AS5011 Просмотр технического описания (PDF) - austriamicrosystems AG

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AS5011

Low Power Integrated Hall IC for Human Interface Applications

austriamicrosystems AG 

AS5011

Data Sheet

6.3 Magnet-chip surface airgap range

The relation between the magnet physical position and the resulting XY registers depends on the magnet

type/size/shape, and the airgap between the magnet and the top (or bottom) surface of the AS5011.

The measurements on Figure 6, Figure 6 Figure 8 have been processed with the AS5000-MA2H-1 d2x0.8mm

cylinder magnet, available on austriamicrosystems website. For those magnets, used in EasyPoint modules EP40

and EP50, the airgap range is typically 0~3mm.

The following diagrams show the relation between the X register value and the physical X coordinate (±2mm

horizontal displacement, 0mm is the center of the chip package) of the magnet at different airgaps. The resulting X

value range decreases when the airgap increases

The Y axis measurements are the same as the X axis ones.

80

Airgap 500um

60

40

20

-2500 -2000 -1500 -1000

0

-500 0

-20

-40

40

Airgap 1500um

30

20

10

500 1000 1500 2000 2500

-2.500 -2.000 -1.500 -1.000

0

-500

0

-10

-20

-30

500 1.000 1.500 2.000 2.500

-60

-40

-80

Magnet position (um)

-50

Magnet position (um)

Figure 6: X register / X displacement (500um airgap)

Figure 7: X register / X displacement (1500um airgap)

30

Airgap 2500um

20

10

0

-2.500 -2.000 -1.500 -1.000 -500

0

-10

500 1.000 1.500 2.000 2.500

-20

-30

Magnet position (um)

Figure 8: X register / X displacement (2500um airgap)

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