AS5040
Data Sheet
Figure 20: Typical Magnet and Magnetic Field Distribution
typ. 6mm diameter
N
S
Magnet axis
Vertical field
component
R1
Magnet axis
Bv
(45 …75mT)
Vertical field
component
0
360
N
S
R1 concentric circle;
radius 1.1mm
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 21:
Figure 21: 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
Magnet Placement
The magnet’s center axis should be aligned within a displacement radius R d of 0.25mm from the defined center of the
IC with reference to the edge of pin #1 (see Figure 21). This radius includes the placement tolerance of the chip within
the SSOP-16 package (+/- 0.235mm). The displacement radius R d is 0.485mm with reference to the center of the chip
(see section 13: Alignment Mode)
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