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参数资料
| 型号： | AS5215 DB |
| 厂商： | ams |
| 文件页数： | 13/27页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO AS5215 |
| 标准包装： | 1 |
| 传感器类型： | 磁性，旋转位置 |
| 传感范围： | 360° |
| 接口： | USB |
| 灵敏度： | -161dB |
| 电源电压： | 5V USB 或 9V |
| 嵌入式： | 是，MCU，8 位 |
| 已供物品： | 板，线缆 |
| 已用 IC / 零件： | AS5215 |
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AS5215
Datasheet - D e t a i l e d D e s c r i p t i o n
7.1.3
Axial Distance (Airgap)
Figure 7. Sinusoidal Magnetic Field Generated by the Rotating Magnet
B
vertical
field
0
360o
The recommended magnetic field, measured at the chip surface on a radius equal to the Hall sensor array radius (typ 1mm) should be within a
certain range. This range lies between 45 and 75mT or between 20 and 80mT, depending on the encoder product.
Linear position sensors are more sensitive as they use weaker magnets. The allowed magnetic range lies typically between 5 and 60mT.
7.1.4
Angle Error vs. Radial and Axial Misalignment
The angle error is the deviation of the actual angle vs. the angle measured by the encoder. There are several factors in the chip itself that
contribute to this error, mainly offset and gain matching of the amplifiers in the analog signal path. On the other hand, there is the nonlinearity of
the signals coming from the Hall sensors, caused by misalignment of the magnet and imperfections in the magnetic material.
Ideally, the Hall sensor signals should be sinusoidal, with equal peak amplitude of each signal. This can be maintained, as long as all Hall
elements are within the linear range of the magnetic field Bz (see Figure 5) .
7.1.5
Mounting the Magnet
Generally, for on-axis rotation angle measurement, the magnet must be mounted centered over the IC package. However, the material of the
shaft into which the magnet is mounted, is also of big importance.
Magnetic materials in the vicinity of the magnet will distort or weaken the magnetic field being picked up by the Hall elements and cause
additional errors in the angular output of the sensor.
Figure 8. Magnetic Field Lines in Air
Figure 8 shows the ideal case with the magnet in air. No magnetic materials are anywhere nearby.
www.austriamicrosystems.com/AS5215
Revision 1.11
12 - 26
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS5215-HQFT | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Programmable 360o Magnetic Angle Encoder with Buffered SINE & COSINE Output Signals |
| AS5215-HQFT-OM | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Programmable 360o Magnetic Angle Encoder with Buffered SINE & COSINE Output Signals |
| AS5215OM | 制造商:ams 功能描述:IC ENCODER PROG 32QFN 制造商:ams 功能描述:T&R / QFN 32 |
| AS5215OM-500 | 制造商:ams 功能描述:IC ENCODER ROTARY 32-QFN |
| AS5215OM-HMFM | 功能描述:IC ENCODER ROTARY 32-QFN 制造商:ams 系列:汽车级，AEC-Q100 零件状态:有效 编码器类型:磁性 输出类型:电压 每转脉冲数:- 电压 - 电源:4.5 V ~ 5.5 V 致动器类型:外磁铁，不含 棘爪:无 内置开关:无 安装类型:表面贴装 朝向:- 端子类型:SMD（SMT）接片 旋转寿命（最少次数）:- 标准包装:1 |
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