Data Sheet

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Copyright LZE GmbH 2021
FH3D02 Overview
Eine gemeinsame Initiative von
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, industrial, and automotive 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
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
MOSI
SCK
Oscillator
4 Wire
SPI Interface
Supply
Voltage
Regulator
Hall-
sensors
Sensor-
MUX
Offset-
Centering
Pre-
Amp
Temperature
Sensor
4-Bit ΣΔ-
Modulator
Decimator
Decimation
Setting
Amplification
State Machine
LOCK_N
RESET_N
SCE
LOPOWR
READY
MISO