参数资料
型号: AS5043 DB V2
厂商: ams
文件页数: 21/37页
文件大小: 0K
描述: BOARD DEMO AS5043
标准包装: 1
传感器类型: 磁性,旋转位置
传感范围: 360°
接口: USB
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: AS5043
AS5043
Data Sheet – Choosing the Proper Magnet
15 Choosing the Proper Magnet
Typically the magnet should be 6mm in diameter and ≥ 2.5mm in height. Magnetic materials such as rare earth AlNiCo,
SmCo5 or NdFeB are recommended.
The magnet’s field strength perpendicular to the die surface should be verified using a gauss-meter. The magnetic field
B v at a given distance, along a concentric circle with a radius of 1.1mm (R1), should be in the range of ±45mT…±75mT.
(see Figure 18).
Figure 18: Typical Magnet and Magnetic Field Distribution
typ. 6mm diameter
N
S
Vertical field
Magnet axis
component
Vertical field
component
R1
Magnet axis
Bv
0
(45…75mT)
360
360
N
S
R1 concentric circle;
radius 1.1mm
15.1 Physical Placement of the Magnet
The best linearity can be achieved by placing the center of the magnet exactly over the defined center of the IC package
as shown in Figure 19.
Figure 19: Defined IC Center and Magnet Displacement Radius
3.9 mm
3.9 mm
1
2.433 mm
Defined
center
R d
2.433 mm
Area of recommended maximum
magnet misalignment
www.austriamicrosystems.com
Revision 1.80
20 – 36
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