AS5304 datasheet(16/31 Pages) AMSCO

Part #	AS5304

Description	Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection

PDF	31 Pages

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Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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Page 16

ams Datasheet

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[v2-00] 2017-May-03

AS5304/AS5306 − Detailed Description

Figure 15:

Hysteresis of the Incremental Output

Integral Non-Linearity (INL)

The INL (integral non-linearity) is the deviation between

indicated position and actual position. It is better than 1LSB for

both AS5304 and AS5306, assuming an ideal magnet. Pole

length variations and imperfections of the magnet material,

which lead to a non-sinusoidal magnetic field will attribute to

additional linearity errors.

Error Caused by Pole Length Variations

Figure 16 and Figure 17 show the error caused by a non-ideal

pole length of the multi-pole strip or ring. This is less of an issue

with strip magnets, as they can be manufactured exactly to

specification using the proper magnetization tooling.

Magnet position

Hysteresis:

1 LSB

X +2

Incremental

output

Movement direction: +X

Movement direction: - X

X +4

X +1

X +3

X+1

X+2

X+3

X+4

AS5304 Datasheet(PDF) 16 Page - ams AG