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| 型号： | AS5215 DB |
| 厂商： | ams |
| 文件页数： | 12/27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
7.1.2
Magnet Thickness
Figure 6 shows the relationship of the peak amplitude in a rotating system (essentially the magnetic field strength of the Bz field component) in
relation to the thickness of the magnet. The X-axis shows the ratio of magnet thickness (or height) [h] to magnet diameter [d] and the Y-axis
shows the relative peak amplitude with reference to the recommended magnet (d=6mm, h=2.5mm). This results in an h/d ratio of 0.42.
Figure 6. Relationship of Peak Amplitude vs. Magnet Thickness
Bz amplitude vs. magnet thickness
of a cylindrical diametric magnet with 6mm diameter
160%
140%
120%
100%
80%
60%
d= 6mm x h= 2.5mm ref. magnet:
40%
20%
0%
h/d = 0.42
Rel. amplitude = 100%
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
thickness to diameter [h/d] ratio
As the graph in Figure 6 shows, the amplitude drops significantly at h/d ratios below this value and remains relatively flat at ratios above 1.3.
Therefore, the recommended thickness of 2.5mm (at 6mm diameter) should be considered as the low limit with regards to magnet thickness.
It is possible to get 40% or more signal amplitude by using thicker magnets. However, the gain in signal amplitude becomes less significant for h/
d ratios >~1.3. Therefore, the recommended magnet thickness for a 6mm diameter magnet is between 2.5 and ~8 mm.
www.austriamicrosystems.com/AS5215
Revision 1.11
11 - 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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