Data Sheet
Table Of Contents
- 1 FH3D02 Overview
- 2 Characteristics
- 3 Package and Circuit Connection
- 4 SPI Communication
- 5 List of Registers
- 5.1 Measurement Register Contents
- 5.1.1 0x000B (read/write) – Measurement Control
- 5.1.2 0x000E (read/write) – Measurement Start
- 5.1.3 0x0107 (read only) – Status Register
- 5.1.4 0x0110 (read only) – Temperature Sensor
- 5.1.5 0x0111 (read only) – Bi0 Magnetic Field
- 5.1.6 0x0112 (read only) – Bi1 Magnetic Field
- 5.1.7 0x0113 (read only) – Bj0 Magnetic Field
- 5.1.8 0x0114 (read only) – Bj1 Magnetic Field
- 5.1.9 0x0120 (read only) – Magnetic Field Magnitude
- 5.1.10 0x0121 (read only) – Magnetic Field Angle
- 5.1.11 0x0122 (read only) – Linearized Angle / Bz1 Field (Special Function Mode)
- 5.1.12 0x0124 (read only) – Bz0 Magnetic Field (Special Function Mode)
- 5.2 Result Register Overview
- 5.1 Measurement Register Contents
- 6 Measurement Modes
- 6.1 Single Magnetic Probe
- 6.2 Dual Magnetic Probe
- 6.3 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet On-Top)
- 6.4 Linear Position or Off-Axis Angle Sensor (Gradient Field Values, Magnet On-Top)
- 6.5 Linear Position or Off-Axis Angle Sensor (Absolute Field Values, Magnet At-The-Side)
- 6.6 Linear Position or Off-Axis Angle Sensor (Gradient Field Values, Magnet At-The-Side)
- 7 Additional Features
- 8 LZE GmbH
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Measurement Modes
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
(
)
+
(
)
CORDIC angle: 2
(
)
,
(
)
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