MLX90333KDCBCT-000TU [MELEXIS]
Triaxis® Position Sensor;
| 型号： | MLX90333KDCBCT-000TU |
| 厂家： | 
Melexis Microelectronic Systems |
| 描述： | Triaxis® Position Sensor |
| 文件： | 总48页 (文件大小：1079K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MLX90333
Triaxis® Position Sensor
Features and Benefits
ꢀ Absolute 3D Position Sensor
ꢀ Simple & Robust Magnetic Design
ꢀ Tria⊗is® Hall Technology
ꢀ Programmable Linear Transfer Characteristics (Alpha, Beta)
ꢀ Selectable Analog (Ratiometric), PWM, Serial Protocol
ꢀ 12 bit Angular Resolution - 10 bit Angular Thermal Accuracy
ꢀ 40 bit ID Number
ꢀ Single Die – SO8 Package RoHS Compliant
ꢀ Dual Die (Full Redundant) – TSSOP16 Package RoHS Compliant
Applications
ꢀ 3D Position Sensor
ꢀ Joystick
ꢀ 4-Way Scroll Key
ꢀ Joypad
ꢀ Man Machine Interface Device
ꢀ Linear Position Sensor
Ordering Code
Product Code Temperature Code
Package Code
DC
DC
Option Code
BCH-000
BCH-000
BCH-000
BCH-000
BCH-100
BCH-100
BCT-000
BCT-000
BCH-000
BCH-100
BCH-100
BCT-000
BCT-000
BCH-000
BCH-000
BCT-000
BCT-000
BCH-100
BCH-100
BCH-000
BCH-000
BCH-000
BCH-000
BCH-100
BCH-100
BCT-000
BCT-000
BCH-000
BCH-000
Packing Form Code
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
S
S
E
E
E
E
E
E
K
K
K
K
K
L
L
L
L
L
L
L
L
RE
TU
RE
TU
RE
TU
RE
TU
RE
TU
RE
RE
TU
RE
TU
RE
TU
RE
TU
TU
RE
RE
TU
RE
TU
RE
TU
RE
TU
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
GO
GO
GO
GO
GO
GO
GO
GO
GO
GO
E
E
E
E
E
E
K
K
3901090333
Rev. 007
Page 1 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
MLX90333
K
K
K
K
L
L
L
L
GO
GO
GO
GO
GO
GO
GO
GO
BCH-100
RE
TU
RE
TU
TU
RE
RE
TU
BCH-100
BCT-000
BCT-000
BCH-100
BCH-100
BCT-000
BCT-000
Legend:
Temperature Code:
L for Temperature Range -40°C to 150°C
K for Temperature Range -40°C to 125°C
S for Temperature Range -20°C to 85°C
E for Temperature Range -40°C to 85°C
GO for TSSOP16
Package Code:
Option Code:
DC for SOIC8
AAA-xxx: Die version
xxx-000: Standard version
xxx-100: SPI version
RE for Reel, TU for Tube
Packing Form:
Ordering example:
MLX90333LGO-BCH-000-TU
3901090333
Rev. 007
Page 2 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
1.
Functional Diagram
Rev.Pol.
&
OverVolt.
3V3
Reg
V
DD
SS
V
DSP
D
xꢀ1
Triaꢀis™
A
V
V
X
Y
O
UTꢀ1
A
G
(Analog/PWM)
µC
D
V
Z
RAM
xꢀ1
EEP
ROM
O
UTꢀ2
(Analog/PWM)
Figure 1 - Block Diagram (Analog & PWM)
3V3
Reg
Rev.Pol.
VDD
DSP
Triaꢀis™
VX
A
/SS
V
Y
G
µC
D
VZ
SERIALꢀPROTOCOL
SCLK
MOSI/MISO
RAM
EEP
ROM
VSS
Figure 2 - Block Diagram (Serial Protocol)
3901090333
Rev. 007
Page 3 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
1. Description
The MLX90333 is a monolithic 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 (as an additional back-end
step).
