MELEXIS MLX90366


MLX90366
Triaxis Position Sensor Assembly feat. SENT
Features and Benefits
Triaxis Hall Technology
On Chip Signal Processing for Robust Absolute Position Sensing
Simple Magnetic Design
Programmable Measurement Range
Programmable Linear Transfer Characteristic (Multi-points)
SENT output (according to SAE J2716-2010)
12 bit Resolution - 10 bit Thermal Accuracy
48 bit ID Number option
Robust Dual Mold Package (DMP) feat. 4 Decoupling Capacitors (ESD/EMC)
Reliable NoPCB Module Integration
Applications
Absolute Rotary Position Sensor
Pedal Position Sensor
Throttle Position Sensor
Ride Height Position Sensor
Absolute Linear Position Sensor
Steering Wheel Position Sensor
Float-Level Sensor
Non-Contacting Potentiometer
Ordering Information1
Part No.
Temperature Code
Package Code
Option Code
Packing Code
L
L
L
L
L
L
L
VS
VS
VS
VS
VS
VS
VS
ADS-200
ADS-200
ADS-200
ADS-201
ADS-201
ADS-203
ADS-203
RE
RX
TU
RE
RX
RE
RX
MLX90366
MLX90366
MLX90366
MLX90366
MLX90366
MLX90366
MLX90366
Legend:
Temperature Code:
Package Code:
Option Code:
Packing Form:
Ordering Example:
1
L for Temperature Range - 40°C to 150°C,
VS for DMP-4
AAA-123:
AAA: die version
1: IMC placement
23: Trim and form option:
 00: Standard (straight leads) see section 20.1
 01: Trim and Form STD1 2.54 see section 20.2
 03: Trim and Form STD2 2.54 see section 20.3
RE for Reel (face-up)
RX for Reel (face down)
TU for Tube
MLX90366LVS-ADS-200-RE
See your sales representative for more details.
MLX90366
Rev. 1.0
Page 1 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
1. Functional Diagram
VDIG
DSP
Reg
VX
-
VY
VZ
M
U
X
G
Rev.Pol.
&
OverVolt.
VDD
VSS
A
D
C
R
O
M
F/W
RAM
Out (SENT)
EEP
ROM
Figure 1 - MLX90366 Block Diagram
MLX90366
Rev. 1.0
Page 2 of 34
Datasheet
25/Jun/13

MLX90366
Triaxis Position Sensor Assembly feat. SENT
2. Description
The MLX90366 Triaxis® Position Sensor Assembly is a high accuracy linear and angular position sensor
which eliminates need for inclusion of a printed circuit board (PCB) within sensing modules.
This device is based on a Dual Mold Package (DMP) construction, which integrates a Triaxis position
sensing die together with the decoupling capacitors necessary to meet the strenuous ESD and EMC
requirements. No PCB is needed.
The Triaxis® Position Sensing Die is nothing but the one used for the MLX90367 in conventional surfacemount packages (SOIC-8 – single die & TSSOP-16 – dual die).
The decoupling capacitors are X8R capacitors well suited for package integration and the target operating
temperature range.
The MLX90366 is sensitive to the three components of the flux density applied to the IC (i.e. BX, BY and
BZ). This allows the MLX90366 with the correct magnetic circuit to decode the absolute position of any
moving magnet (e.g. rotary position from 0 to 360 Degrees or linear displacement, stroke - Figure 2). It
enables the design of novel generation of non-contacting position sensors that are frequently required for
both automotive and industrial applications.
MLX90366 provides SENT Frames encoded according the Secure Sensor format.
The circuit delivers enhanced serial messages providing error codes, and user-defined values.
MLX90366 Triaxis® Position Sensor Assembly enables the realization of position sensor modules for
which a PCB is no longer needed: this yield to an increase of the electrical, mechanical and environmental
robustness of the final application.
MLX90366
Rev. 1.0
Page 3 of 34
Datasheet
25/Jun/13

MLX90366
Triaxis Position Sensor Assembly feat. SENT
TABLE of CONTENTS
FEATURES AND BENEFITS ....................................................................................................................... 1
APPLICATIONS ............................................................................................................................................ 1
ORDERING INFORMATION......................................................................................................................... 1
1.
FUNCTIONAL DIAGRAM...................................................................................................................... 2
2.
DESCRIPTION ....................................................................................................................................... 3
3.
GLOSSARY OF TERMS  ABBREVIATIONS  ACRONYMS ............................................................ 6
4.
PINOUT .................................................................................................................................................. 6
5.
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 7
6.
DESCRIPTION ....................................................................................................................................... 7
7.
MLX90366 ELECTRICAL SPECIFICATION ......................................................................................... 9
8.
MLX90366 TIMING SPECIFICATION ................................................................................................. 10
8.1.
8.2.
9.
TIMING DIAGRAMS ........................................................................................................................................ 11
APPLICATION DIAGRAM USED FOR RISE AND FALL TIME MEASUREMENT ....................................................... 12
MLX90366 ACCURACY SPECIFICATION ......................................................................................... 13
10. MLX90366 MAGNETIC SPECIFICATION .......................................................................................... 14
11. MLX90366 CPU & MEMORY SPECIFICATION ................................................................................. 14
12. MLX90366 END-USER PROGRAMMABLE ITEMS ........................................................................... 15
13. SENT OUTPUT PROTOCOL .............................................................................................................. 16
13.1.
GENERALITY ............................................................................................................................................. 16
13.2.
SINGLE SECURE FAST CHANNEL ............................................................................................................... 16
13.2.1. Frame Content...................................................................................................................................... 16
13.2.2. Diagnostic Reporting through the fast channel .................................................................................... 16
13.2.3. Pause pulse........................................................................................................................................... 17
13.2.4. Fast Channel CRC................................................................................................................................ 17
13.3.
