AS5040 View Datasheet(PDF) - austriamicrosystems AG
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AS5040 Datasheet PDF : 61 Pages
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AS5040 − Choosing the Proper Magnet
Figure 42:
Vertical Placement of the Magnet
Magnet Placement
The magnet’s center axis should be aligned within a
displacement radius Rd of 0.25mm from the defined center of
the IC with reference to the edge of pin #1 (see Figure 41). This
radius includes the placement tolerance of the chip within the
SSOP-16 package (± 0.235mm). The displacement radius Rd is
0.485mm with reference to the center of the chip (see
Alignment Mode)
The vertical distance should be chosen such that the magnetic
field on the die surface is within the specified limits (see
Figure 40). The typical distance “z” between the magnet and
the package surface is 0.5mm to 1.8mm with the recommended
magnet (6mm x 2.5mm). Larger gaps are possible, as long as
the required magnetic field strength stays within the defined
limits.
A magnetic field outside the specified range may still produce
usable results, but the out-of-range condition will be indicated
by MagINCn (pin 1) and MagDECn (pin 2), see Figure 22.
N
S
Die surface
Package surface
z
0.576mm ± 0.1mm
1.282mm ± 0.15mm
ams Datasheet
[v2-12] 2017-Jun-20
Page 41
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