The MLX90333 is sensitive to the 3 components of the flux density applied to the IC (BX, BY and BZ). This
allows the MLX90333 to sense any magnet moving in its surrounding and it enables the design of novel
generation of non-contacting joystick position sensors which are often required for both automotive and
industrial applications (e.g. man-machine interface).
Furthermore, the capability of measuring BX, BY and BZ allows the MLX90333 to be considered as
universal non-contacting position sensor i.e. not limited to joystick applications. For instance, a linear
travel can be sensed with the MLX90333 once included in a specific magnetic design.
In combination with the appropriate signal processing, the magnetic flux density of a small magnet (axial
magnetization) moving above the IC can be measured in a non-contacting way (Figure 3). The two (2)
angular information are computed from the three (3) vector components of the flux density (i.e. BX, BY and
). MLX90333 reports two (2) linear output signals. The output formats are selectable between Analog,
PWM and Serial Protocol.
BZ
Figure 3 - Typical application of MLX90333
Page 4 of 48
3901090333
Rev. 007
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
TABLE of CONTENTS
FEATURES AND BENEFITS ....................................................................................................................... 1
APPLICATIONS............................................................................................................................................ 1
ORDERING CODE........................................................................................................................................ 1
1. DESCRIPTION....................................................................................................................................... 4
2. GLOSSARY OF TERMS − ABBREVIATIONS − ACRONYMS ............................................................ 7
3. PINOUT.................................................................................................................................................. 7
4. ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 8
5. DETAILED DESCRIPTION.................................................................................................................... 8
6. MLX90333 ELECTRICAL SPECIFICATION....................................................................................... 14
7. MLX90333 ISOLATION SPECIFICATION.......................................................................................... 16
8. MLX90333 TIMING SPECIFICATION................................................................................................. 16
9. MLX90333 ACCURACY SPECIFICATION......................................................................................... 17
10. MLX90333 MAGNETIC SPECIFICATION .......................................................................................... 18
11. MLX90333 CPU & MEMORY SPECIFICATION ................................................................................. 18
12. MLX90333 END-USER PROGRAMMABLE ITEMS........................................................................... 19
13. DESCRIPTION OF END-USER PROGRAMMABLE ITEMS.............................................................. 21
13.1.
13.2.
O
UTPUT
UTPUT
C
ONFIGURATION .........................................................................................................................21
O
M
ODE..........................................................................................................................................21
13.2.1. Analog Output Mode ............................................................................................................................21
13.2.2. PWM Output Mode...............................................................................................................................21
13.2.3. Serial Protocol Output Mode ...............................................................................................................22
13.2.4. Switch Out ............................................................................................................................................22
13.3.
OUTPUT TRANSFER CHARACTERISTIC.......................................................................................................22
13.3.1. The Polarity and Modulo Parameters..................................................................................................23
13.3.2. Alpha/Beta Discontinuity Point (or Zero Degree Point)......................................................................24
13.3.3. LNR Parameters...................................................................................................................................24
13.3.4. CLAMPING Parameters ......................................................................................................................25
13.3.5. DEADZONE Parameter.......................................................................................................................25
13.4.
13.5.
I
DENTIFICATION ........................................................................................................................................26
S
ENSOR FRONT-END .................................................................................................................................26
13.5.1. HIGHSPEED Parameter......................................................................................................................26
13.5.2. GAINMIN and GAINMAX Parameters ................................................................................................27
13.5.3. FIELDTHRES_LOW and FIELDTHRES_HIGH Parameters..............................................................27
13.6.
FILTER ....................................................................................................................................................28
13.6.1. Hysteresis Filter ...................................................................................................................................28
13.6.2. FIR Filters............................................................................................................................................28
13.6.3. IIR Filters .............................................................................................................................................29
13.7.