SLOW CHANNEL ........................................................................................................................................ 17
13.3.1. Enhanced Serial Message .................................................................................................................... 17
13.3.2. Serial Message Sequence ..................................................................................................................... 18
13.3.3. Serial message sequence period ........................................................................................................... 19
13.3.4. Serial Message Error Code .................................................................................................................. 19
13.4.
START-UP .................................................................................................................................................. 20
13.5.
FIELD SENSING (ADC CONVERSIONS) AND THE FRAME SYNCHRO PULSE .................................................. 20
14. DESCRIPTION OF END-USER PROGRAMMABLE ITEMS .............................................................. 21
14.1.
OUTPUT TRANSFER CHARACTERISTIC....................................................................................................... 21
14.1.1. CLOCKWISE Parameter ...................................................................................................................... 21
14.1.2. Discontinuity Point (or Zero Degree Point) ......................................................................................... 22
14.1.3. 17-Pts LNR Parameters........................................................................................................................ 22
14.1.4. CLAMPING Parameters ...................................................................................................................... 23
14.2.
IDENTIFICATION ........................................................................................................................................ 23
14.3.
SENSOR FRONT-END ................................................................................................................................. 23
14.3.1. MAPXYZ ............................................................................................................................................... 24
14.3.2. SMISM, k and SEL_k Parameters ........................................................................................................ 24
14.3.3. GAINMIN and GAINMAX Parameters ................................................................................................ 24
14.4.
FILTER ...................................................................................................................................................... 25
14.5.
DIAGNOSTIC FEATURES ............................................................................................................................ 25
14.6.
EEPROM ENDURANCE ............................................................................................................................. 25
MLX90366
Rev. 1.0
Page 4 of 34
Datasheet
25/Jun/13
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MLX90366
Triaxis Position Sensor Assembly feat. SENT
15. MLX90366 SELF DIAGNOSTIC .......................................................................................................... 26
16. BUILT-IN CAPACITORS ..................................................................................................................... 27
17. STANDARD INFORMATION REGARDING MANUFACTURABILITY OF MELEXIS PRODUCTS
WITH DIFFERENT LEAD PRE-FORMING AND SOLDERING/WELDING PROCESSES ....................... 27
18. ESD PRECAUTIONS ........................................................................................................................... 27
19. PACKAGE INFORMATION ................................................................................................................. 28
19.1.
19.2.
19.3.
19.4.
19.5.
DMP-4 – PACKAGE OUTLINE DIMENSIONS (POD) – STRAIGHT LEADS .................................................... 28
DMP-4 – PACKAGE OUTLINE DIMENSIONS (POD) – TRIMMED & FORMED LEADS [1] ............................. 29
DMP-4 – PACKAGE OUTLINE DIMENSIONS (POD) – TRIMMED & FORMED LEADS [2] ............................. 30
DMP-4 - MARKING ................................................................................................................................... 31
DMP-4 - SENSITIVE SPOT POSITIONING & SENSE DIRECTION ................................................................... 32
20. DISCLAIMER ....................................................................................................................................... 34
MLX90366
Rev. 1.0
Page 5 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
3. Glossary of Terms  Abbreviations  Acronyms














Gauss (G), Tesla (T): Units for the magnetic flux density  1 mT = 10 G
TC: Temperature Coefficient (in ppm/Deg.C.)
NC: Not Connected
SENT: Single Edge Nibble Transmission
ADC: Analog-to-Digital Converter
LSB: Least Significant Bit
MSB: Most Significant Bit
DNL: Differential Non-Linearity
INL: Integral Non-Linearity
RISC: Reduced Instruction Set Computer
ASP: Analog Signal Processing
DSP: Digital Signal Processing
CoRDiC: Coordinate Rotation Digital Computer (i.e. iterative rectangular-to-polar transform)
EMC: Electro-Magnetic Compatibility
4. Pinout
Pin #
MLX90366
Rev. 1.0
1
VSS (Ground)
2
VDD
3
OUT
4
VSS (Ground)
Page 6 of 34
Datasheet
25/Jun/13

MLX90366
Triaxis Position Sensor Assembly feat. SENT
5. Absolute Maximum Ratings
Supply Voltage, VDD (overvoltage)
 24 V
Reverse Voltage Protection
 12 V (breakdown at -14 V)
Positive Output Voltage
 18 V (breakdown at 24 V)
Output Current (IOUT)
 30 mA (in breakdown)
Reverse Output Voltage
 0.3 V
Reverse Output Current
 50 mA (in breakdown)
Operating Ambient Temperature Range, TA
 40°C   150C
Storage Temperature Range, TS
 40°C   150C
Magnetic Flux Density
1T
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum
rated conditions for extended periods may affect device reliability.
6. Description
As described on the block diagram the three vector components of the magnetic flux density (BX, BY and
BZ) applied to the IC are sensed through the sensor front-end. The respective Hall signals (VX, VY and VZ)
are generated at the Hall plates and amplified.
The analog signal processing is based on a fully differential analog chain featuring the classic offset
cancellation technique (Hall plate 2-Phases spinning and chopper-stabilized amplifier).
The conditioned analog signals are converted through an ADC (15 bits) and provided to a DSP block for
further processing. The DSP stage is based on a 16 bit RISC micro-controller whose primary function is
the extraction of the position from two (out of three) raw signals (after so-called front-end compensation
steps) through the following function:
  V1 , k V2 
Where alpha is the magnetic angle (B1, B2), V1 = VX or VY or VZ , V2 = VX or VY or VZ and k is a
programmable factor to match the amplitude of V1 and k V2.
The DSP functionality is governed by the micro-code (firmware  F/W) of the micro-controller which is
stored into the ROM (mask programmable). In addition to the magnetic angle extraction, the F/W controls
the whole analog chain, the output transfer characteristic, the output protocol, the programming/calibration
and also the self-diagnostic modes.
The magnetic angular information is intrinsically self-compensated vs. flux density variations. This feature
allows therefore an improved thermal accuracy vs. position sensor based on conventional linear Hall
sensors.
