AS5600-ASOM datasheet(34/44 Pages) OSRAM

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ams Datasheet

Page 33

[v1-06] 2018-Jun-20

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AS5600 − Application Information

Figure 39:

Recommended External Components

Note(s):

1. Given parameter characteristics have to be fulfilled over operation temperature and product lifetime

Magnetic Requirements

The AS5600 requires the magnetic field component Bz

perpendicular to the sensitive area on the chip.

Along the circumference of the Hall element circle the magnetic

field Bz should be sine-shaped. The magnetic field gradient of

Bz along the radius of the circle should be in the linear range

of the magnet to eliminate displacement error by the

differential measurement principle.

Figure 40:

Magnetic Field Bz and Typical Airgap

The typical airgap is between 0.5 mm and 3 mm, and it depends

on the selected magnet. A larger and stronger magnet allows a

larger airgap. Using the AGC value as a guide, the optimal airgap

can be found by adjusting the distance between the magnet

and the AS5600 so that the AGC value is in the center of its

range. The maximum allowed displacement of the rotational

axis of the reference magnet from the center of the package is

0.25 mm when using a magnet with a diameter of 6mm.

Component

Symbol

Value

Units

Notes

VDD5V buffer capacitor

100

20%

LDO regulator capacitor

μF

20%; < 100 mΩ; Low ESR ceramic capacitor

Optional pull-up for I²C bus

RPU

4.7

KΩ

Refer to UM10204 for RPU sizing

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