AS5247U - High Resolution Rotary Position Sensor
14-bit on-axis magnetic rotary position sensor with up to 14-bit binary incremental pulse count
特点
- DAEC ™ Dynamic angle error compensation DFS ™ Dynamic filter system
- Magnetic stray field immunity
- Developed according ISO26262, diagnostics, dual redundant chip version ASIL-D capable, Safety Element out of Context (SEooC)
- AEC-Q100 Grade 0 qualified
- Independent output interfaces: SPI, ABI, UVW, PWM
优势
- Easy to use – saving costs on DSP
- Higher durability and lower system costs (no shield needed)
- Enabler for safety critical applications
- Suitable for automotive applications
- Versatile choice of the interface
产品参数
Resolution [bit] | 14 |
---|---|
Interface | SPI |
Output | ABI, UVW, PWM |
Max. Speed [rpm] | 28.000 |
Overvoltage Protection | |
Redundant | Yes |
Supply Voltage [V] | 3.3 - 5 |
Temperature Range [°C] | -40 to 150 |
Package | TQFP-32 |
Automotive Qualified | Yes |
Longevity Program | January 2031 |
综述
The AS5247U is a high-resolution redundant rotary position sensor for fast absolute angle measurement over a full 360-degree range. This position sensor is equipped with a revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency at higher rotational speed. For increased signal quality at lower rotational speed, the dynamic filter system (DFS™) reduces transition noise.
The robust design of the device suppresses the influence of any homogenous external stray magnetic field. A standard 4-wire SPI serial interface with a CRC protection allows a host microcontroller to read 14-bit absolute angle position data from the AS5247U 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 16989 steps / 4096 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 AS5247U supports embedded self-diagnostics for fulfilling up to ASIL D in safety relevant applications. The device is using the ams stacked die technology in a TQFP-32 (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.

本产品适用于以下应用:
- BLDC motor communication
- Electric power steering (EPS)
- Transmission (gearbox, actuator)
- Brake (actuator)
- Starter/alternator

技术文档
类别 | 描述 | 语言 | ||
---|---|---|---|---|
Datasheet | AS5147U_AS5247U Datasheet v1-07 | English | ||
Application Note | Description of adaptive filter | English | ||
Application Note | Dynamic Angle Error Compensation Description | English | ||
Application Note | Zero Position Programming in Motor Control Application | English | ||
Application Note | AN5000 Magnet Selection Guide v1-04 | English | ||
Application Note | USB Interface & Programming Box | English | ||
User Guide | User Guide Adapter Board AS5247U | English | ||
User Guide | User Guide Socket Board AS5247U | English |
环境文档
类别 | 描述 | 语言 | ||
---|---|---|---|---|
Material Declaration Form | MDF_507940006_AS5247U-HTQT | English | ||
Material Declaration Form | MDF_507940006_AS5247U-HTQT | English | ||
RoHS Certificate | RoHS Certificate_AS5147U/AS5247U | English |
通知
类别 | 描述 | 语言 | ||
---|---|---|---|---|
EoL Notification | AS5xxx, AS6204, AS8223 EoL Notification (issued August-10-2021) | English |
其他信息
类别 | 描述 | 语言 | ||
---|---|---|---|---|
Block Diagram | Block Diagram AS5247U | English | ||
Factsheet | Position Sensor ICs boost BLDC motor efficiency | English | ||
Factsheet | Position Sensors Family Overview | English | ||
Image | AS5247USocketBoard Image | English | ||
Image | AS5247UAdapterBoard Image | English |