MLX90393 Flyer Datasheet by Melexis Technologies NV

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Tric1®is® Melexis
The MLX90393 is the newest addition to the Melexis position sensing
portfolio, bringing the highest fl exibility in the portfolio’s smallest assembly.
Complementing this, the magnetic fi eld sensor is designed for micropower
applications, with programmable duty cycles in the range of 0.1% to 100%.
FOR MORE INFORMATION: WWW.MELEXIS.COM/MLX90393
With its 3x3mm footprint, the Melexis MLX90393 can fi t in the tiniest of assemblies. It provides a digital
output proportional to the sensed magnetic fl ux density along the 3 perpendicular axes of symmetry of the
sensor. But the miniature sensor is mostly characterized by the fact that it can interchange measurement
speed for both current consumption and noise on the digital output signal, making it the raw building block for
any magnetic sensing application up to 85degC.
An external microcontroller can then combine the measurement data in order to defi ne the position of the
magnet with respect to the sensor. All this at a selectable dutycycle of 0.1% to 100%.
MAGNETIC FIELD SENSOR
MLX90393
MAGNETOMETER
MLX90393
MICROPOWER TRIAXIS®
Thanks to its magnetic compass the fascinating honey bee
has the ability to perceive the omnipresent magnetic eld (MF)
of the Earth. This magnetic fi eld sensitivity matches this wonderful
creature with our Triaxis® magnetic sensors.
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The above information is “as is” and believed to be correct and accurate. Melexis disclaims any and all liability in connection with or arising out of the furnishing, application or use of the information or products; any and all liability, including without limitation, special, consequential or incidental damages;
and any and all warranties, express, statutory, implied, or by description, including warranties of fitness for particular purpose, non-infringement and merchantability. Melexis reserves the right to change it at any time and without notice. Users should obtain the latest version of the information to verify
it is current. Users must further determine the suitability of a product for its application, including the level of reliability required and determine whether it is fit for a particular purpose. Export control regulations may apply and export might require a prior authorization from competent authorities.
Melexis’ products are intended for use in normal commercial applications. Unless otherwise agreed upon in writing, the products are not designed, authorized or warranted to be suitable in applications requiring extended temperature range and/or unusual environmental requirements. High reliability
applications, such as medical life-support or life-sustaining equipment are specifically not recommended by Melexis. Melexis’ products are sold under the Melexis’ Terms of Sale, which can be found at https://www.melexis.com/en/legal/terms-and-conditions.
k Micropower (2.2V - 3.6V, 2µA IDLE current)
k Low-voltage I/O (1.8V - Vdd)
k SPI (3+4-wire) & I2C interface, slave node
k 16-bit XYZ magnetic and T thermal measurement
k QFN3x3 package, 16 leads
k In-application programmable (gain, mode, axes, ...)
k Ta = -40 .. 85degC
IA
VDD
VSS
SPI/I2C
CONTROL INTERFACE
TEMP
SENSOR
16B
ADC
EEPROMOSCLP OSC WAKE-UP
BIAS
MUX
IA
The MLX90393 lends itself for a wide variety of Human-Machine Interfaces such as Joystick (Gimball,
Ball&Socket) with Push detection, Rotary knobs with Push function and linear strokes by levers or sliding switches.
The sensor output data needs to be post-processed in order to calculate the angles or norms of the vector
in order to get the desired position signal(s). This requires off-chip computation, and is a clear advantage in
system-level partitioning by having one microcontroller interfacing w/ many sensors on the same bus.
THREE DIFFERENT OPERATING MODES:
1. Single measurement mode
2. Burst mode
3. Wake-up on change mode
In single measurement mode, a bus master is requesting the sensor to perform a measurement, either by
transmission of a command, or by issuing a trigger signal. Whenever the sensor is in burst mode, it is waking up
and going back to sleep at a in-application programmable dutycycle. Finally, the wake-up on change function
offers the same functionality as the burst mode, but only setting the interrupt pin high whenever the latest
measurement differs more than a programmable threshold from either the previous measurement or the first
measurement when entering the mode.
HUMAN-MACHINE INTERFACE (HMI)
1. Sensing element for the Internet of Things (IoT)
2. Metering
Impeller-based meters 360degree impeller
position detection incl. anti tampering
Meter mechanical counter digit readout
General tri-axial tampering detection
Gauss-meter
3. Human-machine interface
Joystick with push function
Rotary knob with push function
Lever/slide switch linear stroke
4. Valve and piston position, industrial sensing
5. Robotics & factory automation
MAIN APPLICATIONS
BLOCK DIAGRAM

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