In addition to the improved thermal accuracy, the realized position sensor features excellent linearity
performance taking into account typical manufacturing tolerances (e.g. relative placement between the
Hall IC and the magnet).
MLX90366
Rev. 1.0
Page 7 of 34
Datasheet
25/Jun/13

MLX90366
Triaxis Position Sensor Assembly feat. SENT
Once the position (angular or linear stroke) information is computed, it is further conditioned (mapped) vs.
the target transfer characteristic and it is provided at the output(s) as SENT output.
The linear part of the transfer curve can be adjusted through a multi-point calibration:
This back-end step consists of a Piece-Wise-Linear (PWL) output transfer characteristic - 17 equidistant
points with programmable origin over 16 different angle ranges from 65 to 360 degrees.
The calibration parameters are stored in EEPROM featuring a Hamming Error Correction Coding (ECC).
The programming steps do not require any dedicated pins. The operation is done using the supply and
output nodes of the IC. The programming of the MLX90366 is handled at both engineering lab and
production line levels by the Melexis Programming Unit PTC-04 with the daughterboard DB90316 +
dedicated MLX90367 software.
MLX90366
Rev. 1.0
Page 8 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
7. MLX90366 Electrical Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (L).
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
4.5
5
5.5
V
Nominal Supply Voltage
VDD
Supply
Current(2)
Idd
10
mA
Isurge
Current(3)
Isurge
20
mA
Power-On reset ( rising )
HPOR_LH
2.5
V
Power-On reset Hysteresis
HPOR_Hyst
50
200
mV
Start-up Level ( rising )
MT4V LH
3.8
4.2
V
Start-up Hysteresis
MT4V Hyst
50
200
mV
PTC Entry Level ( rising )
MT7V_LH
5.8
6.6
V
PTC Entry Level Hysteresis
MT7V_Hyst
50
200
mV
15
15
18
mA
mA
mA


k
k
Refer to internal voltage Vdig
2
Output Short Circuit Current
Ishort
Vout = 0 V
Vout = 5 V
Vout = 18 V (TA = 25°C)
Output Load
RL
Pull-down to Ground
Pull-up to 5V
4.7
4.7
BVSSPD
Broken VSS &
Pull-down load RL  10 kΩ
97.5
BVSSPU
Broken VSS &
Pull-up load RL  4.7kΩ
99.5
BVDDPD
Broken VDD &
Pull-down load RL  4.7kΩ
BVDDPU
Broken VDD &
Pull-up load RL  5kΩ
Passive Diagnostic Output
Level
(Broken Track Diagnostic) (4)
2.25
4.0
6.2
10
10
%VDD
100
0
%VDD
0.5
%VDD
2
%VDD
2 For
the dual version, the supply current is multiplied by 2.
The specified value is valid during early start-up time only; the current might dynamically exceed the specified value, shortly,
during the Start-up phase. This current peak is linked a.o. to the charging of the integrated capacitors.
4 The SENT output signal will no longer be reported. For detailed information, see also section 15.
3
MLX90366
Rev. 1.0
Page 9 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
8. MLX90366 Timing Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (L).
Parameter
Main Clock Frequency
Main Clock Frequency Thermal
Drift
Symbol
Test Conditions
Min
Typ
Max
Ck
All contributors (trimming accuracy,
supply voltage, thermal and ageing)
12.6
13.3
14
MHz
 3%
CkNOM
TCk
Tick time
SENT Frame Period
tframe
Internal Angle Measurement
Period
tper
First Angle Measurement to
Sync Pulse latency
ta1
Second Angle Measurement to
Sync Pulse latency
ta2
Field Change to SENT Data :
Average Latency
Latency
Exact value for Ck = 13.3 MHz
The typical value will be affected
by any variation of the clock
FILTER = 1 (recommended)
SENT Transmission Included
SENT Frame Tick Count
Watchdog
twd
Start-up Time (up to first sync
pulse)
tsu1
Start-up Time (up to first data
received)
tsu2
3
μs
882
μs
441
μs
1084
μs
643
μs
1745
1745
294
294
114.5
118
121.5
1.8
Last pause pulse not included
Serial Message
Extended sequence ( 18 frames )
Short sequence ( 8 frames )
Rise Time @ Cable
Thresholds : 0.5V and 4.5V
See section 8.2
Units
5.9
μs
ms
ms
6.3
15.876
7.056
ms
ms
μs
2.97
5.31
Rise Time @ Receiver
5.07
6.84
μs
Fall Time @ Cable
2.65
2.82
μs
Fall Time @ Receiver
4.84
4.9
μs
MLX90366
Rev. 1.0
Page 10 of 34
Datasheet
25/Jun/13
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MLX90366
Triaxis Position Sensor Assembly feat. SENT
8.1. Timing diagrams
Figure 2 – Start-up phase timings
Figure 3a – Latencies (acquisition to output delays) – FILTER = 1 (recommended)
Figure 3b – Latency - Case FILTER = 0 (not recommended)
MLX90366
Rev. 1.0
Page 11 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
8.2. Application diagram used for rise and fall time measurement
Figure 4 –Schematic used for rise and fall time measurements (ref: J2716 Rev Jan 2010 Fig. 6.3.4)
Component
C01
C02
R01
Cinput
CTau
Cf
RTau
Rf
RPU
RV
Value
10 (integrated in the
DMP)
not mounted
not mounted
68
2.2
100
568
10
14.7
not mounted
Unit
nF
nF
Ohms
pF
nF
pF
Ohms
kOhms
kOhms
Ohms
Component values used for rise and fall time measurements (ref: J2716 Rev Jan 2010 Fig. 6.3.4)
