MLX90363 Datasheet, PDF (2/57 Pages) Melexis Microelectronic Systems – Triaxis® Magnetometer IC With High Speed Serial Interface

1. Functional Diagram
VDEC
MLX90363
Triaxis® Magnetometer IC
With High Speed Serial Interface
VDD
3V3
Reg
DSP
TEST
VSS
Tria is™ _VX
V_Y
V_Z
G
A _14D
µC
RAM
EEP
ROM
SPI(4)
Figure 1 – Block Diagram
2. Description
The MLX90363 is a monolithic magnetic sensor IC featuring the Tria⊗is® Hall technology. Conventional
planar Hall technology is only sensitive to the flux density applied orthogonally to the IC surface. The
Tria⊗is® Hall sensor is also sensitive to the flux density applied parallel to the IC surface. This is obtained
through an Integrated Magneto-Concentrator (IMC®) which is deposited on the CMOS die .
The MLX90363 is sensitive to the three (3) components of the flux density applied to the IC (i.e. BX, BY
and BZ). This allows the MLX90363 to sense any magnet moving in its surrounding and decode its
position through an appropriate signal processing.
Using its Serial Interface the MLX90363 can transmit a digital output (SP – 64 bits per frame).
The MLX90363 is intended for Embedded Position Sensor applications (vs. Stand-Alone “Remote”
Sensor) for which the output is directly provided to a microcontroller (Master) close to the magnetometer
IC MLX90363 (Slave). The SPI protocol confirms this intent.
The MLX90363 is using full duplex SPI protocol and requires therefore the separated SPI signal lines:
MOSI, MISO, /SS and SLCK¹.
1 _{The MLX90316 multiplexes the MOSI/MISO lines. The application diagrams of the MLX90363 and MLX90316 are therefore not}
compatible.
3901090363
Rev. 005
Page 2 of 57
Data Sheet
Jul/13