AS5247 Position Sensor Dual-Die
Redundant 14-bit on-axis magnetic rotary position sensor with 11-bit binary incremental pulse count
Features
- DAEC™ dynamic angle error compensation
- 14-bit core resolution
- Independent output interfaces: SPI, ABI, UVW, PWM
- Zero position, configuration programmable
- Self-diagnostics and redundancy
- Immune to external stray fields
Benefits
- Easy to use – saving costs on DSP
- Good resolution for motor and position control
- Versatile choice of the interface
- No programmer needed (via SPI command)
- Supports safety challenging applications
- Lower system costs (no shielding needed)
Product parameters
Resolution [bit] | 14 or 11 |
---|---|
Interface | SPI |
Output | ABI, UVW, PWM |
Max. Speed [rpm] | 14500 |
Overvoltage Protection | |
Redundant | Yes |
Supply Voltage [V] | 3.3 or 5.0 |
Temperature Range [°C] | -40 to +150 |
Package | MLF-40 7x7 |
Automotive Qualified | Yes |
Longevity Program | January 2031 |

General description
The AS5247 is a high-resolution redundant rotary position sensor for fast absolute angle measurement over a full 360-degree range. This new position sensor is equipped with a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency. The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller to read 14-bit absolute angle position data from the AS5247 and to program non-volatile settings without a dedicated programmer. Incremental movements are indicated on a set of ABI signals with a maximum resolution of 2048 steps / 512 pulses per revolution. The resolution of the ABI signal is programmable to 1024 steps / 256 pulses per revolution. Brushless DC (BLDC) motors are controlled through a standard UVW commutation interface with a programmable number of pole pairs from 1 to 7. The absolute angle position is also provided as PWM-encoded output signal. The AS5247 supports embedded self-diagnostics including magnetic field strength too high, magnetic field strength too low or lost magnet, and other related diagnostic features. The AS5247 is available as a dual die in a compact MLF-40 7x7 package.
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:
- Electric power steering (EPS)
- Transmission (gearbox, actuator)
- Brake (actuator)
- Starter and alternator

Tools
Title | Category | Headline | Buy |
---|---|---|---|
RMH05-DK-XX | Accessories | Rotary Magnetic Holder | |
USBI&PBox | Accessories | USB I&P Box for I2C/SPI | |
AS5247AdapterBoard | Application Board | Adapter Board for AS5247 | |
AS5247SocketBoard | Application Board | Socket Board for AS5247 |
Technical documents
Type | Description | Language | ||
---|---|---|---|---|
Datasheet | Document version 1-10 | English | ||
Application Note | Dynamic Angle Error Compensation Description | English | ||
Application Note | Zero Position Programming in Motor Control Application | English | ||
Application Note | Redundancy Bit | English | ||
Application Note | Communication Interfaces | English | ||
Application Note | AN5000 Magnet Selection Guide v1-04 | English | ||
Application Note | Tape & Reel Packing Information | English | ||
Application Note | USB Interface & Programming Box | English |
Environmental documents
Type | Description | Language | ||
---|---|---|---|---|
Material Declaration Form | MDF_193570025_AS5247-HMFM | English | ||
Material Declaration Form | MDF_193570025_AS5247-HMFT | English | ||
RoHS Certificate | RoHS Certificate_AS5247 | English |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
Product Change Notification | PCN38-2018 (AS50xx, AS51xx, AS52xx, AS54xx, AS8xxx) | English |
Other information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS5247 Block Diagram | English | ||
Factsheet | Contactless Magnetic Position Sensing for Motor Control | English | ||
Factsheet | Position Sensors Family Overview | English |