MLX90366
Rev. 1.0
Page 12 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
9. MLX90366 Accuracy Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (L).
Parameter
Symbol
ADC Resolution on the raw
signals sine and cosine(5)
Thermal Offset Drift #1(6)
at the DSP input (excl. DAC and
output stage)
Thermal Drift of Sensitivity
Mismatch(7)
RADC
Magnetic Angle phase error
Thermal Drift of Magnetic Angle
phase error
XY – Intrinsic Linearity Error(8)
XZ - Intrinsic Lin. Error(11)
YZ - Intrinsic Lin. Error(11)
Noise pk-pk(9)
Le
Le
Le
Test Conditions
Min
Typ
Max
15
bits
TA from -40 to 125°C
TA from -40 to 150°C
-60
-90
+60
+90
XY axis
XZ (YZ) axis
TA = 25C – XY axis
TA = 25C – XZ axis
TA = 25C – YZ axis
XY axis, XZ (YZ) axis
- 0.5
-1
-0.3
-2
-2
+ 0.5
+1
0.3
2
2
TA = 25C – factory trim. “SMISM”
TA = 25C – “k” trimmed for XZ
TA = 25C – “k” trimmed for YZ
FILTER = 0, 40mT
FILTER = 1 (recommended) , 30mT
0.01
-1
-2.5
-2.5
1.25
1.25
0.10
0.10
Units
LSB15
%
Deg.
Deg.
1
2.5
2.5
0.2
0.2
Deg
Deg
Deg
Deg
16 bits corresponds to 15 bits + sign. Internal computation is performed using 16 bits.
instance, in case of a rotary position sensor application, Thermal Offset Drift #1 equal ± 60LSB15 yields to max. ± 0.3 Deg.
angular error for the computed angular information (output of the DSP). This is only valid if k = 1. “MLX90365 Front-End
Application Note” will be released for more details.
7
For instance, in case of a rotary position sensor application, Thermal Drift of Sensitivity Mismatch equal ± 0.5% yields to max. ±
0.15 Deg. angular error for the computed angular information (output of the DSP). See “MLX90365 Front-End Application Note”
for more details.
8
The Intrinsic Linearity Error refers to the IC itself (offset, sensitivity mismatch, orthogonality) taking into account an ideal rotating
field for BX and BY. Once associated to a practical magnetic construction and the associated mechanical and magnetic
tolerances, the output linearity error increases. However, it can be improved with the multi-point end-user calibration. The intrinsic
Linearity Error for Magnetic angle XZ and YZ can be reduced through the programming of the k factor.
9
Noise pk-pk (peak-to-peak) is here intended as 6 times the Noise standard Deviation. The application diagram used is
described in the recommended wiring. For detailed information, refer to section Filter in application mode (Section 14.4).
5
6 For
MLX90366
Rev. 1.0
Page 13 of 34
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
10.
MLX90366 Magnetic Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (L).
Parameter
Symbol
Magnetic Flux Density
Magnetic Flux Density
BX, BY(10)
Magnetic Flux Norm
IMC Gain(13)
Norm
GainIMC
Test Conditions
Typ
√[ BX 2 + BY 2 ]
BZ(12)
√[ BX2 + BY2 + (Bz/1.15)2 ]
Magnet Temperature Coefficient TCm
11.
Min
20(12)
1.15
1.3
-2400
Max
Units
70(11)
mT
126
mT
mT
1.4
0
ppm/°C
MLX90366 CPU & Memory Specification
The DSP is based on a 16 bit RISC µController. This CPU provides 2.5 Mips while running at 10 MHz.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
ROM
10
KB
RAM
384
B
EEPROM
128
B
The condition must be fulfilled for at least one field BX or BY.
Above 70 mT, the IMC® starts saturating yielding to an increase of the linearity error.
12
Below 20 mT, the performances slightly degrade due to a reduction of the signal-to-noise ratio, signal-to-offset ratio.
13
This is the magnetic gain linked to the Integrated Magneto Concentrator (IMC®) structure. It applies to BX and BY and not to
BZ. This is the overall variation. Within one lot, the part to part variation is typically ± 10% versus the average value of the IMC®
gain of that lot
10
11
MLX90366
Rev. 1.0
Page 14 of 34
Datasheet
25/Jun/13
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MLX90366
Triaxis Position Sensor Assembly feat. SENT
12.
MLX90366 End-User Programmable Items
Parameter
MAPXYZ
CLAMP_HIGH
CLAMP_LOW
SMISM
K
Sel_K
GAINMIN
GAINMAX
GAINSATURATION
PWMPOL
DP
CW
MELEXISID1
MELEXISID2
MELEXISID3
W
LNR_Yn
DIAG Settings
CRC_DISABLE
FILTER
RAM Probe
SERIAL_ID_1
SERIAL_ID_2
SERIAL_ID_3
SERIAL_ID_4
EE_SENT_SERIAL
EE_SERIAL_DATA_1
EE_SERIAL_DATA_2
EE_SERIAL_DATA_3
EE_SERIAL_DATA_4
EE_USERID1
EE_USERID2
EE_USERID3
MLX90366
Rev. 1.0
Comments
Mapping fields for output angle
Clamping High (50%)
Clamping Low (50%)
Sensitivity mismatch factor X,Y
Sensitivity mismatch factor X (Y) , Z
Location for for K – correction
Low threshold for virtual gain
High threshold for virtual gain
Gain Saturates on GAINMIX and GAINMAX
PWM polarity
Discontinuity point
Clock Wise
Melexis identification reference
Melexis identification reference
Melexis identification reference
17pts – Output angle range
17pts – Y-coordinate point n (n = 2,1,2 …16)
16 Bit Diagnostics enablling
Enable EEPROM CRC check ( 3131h= disable)
FIR Filter
Address for RAM probe
Not available to USER until MemLock performed.