13.7.1. Enhanced “Joystick “Angle Formula...................................................................................................31
13.8. ETTINGS .................................................................................................31
PROGRAMMABLE ENHANCED “JOYSTICK’ ANGLE CORRECTION.................................................................30
P
ROGRAMMABLE DIAGNOSTIC S
13.8.1. OUTxDIAG Parameter.........................................................................................................................31
13.8.2. RESONFAULT Parameter ...................................................................................................................31
13.8.3. EEHAMHOLE Parameter....................................................................................................................32
13.9. LOCK.........................................................................................................................................................32
13.9.1. MLXLOCK Parameter .........................................................................................................................32
3901090333
Rev. 007
Page 5 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
13.9.2. LOCK Parameter .................................................................................................................................32
14. MLX90333 SELF DIAGNOSTIC.......................................................................................................... 33
15. SERIAL PROTOCOL........................................................................................................................... 35
15.1.
15.2.
15.3.
15.4.
15.5.
15.6.
15.7.
15.8.
15.9.
15.10.
I
NTRODUCTION .........................................................................................................................................35
SERIAL PROTOCOL MODE ...................................................................................................................35
O
MOSI (MASTER
MISO (MASTER
UT LAVE )...............................................................................................................35
S
I
LAVE OUT)...............................................................................................................35
N
I
N
S
SS (SLAVE
ASTER TART-U
LAVE TART-U
S
ELECT) ..................................................................................................................................35
...................................................................................................................................35
......................................................................................................................................35
IMING......................................................................................................................................................36
ESET............................................................................................................................................37
AYER ..........................................................................................................................................37
M
S
P
S
T
S
P
S
LAVE
RAME
R
F
L
15.10.1.
Frame Type Selection.......................................................................................................................37
Data Frame Structure ......................................................................................................................37
Timing...............................................................................................................................................37
Data Structure..................................................................................................................................38
Angle Calculation.............................................................................................................................38
Error Handling.................................................................................................................................38
15.10.2.
15.10.3.
15.10.4.
15.10.5.
15.10.6.
16. RECOMMENDED APPLICATION DIAGRAMS.................................................................................. 39
16.1.
16.2.
16.3.
16.4.
A
NALOG
O
UTPUT
IDE
UTPUT
W
IRING WITH THE MLX90333 IN SOIC PACKAGE.......................................................39
IRING ............................................................................................................39
IRING WITH THE MLX90333 IN TSSOP PACKAGE....................................................40
ROTOCOL ....................................................................................................................................40
PWM LOW
S
OUTPUT W
ANALOG
O
W
SERIAL
P
17. STANDARD INFORMATION REGARDING MANUFACTURABILITY OF MELEXIS PRODUCTS
WITH DIFFERENT SOLDERING PROCESSES........................................................................................ 42
18. ESD PRECAUTIONS........................................................................................................................... 42
19. PACKAGE INFORMATION................................................................................................................. 43
19.1.
19.2.
19.3.
19.4.
19.5.
19.6.
