AS5040-ASST View Datasheet(PDF) - austriamicrosystems AG
Part Name
Description
MFG CO.
'AS5040-ASST' PDF : 61 Pages View PDF
AS5040 − Choosing the Proper Magnet
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 Bv
at a given distance, along a concentric circle with a radius of
1.1mm (R1), should be in the range of ±45mT to ±75mT. (see
Figure 40).
Figure 40:
Typical Magnet and Magnetic Field Distribution
typ. 6mm diameter
N
S
Magnet axis
R1
Magnet axis
Vertical field
component
Bv
(45…75mT)
Vertical field
component
0
360
NS
R1 concentric circle;
radius 1.1mm
ams Datasheet
[v2-12] 2017-Jun-20
Page 39
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