The MLX90393 brings the highest flexibility in the
Triaxis portfolio's smallest packaged assembly.
Additionally, the MLX90393 is designed for
micropower applications, with programmable
duty cycles in the range of 0.1% to 100% allowing
for configurable power consumption based on
system requirements.
The MLX90393 magnetic field sensor can be
reprogrammed to different modes and with
different settings at run-time to fine-tune the
performance and power consumed. The sensor
offers a 16-bit output proportional to the
magnetic flux density sensed along the X, Y, and Z
axes using the Melexis proprietary Triaxis
technology and offers a 16-bit temperature
output signal. These digital values are available via
I
2
C and SPI, where the MLX90393 is a slave on the
bus. Multiple sensors can be connected to the
same bus, by A
0
and A
1
hardwired connection (4x)
but also through ordering codes with different SW
address (4x).
By selecting which axes are to be measured, the
raw data can be used as input for further post-
processing, such as for joystick applications,
rotary knobs, and more complex 3D position
sensing applications. Unparalleled performance is
achieved with this sensor, which is primarily
targeting industrial and consumer applications.
2. Application Examples
Non-contacting HMI applications with
push-pull functionality
Rotary knobs & dials
(Long stroke) Linear motion in one or
two axes for levers & sliding switches
Joystick (gimball or ball & socket)
Temp Sensor
Bias
V
DD
V
DD_IO
A0
A1
State Machine
V
X
V
Y
V
Z
V
T
RAM
EEPROM
SDA/MOSI
SCL/SCLK
MISO
MS/CS
Interrupt
Trigger
MUX
Triaxis
®
G
ADC
Control
SPI/I2C
Interface
Temp Compensation
Oscillator
Low Power
Oscillator
Wake-Up
V
SS
Home Security 3D closure detection
Accurate liquid level sensing
Factory automation position sensing
Magnetic fingerprint detection
Figure 1: General Block Diagram
REVISION 003 - SEPTEMBER 14, 2017
3901090393
MLX90393 Triaxis® Magnetic Node
Datasheet
Contents
1. Features and Benefits ............................................................................................................................... 1
4. Ordering Information ............................................................................................................................... 4
12. Magnetic Specification ......................................................................................................................... 11
13.2. Single Measurement mode ......................................................................................................... 16
13.3. Wake-Up on Change mode.......................................................................................................... 16
14. Digital Specification .............................................................................................................................. 16
14.1. Command List .............................................................................................................................. 17
14.2. Status Byte ................................................................................................................................... 19
14.3. SPI Communication ...................................................................................................................... 19
14.4. I
2
C Communication ...................................................................................................................... 21
14.4.1. I
2
C Address ............................................................................................................................. 21
14.4.2. I
2
C Principle ............................................................................................................................ 21
C .................................................................................................................................................... 31
18. Standard Information ........................................................................................................................... 32
20. Revision History .................................................................................................................................... 33
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