SOIC8 - PACKAGE
SOIC8 - PINOUT AND
SOIC8 - IMC POSITIONNING.....................................................................................................................44
TSSOP16 - PACKAGE IMENSIONS ..........................................................................................................45
TSSOP16 - PINOUT AND ARKING ..........................................................................................................46
TSSOP16 - IMC POSITIONNING................................................................................................................47
D
IMENSIONS ...............................................................................................................43
MARKING ...............................................................................................................43
D
M
20. DISCLAIMER....................................................................................................................................... 48
3901090333
Rev. 007
Page 6 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
2. 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
PWM: Pulse Width Modulation
%DC: Duty Cycle of the output signal i.e. TON /(TON + TOFF)
ADC: Analog-to-Digital Converter
DAC: Digital-to-Analog 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
ATAN: trigonometric function: arctangent (or inverse tangent)
IMC: Integrated Magneto-Concentrator (IMC)
CoRDiC: Coordinate Rotation Digital Computer (i.e. iterative rectangular-to-polar transform)
EMC: Electro-Magnetic Compatibility
3. Pinout1
SOICꢁ8ꢀ
TSSOPꢁ16ꢀ
Analogꢀ/ꢀPWMꢀ SerialꢀProtocolꢀ
Pinꢀ#ꢀ
Analogꢀ/ꢀPWMꢀ
SerialꢀProtocolꢀ
1ꢀ
V
DDꢀ
V
DDꢀ
V
DIG1ꢀ
VDIG1ꢀ
2ꢀ
Testꢀ0ꢀ
NotꢀUsedꢀ
Outꢀ2ꢀ
Testꢀ0ꢀ
/SSꢀ
V
SS1ꢀ(Ground1)ꢀ
DD1ꢀ
V
SS1ꢀ(Ground1)ꢀ
DD1ꢀ
3ꢀ
V
V
4ꢀ
SCLKꢀ
Testꢀ01ꢀ
NotꢀUsedꢀ
Outꢀ22ꢀ
Testꢀ01ꢀ
/SS2ꢀ
5ꢀ
Outꢀ1ꢀ
MOSIꢀ/ꢀMISOꢀ
Testꢀ1ꢀ
6ꢀ
Testꢀ1ꢀ
SCLK2ꢀ
7ꢀ
V
DIG
ꢀ
V
DIG
ꢀ
Outꢀ12ꢀ
MOSI2ꢀ/ꢀMISO2ꢀ
Testꢀ12ꢀ
8ꢀ
V
SSꢀ(Ground)ꢀ
V
SSꢀ(Ground)ꢀ
Testꢀ12ꢀ
9ꢀ
ꢀ
V
DIG2ꢀ
VDIG2ꢀ
10ꢀ
V
SS2ꢀ(Ground2)ꢀ
DD2ꢀ
V
SS2ꢀ(Ground2)ꢀ
DD2ꢀ
11ꢀ
V
V
12ꢀ
Testꢀ02ꢀ
NotꢀUsedꢀ
Outꢀ21ꢀ
Testꢀ02ꢀ
/SS1ꢀ
13ꢀ
14ꢀ
SCLK1ꢀ
15ꢀ
Outꢀ11ꢀ
MOSI1ꢀ/ꢀMISO1ꢀ
Testꢀ11ꢀ
16ꢀ
Testꢀ11ꢀ
ꢀ
For optimal EMC behavior, it is recommended to connect the unused pins (NotꢀUsed and Test) to the Ground (see section 15)
1 SeeꢀSectionꢀ13.1ꢀforꢀtheꢀOutꢀ1ꢀandꢀOutꢀ2ꢀconfiguration
3901090333
Rev. 007
Page 7 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
4. Absolute Maximum Ratings
Parameter
SupplyꢀVoltage,ꢀVDDꢀ(overvoltage)ꢀ
ReverseꢀVoltageꢀProtectionꢀ
Value
+ꢀ20ꢀVꢀ
−ꢀ10ꢀVꢀ
+ꢀ10ꢀVꢀ
PositiveꢀOutputꢀVoltageꢀꢀ
(AnalogꢀorꢀPWM)ꢀ
+ꢀ14ꢀVꢀ(200ꢀsꢀmaxꢀ−ꢀTAꢀ=ꢀ+ꢀ25°C)ꢀꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
OutputꢀCurrentꢀ(IOUT)ꢀ
ꢀ30ꢀmAꢀ
ReverseꢀOutputꢀVoltageꢀ
−ꢀ0.3ꢀVꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
ꢀ
ReverseꢀOutputꢀCurrentꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
−ꢀ50ꢀmAꢀ
OperatingꢀAmbientꢀTemperatureꢀRange,ꢀTAꢀ
StorageꢀTemperatureꢀRange,ꢀTSꢀ
MagneticꢀFluxꢀDensityꢀ
−ꢀ40°Cꢀ…ꢀ+ꢀ150°Cꢀ
−ꢀ40°Cꢀ…ꢀ+ꢀ150°Cꢀ
ꢀ4ꢀTꢀ
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute-
maximum-rated conditions for extended periods may affect device reliability.