See: EEPROM_MLX90366_default_settings.doc
for more details
ID of user serial message #2
ID of user serial message #3
ID of user serial message #4
Page 15 of 34
Standard
# bit
0
0%
100%
MLX
MLX
0
00h
28h
0h
1h
0h
0h
MLX
MLX
MLX
0h
0..100%
FDFFh
0h
0
0
56EEh
2
16
16
15
15
1
8
8
1
1
15
1
16
16
16
4
16
16
16
1
16
16
0
0
0
0
0
0
0
0
1
303h
MLX
16
16
16
16
16
16
16
16
16
16
16
Datasheet
25/Jun/13
MLX90366

Triaxis Position Sensor Assembly feat. SENT
13.
SENT output Protocol
13.1. Generality
The MLX90366 complies with the sub-set “A.3 Single Secure Sensors” of the norm J2716 Revised
JAN2010, but one restriction: the mode without pause pulse is not featured.
13.2. Single Secure Fast Channel
MLX90366 delivers SENT frames according the Single Secure format. This format is explicitly described
in this section.
13.2.1. Frame Content
The MLX90366 SENT frames have 6 data nibbles, and are formatted according the below table. The
optional Pause Pulse is however always present so that every messages have the same fixed length.
SENT Frame : Status
D1-MSN D1-MidN D1-LSN
D2-MSN D2-MidN
Status[0]
Channel 1 indicator ( "1" = error, "0" otherw ise )
Status[1]
0
Status[2]
Enhanced Serial Message
Status[3]
Enhanced Serial Message
CRC
Enhanced CRC (the legacy CRC is not featured)
D1
12 bit angle
D2-MSN
D2-MSN=Rolling Counter-MSN
D2-MidN
D2-MidN=RollingCounter-MidN
D2-LSN
D2-LSN=Inv erted copy of D1-MSN
D2-LSN
CRC
Optional Pause
13.2.2. Diagnostic Reporting through the fast channel
13.2.2.1. Diagnostic Reporting, bit Status[0]
The bit Status[0] is high whenever the three following conditions are met:
1. A diagnostic (analog/environmental) detects an error *
2. The reporting of the above error is enabled **
3. The debouncing time has elapsed.
* A diagnostic of type digital cause the circuit to switch in fail-safe-mode
** See EEPROM bits EE_DIAG_SETTINGS
13.2.2.2. Diagnostic Reporting, Channel 1
The diagnostic can be reported through the 12 bit payload of channel 1, and not only through the status
bit Status[0].
The EEPROM parameters EE_ERRORCODE controls the diagnostic reporting through channel 1 as
follow:
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If EE_REPORT[2:0]=0, the channel 1 reports the angle, and not the diagnostic, as if no diagnostic.
The error is reported only thanks to the Status bits.
If EE_REPORT[2:0]>0, the channel1 payload contains the value Channel1 = (4088 + EE_REPORT[2:0])
13.2.2.3. Diagnostic Reporting Time
The Diagnostic Reporting Time is programmable (defined as multiple of a macro-cycle unit time).
A macro-cycle is a sequence of 20 angle acquisitions, and has a duration of approximately 6 ms.
13.2.2.4. Diagnostic Debouncing
The Diagnostic Reporting is Debounced. The debouncing paramater is user-programmable, by steps of
approximately 6 ms.
13.2.3. Pause pulse
A pause pulse, as defined by the standard, is present at the end of every frame.
The pause pulse mode cannot be disabled.
The pause pulse lenght is adjusted by the circuit so that the frame period is constant.
The field sensing and the frame synchro pulse are in sync.
13.2.4. Fast Channel CRC
The MLX90366 features the new recommended implementation.
13.3. Slow Channel
13.3.1. Enhanced Serial Message
The circuit encodes the slow messages according the Enhanced Serial Message Format as specified at
Chapter 5.2.4.3 of the SENT norm, except for the following restriction:
The configuration bit is always 0, meaning that the payload consists in 12-bit data and 8-bit message ID.
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13.3.2. Serial Message Sequence
The circuit complies with the following sub-set specifications of the norm for pressure sensors
(The norm for the angular sensor case does not specify the serial message format)
#
8bit ID
Item
12 bit data
Comments
1
29
Sensor ID
Prog.
EE_USERID1_12LSB
2
01
Error Code
RAM
Described at next chapter …
3
2A
Prog.
4
01 / 80
5
2B
Sensor ID
Error Code / User-defined RAM
value
Sensor ID
{EE_USERID2_8LSB, EE_USERID1_4MSB }
RAM variable @ address EE_RAM_PROBE_ADDR
e.g. Temp, GainCode, FieldStrength
{ EE_USERID3_4LSB,EE_USERID2_8MSB }
6
01
Error Code
RAM
7
2C
Prog.
8
01 / 80
Sensor ID
Error Code / User-defined RAM
value
RAM
Prog.
EE_USERID3_12MSB
RAM
Optional Part ( EE_ExtendedSequence = 1 )
9
06
SENT Revision
003
10
01
Error Code
RAM
11
EE_SERIAL_ID1
EE_SERIAL_DATA_1
12
01 / 80
13
EE_SERIAL_ID12
User-defined #1
Error Code / User-defined RAM
value
User-defined #2
14
01
Error Code
RAM
15
EE_SERIAL_ID3
EE_SERIAL_DATA_3
16
01 / 80
17
EE_SERIAL_ID4
User-defined #3
Error Code / User-defined RAM
value
User-defined #4
18
01
Error Code
RAM
RAM
EE_SERIAL_DATA_2
e.g. Sensor type, Manufacturing code
RAM variable @ address EE_RAM_PROBE_ADDR
e.g. Temp, GainCode, FieldStrength
e.g. 07 – Transfer Characteristic
e.g. 03 – Sensor Type
RAM
EE_SERIAL_DATA_4
Table. Serial Message Sequence
The first part (positions 1 to 8) provides the Error Code and the Sensor ID alternatively.
The second part (positions 9 to 18) is optional as a whole enabled with EEPROM bit
EE_ExtendedSequence.
This second part consists of the error code (5 occurrences), 4 User-defined messages (ID and data) and
the SENT revision.
