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AS5263
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
An equal output of all read out data is sufficient to verify the OTP programming. If the data output is a mismatch, then the programming of the
OTP was not successful and can cause a change of the OTP register content during operation over temperature and life time.
8.2.3
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 chip as shown in Figure 26 .
Figure 26. Defined Chip Center and Magnet Displacement Radius
Defined
center
R d
Area of recommended maximum
magnet misalignment
8.2.4
Magnet Placement
The magnet’s center axis should be aligned within a displacement radius R d of 0.25mm (larger magnets allow more displacement) from the
defined center of the IC.
The magnet may be placed below or above the device. The distance should be chosen such that the magnetic field on the die surface is within
the specified limits (see Figure 26) . The typical distance “z” between the magnet and the package surface is 0.5mm to 1.5mm, provided the
recommended magnet material and dimensions (6mm x 3mm) are used. Larger distances are possible, as long as, the required magnetic field
strength stays within the defined limits.
However, a magnetic field outside the specified range may still produce usable results, but the out-of-range condition will be indicated by an
alarm forcing the output into the failure band.
Figure 27. Vertical Placement of the Magnet
N
S
z
0.561mm
±0.075mm
www.austriamicrosystems.com/AS5263
Die surface
Die 1
Die 2
Revision 1.4
Package surface
0.850mm
nom.
33 - 37
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