanson Dielectrics
- Johanson Technology
- JRC / NJR
- JST
- KEC
- Kilovac
- Kingbright
- Kyocera Industrial Ceramics
- LEDiL
- Linear Technology / ADI
- Lite-On Technology
- Littelfuse
- Lumex
- Lumileds
- Luminary Micro
- Luminus Devices
- Macronix
- Maojwei / ZJPT
- Maxim Integrated
- MCC
- Mean Well Enterprises
- Microchip Technology
- Micron
- Microsemi
- Mini-Circuits
- Molex
- Murata Manufacturing
- Murata Power Solutions
- MWT
- National Semiconductor
- Nichicon
- Nippon Chemi-Con
- NJR / JRC
- NVE
- NXP Semiconductors
- OEG
- Omnivision
- ON Semiconductor
- Optek Technology
- Optrex
- OSRAM Opto Semiconductors
- OTAX
- Panasonic
- Peregrine（pSemi）
- Potter & Brumfield
- Power Integrations
- PowerStor
- Preci-Dip
- Prewell
- Products Unlimited
- Pulse Electronics
- PulseCore Semiconductor
- Qorvo
- Raychem
- Renesas Electronics
- RFMD
- Richtek Technology
- ROHM Semiconductor
- Rubycon
- Samsung Electro-Mechanics
- Samsung Semiconductor
- Schaffner
- Schrack
- Seiko Instruments, Inc. (SII)
- Semtech
- Sensata
- Seoul Semiconductor
- Sfernice
- Sharp Display
- Sharp Microelectronics
- Silicon Labs
- Siliconix
- Skyworks Solutions
- SoniCrest / JL World
- Spansion
- Sprague
- Stanley Electric
- STMicroelectronics
- Sunny Electronics
- Susumu (SSM)
- Taimag
- Taiyo Yuden
- TDK
- TDK-Lambda
- TE Connectivity
- Teccor
- Texas Instruments (TI)
- Thin Film
- Tianma Micro-electronics
- TOCOS
- TOKO
- Toshiba Electronic Components
- TT Electronics
- Tusonix
- TXC
- Tyntek
- Vishay
- Vishay Precision Group
- Vitramon
- Walsin Technology
- Weidmuller
- Welwyn
- Wickmann
- Winbond
- Xilinx
- Yageo
- Zetex Semiconductors
- ZJPT / Maojwei
News
Introduction of a New Option for Compact, High-Precision Encoders: Rotary Angle Sensor IC with Strong Dust and Oil Resistance
2025-07-01 | Return
DescriptionAsahi Kasei Microdevices Corporation (AKM) has developed a rotary angle sensor IC, AK7440, as a new option for compact and high-precision encoders.
In recent years, there has been increasing demand for smaller and more precise encoders. While optical encoder modules offer high precision, their complexity in manufacturing and high cost often present challenges for in-house implementation and integration.
The AK7440 incorporates AKM’s proprietary compound semiconductor technology and enables encoders to achieve optical-class precision in a compact form factor suitable for small motors by combining with a magnetic slit.
Features
Achieves angle precision ±20* arcseconds in electromagnetic system
By combining electromagnetic converted signals from AKM’s proprietary compound semiconductor magneto-resistive elements with a dedicated angle calculation algorithm, the AK7440 achieves an angle accuracy of ±20 arcseconds.
It achieves a level of precision that was previously difficult with conventional magnetic sensors. It maintains stable operation even in environments with dust, oil, and other contaminants.
*Based on actual measurements under AKM’s internal evaluation conditions.
Expertise Optimized for 40 mm Flange Motors
The trade-off between slit miniaturization and angle precision is resolved through the total solution that integrates the magnetic sensing technology, signal processing, and angle calculation algorithms.
This makes it compatible with 40 mm flange motors, expanding the use across a wide range of industrial applications.
Built-in Algorithm for Correcting Mounting-Induced Angle Errors
Our proprietary angle calculation algorithm also includes an angle correction function.
This function corrects angle errors caused by slit disk eccentricity, tilt, or misalignment of the IC during assembly. This expands the allowable tolerances in the assembly process and reduces the burden during assembly.
Application
・Absolute encoders
・AC servo motors
・Actuators used in robots
・Actuators in industrial transport equipment
Source：https://www.akm.com/