5. Detailed Description
As described on the block diagram (Figure 1 and Figure 2), the magnetic flux density applied to the IC is
sensed through the Tria⊗is® sensor front-end. This front-end consists into two orthogonal pairs (for each
of the two directions parallel with the IC surface i.e. X and Y) of conventional planar Hall plates (sensitive
element – blue area on Figure 4) and an Integrated Magneto-Concentrator (IMC yellow disk on Figure
4).
Bz
Bz
Bz
Bz
Figure 4 - Tria⊗is® sensor front-end (4 Hall plates + IMC disk)
Two orthogonal components (respectively BX⊥ and BY⊥) proportional to the parallel components
(respectively BX// and BY//) are induced through the IMC and can be measured by both respective pairs of
conventional planar Hall plates as those are sensitive to the flux density applied orthogonally to them and
the IC surface. The third component BZ is also sensed by those four (4) conventional Hall plates as shown
above.
3901090333
Rev. 007
Page 8 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
In summary, along X-axis, the left Hall plate measures “BX⊥ - BZ” while the right Hall plate measures “-BX⊥
- BZ”. Similarly, along the Y-axis, the left Hall plate measures “BY⊥ - BZ” while the right Hall plate measures
“-BY⊥ - BZ”.
Through an appropriate signal processing, the Tria⊗is® sensor front-end reports the three (3)
components of the applied magnetic flux density B i.e. BX, BY and BZ.
Indeed, by subtracting the signals from the two (2) Hall plates in each pair, the components BX⊥ and BY⊥
are measured while BZ is cancelled. To the contrary, by adding the signals from the two (2) Hall plates in
each pair, the component BZ is measured while BX⊥ and BY⊥ are cancelled
In a joystick based on a “gimbal” mechanism as shown on Figure 3 (left), the magnet (axial magnetization)
moves on a hemisphere centered at the IC. The flux density is described through the following
relationships:
BX = COS(
BY = SIN(
BZ = SIN(
α
) ⋅ SIN(
β
)
α
) ⋅COS(
) ⋅ SIN(
β
)
α
β
)
Those components are plotted on the Figure 5, Figure 6 and Figure 7.
Figure 5 – Magnetic Flux Density – BX, BY, BZ
3901090333
Rev. 007
Page 9 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
400
300
200
100
0
ꢁ100
ꢁ200
ꢁ300
ꢁ400
0
45
90
Alphaꢀ(Deg)
BY
135
180
BX
BZ
Figure 6 – Magnetic Flux Density – β = 90 Deg – BX ∝ cos(α), BY = 0 & BZ ∝ sin(α)
400
300
200
100
0
ꢁ100
ꢁ200
ꢁ300
ꢁ400
0
45
90
135
180
Betaꢀ(Deg)
BX
BY
BZ
Figure 7 – Magnetic Flux Density – α = 0 Deg – BX = 0, BY ∝ cos(β) & BZ ∝ sin(β)
Three (3) differential voltages corresponding to the three (3) components of the applied flux density are
provided to the ADC (Analog-to-Digital Converter – Figure 8 and Figure 9). The Hall signals are
processed through a fully differential analog chain featuring the classic offset cancellation technique (Hall
plate quadrature spinning and chopper-stabilized amplifier).
The amplitude of VZ is smaller than the other two (2) components VX and VY due to fact that the magnetic
gain of the IMC only affects the components parallel to the IC surface.
