as5145h austriamicrosystems, as5145h Datasheet - Page 25

• Manufacturer Part Number: as5145h
• Description: 12-bit Programmable Magnetic Rotary Encoder
• Manufacturer: austriamicrosystems

AS5145
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Figure 18. Typical Magnet (6x3mm) and Magnetic Field Distribution
9.4.1 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 chip as shown in the drawing below:
Figure 19. Defined Chip Center and Magnet Displacement Radius
www.austriamicrosystems.com/AS5145
Vertical field
component
Vertical field
component
1
Bv
3.9mm
Area of recommended maximum mag-
0
360
N
(45…75mT)
net misalignment
Revision 1.11
R1
R
d
typ. 6mm diameter
R1 concentric circle;
radius 1.1mm
S
Defined
center
Magnet axis
Magnet axis
3.9mm
360
25 - 36