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13.3.3. Serial message sequence period
Sequence Length
(serial message count)
Sequence Length
(frame count)
Sequence Period
(ms, typical)
8
144
121
18
324
273
13.3.3.1. User-defined RAM Value
The payloads of the positions 4, 8 (and 12, 16 if relevant) are user-defined. Three possibilities:
1. Error Code
2. 12 LSBs of a user-defined RAM value
3. 12 MSBs of a user-defined RAM value
The positions 4, 8, 12, 16 refer necessarily to the same user-defined RAM address.
Three RAM addresses are of interest:
Variable name
ramTempSens
VG
Norm
Address
4E
46
48
Description
Calibrated Temperature sensor value
Actual Virtual Gain
Actual field norm
The actual absolute Temperature (T) can be derived from the 12 MSBs of ramTempSens (see possibility
3 above) using the following formula (decimal):
T = 8 × (ramTempSens – 35) + 2048
The accuracy of the actual Temperature is = ± 10 DegC.
13.3.3.2. Error Code Rate
The Error Codes are on purpose transmitted every second message, to maximize the rate, which equals
then 36 SENT frames, when the user-defined RAM mode is not enabled (72 otherwise).
13.3.4. Serial Message Error Code
MLX90366
Rev. 1.0
Bit position
Diagnostic
Comments
0
GainOOS
Front-end Gain code Out-of-spec (too low, too high)
3
ADCSatura
Diag
4
ADCMonitor
ADC monitor
5
VanaMoni
Analog Internal Supply Too Low
6
VddMoni
External Supply Too Low, Too High
7
Rough Offset
Front-end Rough Offset too low, too high
8
TempMonitor
Temperature Sensor monitor
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13.4. Start-up
During the chip initialization, the output remains high until the circuit emits four initialization frames (all 6
data nibble zero). The fifth frame is not an initialization frame but a valid frame containing a measured
angle. See also section 8 “Timing specifications”.
13.5. Field sensing (ADC conversions) and the frame Synchro pulse
The digital angle (fast channel payload) results of the average of two angles.
These angles are themselves computed from 4 ADCs values.
The time between the ADCs and the frame synchro pulse is constant.
As a result, the phase delay between the magnetic field angle and the SENT synchro pulse is constant,
allowing filtering at the ECU side.
See also section 8 “Timing specifications”.
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14.
Description of End-User Programmable Items
14.1. Output Transfer Characteristic
To define the transfer function (LNR):
 With 17 equidistant points for which only the Y coordinates are defined.
Parameter
Value
Unit
CLOCKWISE
0  CounterClockWise
1  ClockWise
LSB
DP
0  359.9999
Deg
LNR_Y0
LNR_Y1
…
LNR_Y16
-50 … + 150
%
W
65.5 … 360
Deg
CLAMP_LOW
0  100
%
CLAMP_HIGH
0  100
%
14.1.1. CLOCKWISE Parameter
The CLOCKWISE parameter defines the magnet rotation direction.


CCW is defined by the 1-2-3-4 pin order direction for the Dual Mold Package.
CW is defined by the reverse direction: 4-3-2-1 pin order direction for the Dual Mold Package
Refer to the drawing in the sensitive spot positioning section (Section 19.5)
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14.1.2. Discontinuity Point (or Zero Degree Point)
The Discontinuity Point defines the 0° point on the circle. The discontinuity point places the origin at any
location of the trigonometric circle. The DP is used as reference for all the angular measurements.
360°
0°
The placement of the discontinuity
point (0 point) is programmable.
Figure 5 - Discontinuity Point Positioning
14.1.3. 17-Pts LNR Parameters
The LNR parameters, together with the clamping values, fully define the relation (the transfer function)
between the digital angle and the output signal.
The shape of the MLX90366 transfer function from the digital angle value to the output voltage is
described by the drawing below. In the 16-Pts mode, the output transfer characteristic is Piece-WiseLinear (PWL).
LNR_Y16
100%
CLAMPHIGH
LNR_Y15
LNR_Y14
LNR_Y2
LNR_Y1
CLAMPLOW
0%
LNR_Y0
x
DP
x
x
x
x
x
( 360 – W ) /2
W = range from 65.5° up to 360°
( 360 – W ) /2
360 - W
DP + 360
Figure 6 - Input range from 65.5° up to 360°
All the Y-coordinates can be programmed from -50% up to +150% to allow clamping in the middle of one
segment (like on the figure), but the output value is limited to CLAMPLOW and CLAMPHIGH values.
Between two consecutive points, the output characteristic is interpolated.
The parameter W determines the input range on which the 17 points (16 segments) are uniformly spread:
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W
Range
x
0 (0000b)
360.0deg
1

W
Range
x
22.5deg
8
180.0deg
11.3deg
320.0deg
20.0deg
9
144.0deg
9.0deg
2
288.0deg
18.0deg
10
120.0deg
7.5deg
3
261.8deg
16.4deg
11
102.9deg
6.4deg
4
240.0deg
15.0deg
12
90.0deg
5.6deg
5
221.5deg
13.8deg
13
80.0deg
5.0deg
6
205.7deg
12.9deg
14
72.0deg
4.5deg
7
192.0deg
12.0deg
15
(1111b)
65.5deg
4.1deg
Outside of the selected range, the output will remain in clamping levels.
14.1.4. CLAMPING Parameters
The clamping levels are two independent values to limit the output voltage range. The CLAMPLOW
parameter adjusts the minimum output code. The CLAMPHIGH parameter sets the maximum output
code. Both parameters have 16 bits of adjustment and are available for both LNR modes.
14.2. Identification
Parameter
Value
0  65535
0  65535
0  65535
0  65535
0  65535
0  65535
MELEXISID1
MELEXISID2
MELEXISID3
CUSTOMERID1
CUSTOMERID2
CUSTOMERID3
Identification number: 48 bits (3 words) freely useable by Customer for traceability purpose.
