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
Seite 5 von 44
Copyright © 2021, LZE GmbH
www.lze-innovation.de
FH3D02 Overview
1.3
Applications
− 3D position and orientation determination (using multiple devices)
o http://www.iis.fraunhofer.de/hallinmotion
− Magnetic field measurement in lab equipment
o http://www.iis.fraunhofer.de/hallinsight
− Mechanical position sensing in consumer and industrial applications
− Rotary encoder (standalone, PWM output)
− Linear positioning measurement
− Contactless angle measurement
− Current sensing
− Quality control
− Fluid level measurement
− 3D speed sensing
− Utility meters
− Current sensing
− Control knobs and selector switches
− 3D proximity sensing
− 3D valve positioning
REMARK: FH3D02 Dual 3D Hall sensors are not qualified for automotive applications.
If you would like to purchase qualified automotive devices, please contact LZE GmbH.
1.4
Functional Block Diagram
The sensor chip provides two 3D Hall pixels, which are supplied by an voltage regulator and are selected
by the sensor MUX. The analogue signal computation channel consists of a programmable gain amplifier
and offset centering, ΣΔ-modulator and a decimation register. The state machine controls voltage
regulator, sensor MUX, decimation, offset centering and performs a 4-phase measurement cycle and
temperature measurement. The decimation results are transmitted via a 4-wire SPI interface to a
connected SPI master.
Functional block diagram of the integrated sensor periphery
CLK
CS_ N
M OSI
SCK
Oscillator
4 Wire
SPI I n t er f ace
Supply
Voltage
Regulator
Hall-
sen so rs
Sen so r-
MUX
Offset-
Centering
Pre-
Amp
Temperat ure
Sensor
4-Bi t ΣΔ-
Modulator
Decimator
Decimation
Setting
Amplification
State Machine
LOCK_N
RESET_ N
SCE
LOPOWR
REA DY
M ISO