AS5130ATST AMSCO [austriamicrosystems AG], AS5130ATST Datasheet - Page 35

• Manufacturer Part Number: AS5130ATST
• Description: 8 Bit Programmable Magnetic Rotary Encoder with Motion Detection & Multiturn
• Manufacturer: AMSCO [austriamicrosystems AG]

AS5130
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 31. Vertical Magnetic Field Distribution of a Cylindrical 6mmØ Diametric Magnetized Magnet at 1mm Gap
Figure 31
from the rotational axis.
Lateral Displacement of the Magnet
As shown in the magnet specifications (see Parameters for Magnet under
recommended horizontal position of the magnet axis with respect to the IC package center is within a circle of 0.25mm
radius. This includes the placement tolerance of the IC within the package.
Figure 32
and Y- axis of the graph indicate the lateral displacement of the magnet center with respect to the IC center. At X=Y=0,
the magnet is perfectly centered over the IC. The total displacement plotted on the graph is for ±1mm in both
directions. The Z-axis displays the worst case INL error over a full turn at each given X-and Y- displacement. The error
includes the quantization error of ±0.7º (refer to
centered magnet is between 1.0 – 1.5º (spec = 2º over full temperature range). Within a radius of 0.5mm, the accuracy
is better than 2.0º (spec = 3º over temperature).
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shows the same vertical field component as
shows a typical error curve at a medium vertical distance of the magnet around 1.2mm (AGC = 24). The X-
Bz [mT]
125
100
75
-100
X-displacement [mm]
50
-125
-25
25
-50
-75
0
4
3
2
2
BZ; 6mm magnet @ Z=1mm
1
N
0
Quantization Error on page
-1
Revision 1.00
-2
Figure
-3
-4
30, but in a 3-dimensional view over an area of +/-4mm
-3
S
-2
-1
Y-displacement [mm]
0
Electrical Characteristics on page
1
30). For example, the accuracy for a
center: +/- 0.5mm
area of X-Y-misalignment from
2
chip: 1mm radius
circle of Hall elements on
3
4
6), the
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