14.3. Sensor Front-End
MLX90366
Rev. 1.0
Parameter
Value
MAPXYZ
0 .. 3
SMISM
0 .. 32768
K
0 .. 32768
SEL_k
0 or 1
GAINMIN
GAINMAX
GAINSATURATION
0  41
0  41
0.. 1
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14.3.1. MAPXYZ
The MAPXYZ parameter defines which fields are used to calculate the angle. The different possibilities
are described in the tables below.
This 2 bit value selects the first (B1) and second (B2) field components according the table below.
MAPXYZ
0 – 00b
1 – 01b
2 – 10b
3 – 11b
B1
X
Zx
Y
Y
B2
Y
X
Zx
Zy
Angular
XY mode
XZx mode
YZx mode
YZy mode
MAPXYZ = 3 is not recommended.
14.3.2. SMISM, k and SEL_k Parameters
(i) SMISM
When the mapping (B1=X, B2=Y) is selected, SMSIM defines the sensitivity mismatch factor that is
applied on B1, B2; When another B1, B2 mapping is selected, this parameter is “don’t care”.
This parameter is trimmed at factory; Melexis strongly recommends TO NOT over write it for optimal
performance.
(ii) k
When the mapping (B1=X, B2=Y) is NOT selected, k defines the sensitivity mismatch factor that is applied
on B1or B2 (according to parameter SEL_k – see below). When the mapping (B1=X, B2=Y) is selected,
this parameter is “don’t care”.
This parameter is trimmed at factory for mapping (B1=Z, B2=X). Melexis recommends to fine trim it when
a smaller linearity error (Le) is required and a different mapping than (B1=X, B2=Y) is selected.
(iii) SEL_k
When the mapping (B1=X, B2=Y) is NOT selected, SEL_k defines the component on which the sensitivity
mismatch factor k (see above): SEL_k = 0 means B1 k  B1 and SEL_k = 1 means B2  k  B2.
14.3.3. GAINMIN and GAINMAX Parameters
GAINMIN and GAINMAX define the thresholds on the gain code outside which the fault “GAIN out of
Spec.” is set;
If GAINSATURATION is set, then the virtual gain code is saturated at GAINMIN and GAINMAX, and no
Diagnostic fault is set since the saturations apply before the Diagnostic check.
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Rev. 1.0
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14.4. Filter
Parameter
Value
FILTER
0, 1
The MLX90366 features a filter that is enabled when FILTER = 1.
The filter is of type “moving average”. It averages the two most recent internal angle values.
When the filter is enabled, the SENT data holds the average of the two most recent internal angles.
We recommend to enable the filter, in order to benefit from a noise reduction of 30% compared to the
case FILTER = 0. Given that two angle values are computed per each SENT frame, the latency increases
in this case only marginally.
Filter = 0 corresponds to no filtering, and may be selected to optimize the latency (by about 10%),
whenever the latter is system-critical (e.g. stability of a close-loop system).
14.5. Diagnostic Features
Refer to Application_note_Diagnostic_Behavior_90366 for EE_CRC_Enable function description and for
Diagnostic features which can be enabled at user.
14.6. EEPROM endurance
Although the EEPROM is used for Calibration Data Storage (similarly to an OTPROM), the MLX90366
embedded EEPROM is qualified to guarantee an endurance of minimum 1000 write cycles at 125˚C for
engineering/calibration purpose.
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15.
MLX90366 Self Diagnostic
The MLX90366 provides numerous self-diagnostic features. Those features increase potentially the
functional safety of safety-related systems as it reduces the risk of erroneous angle reporting in case of
internal or external failure modes (“fail-safe”).
Diagnostic Item
ST-up phase Diagnostics
RAM March C- 10N Test
Watchdog BIST
Under Voltage Monitoring
SUPPLYMONI =
(MT3VB) OR (MT4VB)
Over Voltage Monitoring
MT7V
BG Loop Diag.
ROM 16bit checksum
( continuous )
EEPROM 8 bit CRC Check
(continuous)
Watchdog
( continuous )
DSP Loop Diag.
ADC Clipping
ADCCLIP
Virtual Gain Code Out-of-spec
GAINOOS
Virtual Gain Code Saturation
[GAINMIN..GAINMAX]
ADC Monitor (Analog to Digital
Converter)
ADCMONI
Under Voltage Monitoring
SUPPLYMONI =
(MT3VB) OR (MT4VB)
Over Voltage Monitoring
MT7V
Temperature Sensor Monitor
TEMPMONI
Action
Effect on Output
Type
Monitoring Rate
Reporting Rate
Fail-safe mode **
** CPU reset after 120ms
Fail-safe mode **
** CPU reset after 120ms
St-up on Hold
Diagnostic low/ high
Reporting (optional)
Diagnostic low/ high
Reporting (optional)
Diagnostic low/high
Digi HW
n/applicable
(start-up only)
n/applicable
(start-up only)
n/applicable
(start-up only)
n/applicable (start-up
only)
n/applicable (start-up
only)
n/applicable (start-up
only)
PTC entry
OUT in HiZ
Environ
n/applicable
(start-up only)
n/applicable (start-up
only)
Fail-safe mode **
** CPU reset after 120ms
Fail-safe mode **
** CPU reset after 120ms
CPU reset
Diagnostic low//high
Reporting (optional)
Diagnostic low/high
Reporting (optional)
--
Digi HW
800ms
800ms
Digi HW
10ms
10ms
Digi HW
120ms
n/a
Debouncing (prog.)
SENT Status bit0 = 1
(optional)
SENT Status bit0 = 1
(optional)
Environ
&Analog
Environ
&Analog
5/DSP
6ms x
INT (THRES/STEP_UP)
6ms x
INT (THRES/STEP_UP)
Debouncing (prog.)
Environ
&Analog
1/DSP
Saturation (optional)
Gain Saturated @ GAINMINGAINMAX
Debouncing (prog.)
