AS5040 Rotary Sensor
10-bit rotary position sensor with digital angle (interface), ABI, UVW and PWM output
Features
- Contactless absolute angle position measurement and motion sensing
- User programmable resolution, pole pairs and zero position
- Multiple interfaces (SSI, ABI, UVW, PWM)
- Immune to external magnetic stray fields
Benefits
- Highest reliability and durability in harsh environments
- Great flexibility during assembly
- One device for different applications
- Lower material cost (no magnetic shielding needed)
Product parameters
Resolution [bit] | 10 |
---|---|
Interface | SSI |
Output | Digital angle (interface) / ABI / UVW / PWM |
Max. Speed [rpm] | 30000 |
Overvoltage Protection | |
Redundant | |
Supply Voltage [V] | 3.3 or 5.0 |
Temperature Range [°C] | -40 to +125 |
Package | SSOP-16 |
Automotive Qualified | |
Longevity Program |
General description
The AS5040 is a 10-bit rotary position sensor (previously known as encoder) for absolute angular measurement and with an incremental output over a full turn of 360° based on contactless magnetic sensor technology. This device fits perfectly for on-axis applications where a simple 2-pole magnet rotates above or below the sensor IC and the zero position can be programmed into the device. The absolute magnet angular position is measured with a resolution of 10 bit = 1024 positions per revolution and it is provided as a digital value on the serial interface (SSI) and on the PWM output signal.
With two decades of magnetic sensor system know-how, we have broad experience in selecting the most suitable magnets. ams experts recommend the following magnet suppliers.

This product suits for the following applications:
- Motor speed and motion sensor
- Replacement of optical magnetic position sensors
- Commutation of brushless motors
- Robotics

Tools
Title | Category | Headline | Buy |
---|---|---|---|
AS5040AdapterBoard | Application Board | Adapter Board for AS5040 | |
RMH05-DK-XX | Accessories | Rotary Magnetic Holder | |
AS5040-PB | Application Board | Programming Board for AS5040 | |
SD4Y-PP | Accessories | Production Programmer SD4Y |
Technical documents
Type | Description | Language | ||
---|---|---|---|---|
Datasheet | AS5040 Datasheet version 3-00 | English | ||
Application Note | AN5000 Magnet Selection Guide v1-04 | English | ||
Application Note | Tape & Reel Packing Information | English | ||
User Guide | Adapter PCB | English | ||
User Guide | Programming tool | English |
Environmental documents
Type | Description | Language | ||
---|---|---|---|---|
Material Declaration Form | MDF_172860002_AS5040-ASSM | English | ||
Material Declaration Form | MDF_172860002_AS5040 | English | ||
RoHS Certificate | RoHS Certificate AS5040 | English |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
EoL Notification | AS50xx_AS53xx_tubes (issued 2017-Jun) | English | ||
EoL Notification | AS5xxx, AS6204, AS8223 EoL Notification (issued August-10-2021) | English | ||
Product Change Notification | CN24-2018 (AS252x, AS504x, SL900A) | English | ||
Product Change Notification | Test System Transfer from Synchromaster to LTX EX/MX Platform | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS5040 Block Diagram | English | ||
Factsheet | All-Rounder | English | ||
Image | AS5000 Programmer Image | English | ||
Image | ASXXXX On-Axis SSOP16 Magnetic Field Lines |