Data Sheet

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Copyright LZE GmbH 2021
Measurement Modes
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6.4
Linear Position or Off-Axis Angle Sensor
(Gradient Field Values, Magnet On-Top)
With this setting a linear position measurement or an off-axis angle measurement is feasible. The
gradient mode makes the angle value independent from homogeneous external fields. A linearization
table can be used for both applications to allow for a linear output curve (see chapter 7.8).
6.4.1 Application Example
Magnet configuration examples in zero position for gradient operation mode
6.4.2 Settings
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Setting
0
0
0
0
MgnRngExt
0
0
0
1
0
0
1
0
0
Rdy2hZ
0
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
Register 0x000B bit settings
(1) (2)
6.4.3 Output Registers
0x0111
0x0112
0x0113
0x0114
0x0120
0x0121
0x0122
Pixel 0
Bz
0
Pixel 1
Bz
1
Pixel 0
Bx
0
Pixel 1
Bx
1
Magnitude
(4)
Angle
(4)
Linearized
angle
(3)
Output
Registers
(4) CORDIC magnitude:
0.8234∙
1
(
𝐵𝑥
&
−𝐵𝑥
$
)
%
+
(
𝐵𝑧
&
−𝐵𝑧
$
)
%
CORDIC angle:
𝑎𝑡𝑎𝑛2
A
(
𝐵𝑧
&
−𝐵𝑧
$
)
,
(
𝐵𝑥
&
−𝐵𝑥
$
)
B
6.4.4 References
(1) see chapter 7.5 for explanation of bit Rdy2hZ
(2) see chapter 7.7 for explanation of bit MgnRngExt
(3) see chapter 7.8 for explanation of angle linearization
X
Z
Y
ball C1
Pixel 1
ball C1
Pixel 1
Pixel 0 Pixel 0