SENT Status bit0 = 1
(optional)
Analog
HW
1/DSP
6ms x
INT (THRES/STEP_UP)
Supply Debouncing (prog.)
SENT Status bit0 = 1
(optional)
Environ
&Analog
1/DSP
6ms x
INT (THRES/STEP_UP)
PTC entry after PTC
Debouncing
OUT in HiZ
Environ
2ms
2ms
Debouncing (prog.)
SENT Status bit0 = 1
(optional)
No effect
Analog
1/DSP
6ms x
INT (THRES/STEP_UP)
n/applicable
Not a diagnostic
Saturate value used for the
Temperature > 170degC ( 20)
compensation to -40degC and
Temperature < -60degC ( 20)
+150degC resp.
Hardware Diag. ( continuously checked by dedicated Logic )
Read/Write Access out of
Fail-safe mode **
Diagnostic Low/High
physical memory
** CPU reset after 120ms
Write Access to protected area
Fail-safe mode **
Diagnostic low/high
(IO and RAM Words)
** CPU reset after 120ms
Fail-safe mode **
Diagnostic low/high
Unauthorized Mode Entry
** CPU reset after 120ms
EEPROM Error Correcting
(Transparent) Error Correction
no effect
Code ( Hamming correction )
Hardware Diag. ( continuously checked by dedicated Analog circuits )
CPU Reset
Pull down load => Diag. Low
Broken VSS
on recovery
Pull up load => Diag. High
CPU Reset
Pull down load => Diag. Low
Broken VDD
on recovery
Pull up load => Diag. High
St-up on Hold
Diagnostic low/high
Resistive Cable Test
MLX90366
Rev. 1.0
Digi HW
Page 26 of 34
Environ
n/applicable
&Analog Not a diagnostic
Environ
&Analog
Digi HW
n/applicable
Not a diagnostic
n/a
immediate Diag
Digi HW
n/a
immediate Diag.
Digi HW
n/a
immediate Diag
Digi HW
n/a.
n/a
immediate Diag
n/a
immediate Diag.
n/a
immediate Diag
n/a
Environ
n/a
immediate Diag.
n/a
immediate Diag
n/a
immediate Diag.
n/a
immediate Diag
n/a
immediate Diag.
n/a
immediate Diag.
Environ
Environ
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25/Jun/13
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MLX90366
Triaxis Position Sensor Assembly feat. SENT
16.
Built-in Capacitors
VDD
C1
C2
VSS
C4
C3
OUT
C1 = C2 = C3 = C4 = 100 nF
Either Vss pin can be used for grounding, but always leave 1 floating.
Built-in capacitors are ceramic multilayer type X8R. The capacitors are specifically suited for high
temperature applications with stable capacitance value (± 15%) up to 150 DegC.
The capacitors are assembled using a gluing method instead of soldering to be more reliable towards
thermal/mechanical stress. The maximum rated voltage is 25V. C1=C2=C4 = 100nF and C3 = 10nF.
17. Standard information regarding manufacturability of Melexis
products with different lead pre-forming and soldering/welding
processes
For Dual Mold Package, please refer to the following document (available upon request):
Application Note Hall Sensors in Dual Mold Packages – (Doc#: 390110000001)
For more information on the lead free topic please see quality page at our website:
http://www.melexis.com/quality.aspx
18.
ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
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19.
Package Information
19.1. DMP-4 – Package Outline Dimensions (POD) – Straight Leads
MLX90366LVS-xxx-200
MLX90366
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19.2. DMP-4 – Package Outline Dimensions (POD) – Trimmed & Formed Leads [1]
MLX90366LVS-xxx-201
MLX90366
Rev. 1.0
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19.3. DMP-4 – Package Outline Dimensions (POD) – Trimmed & Formed Leads [2]
MLX90366LVS-xxx-203
MLX90366
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19.4. DMP-4 - Marking
366ADS2
Mxxxxx
XyXz
yyww
Line 1: MLX project code (e.g. 366ADS2 for
MLX90366LVS-ADS-2xx)
Line 2: Lotnumber
Line 3: Last 4 characters assembly lotnumber
Line 4: 2 digit year code – 2 digit week code
3x 100nF
1x 10nF
Pin 4
Pin 1
MLX90366
Rev. 1.0
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19.5. DMP-4 - Sensitive Spot Positioning & Sense direction
CW
By
4
3
Bx
2
Yc
1
Xc
Bx
Bz
Zc
MLX90366
Rev. 1.0
Magnetic center position
MLX90366LVS-xxx-2xx
Xc
0.23
Yc
3.67
Zc
0.495
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MLX90366 – Reference Angle
The MLX90366 is an absolute angular position sensor but the linearity error (See section 9) does not
include the error linked to the absolute reference 0 Deg (which can be fixed in the application through the
discontinuity point).
MLX90366
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20.
Disclaimer
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in
its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the
information set forth herein or regarding the freedom of the described devices from patent infringement.
Melexis reserves the right to change specifications and prices at any time and without notice. Therefore,
prior to designing this product into a system, it is necessary to check with Melexis for current information.
This product is intended for use in normal commercial applications. Applications requiring extended
temperature range, unusual environmental requirements, or high reliability applications, such as military,
medical life-support or life-sustaining equipment are specifically not recommended without additional
processing by Melexis for each application.
The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not
be liable to recipient or any third party for any damages, including but not limited to personal injury,
property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or
consequential damages, of any kind, in connection with or arising out of the furnishing, performance or
use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow
out of Melexis’ rendering of technical or other services.
© 2013 Melexis N.V. All rights reserved.
For the latest version of this document, go to our website at
www.melexis.com
Or for additional information contact Melexis Direct:
Europe, Africa, Asia:
America:
Phone: +32 1367 0495
E-mail: [email protected]
Phone: +1 248 306 5400
E-mail: [email protected]
ISO/TS 16949 and ISO14001 Certified
MLX90366
Rev. 1.0
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