3901090333
Rev. 007
Page 10 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
2000
1500
1000
500
0
ꢁ500
ꢁ1000
ꢁ1500
ꢁ2000
0
45
90
Alphaꢀ(Deg)
VY
135
180
VX
VZ
Figure 8 – ADC Input Signals – β = 90 Deg – VX ∝ BX ∝ cos(α), VY = BY = 0 & VZ ∝ BZ ∝ sin(α)
2000
1500
1000
500
0
ꢁ500
ꢁ1000
ꢁ1500
ꢁ2000
0
45
90
Betaꢀ(Deg)
VY
135
180
VX
VZ
Figure 9 – ADC Input Signals – α = 90 Deg – VX = BX = 0, VY ∝ BY ∝ cos(β) & VZ ∝ BZ ∝ sin(β)
3901090333
Rev. 007
Page 11 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
The conditioned analog signals are converted through an ADC (configurable − 14 or 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 two (2) angular information from the three (3) raw signals (after so-
called front-end compensation steps) through the following operations:
kZVZ
VX
α
β
= ATAN
= ATAN
kZVZ
VY
where kZ is a programmable parameter. First of all, kZ is used to compensate the smaller amplitude of VZ
vs. VX & VY. On the other hand, kZ allows also a targeted reduction of the linearity error through a
normalization of the raw signals prior to performing the “ATAN” function.
In a joystick based on a “ball & socket” joint as shown on Figure 3 (right), the magnet (axial
magnetization) moves on a hemisphere centered at the pivot point. The flux density is described through
slightly more complex equations but the MLX90333 offers an alternate algorithm to extract both angular
informations:
(kZVZ )2 + (ktVY )2
α
β
= ATAN
= ATAN
VX
(kZVZ )2 + (ktVX )2
VY
where kZ and kt are programmable parameters.
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 ″ATAN″ function, the F/W controls the whole
analog chain, the output transfer characteristic, the output protocol, the programming/calibration and also
the self-diagnostic modes.
In the MLX90333, the ″ATAN″ function is computed via a look-up table (i.e. it is not obtained through a
CoRDiC algorithm).
Due to the fact that the ″ATAN″ operation is performed on the ratios ″VZ/VX″ and ″VZ/VY″, the angular
information are intrinsically self-compensated vs. flux density variations (due to airgap change, thermal or
ageing effects) affecting the magnetic signal. This feature allows therefore an improved thermal accuracy
vs. joystick based on conventional linear Hall sensors.
Once the angular information is computed (over 360 degrees), it is further conditioned (mapped) vs. the
target transfer characteristic and it is provided at the output(s) as:
•
•
•
an analog output level through a 12 bit DAC followed by a buffer
a digital PWM signal with 12 bit depth (programmable frequency 100 Hz … 1 kHz)
a digital Serial Protocol (SP − 16 bits computed angular information available)
3901090333
Rev. 007
Page 12 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
For instance, the analog output can be programmed for offset, gain and clamping to meet any rotary
position sensor output transfer characteristic:
Vout(α) = ClampLo
Vout(α) = Voffset + Gain × α
Vout(α) = ClampHi
for α ≤ αmin
for αmin ≤ α ≤ αmax
for α ≥ αmax
Vout(β) = ClampLo
Vout(β) = Voffset + Gain × β
Vout(β) = ClampHi
for β ≤ βmin
for βmin ≤ β ≤ βmax
for β ≥ βmax
where Voffset, Gain, ClampLo and ClampHi are the main adjustable parameters for the end-user.
The linear part of the transfer curve can be adjusted through a 3 point calibration. Once only one output is
used, a 5 point calibration is also available for further improvement of the linearity.
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 MLX90333 is handled at both engineering lab and
production line levels by the Melexis Programming Unit PTC-04 with the MLX90316 daughterboard and
dedicated software tools (DLL − User Interface).
3901090333
Rev. 007
Page 13 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
6. MLX90333 Electrical Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (K or L).
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
NominalꢀSupplyꢀVoltageꢀ
V
DD
ꢀ
ꢀ
4.5ꢀ
ꢀ
5ꢀ
5.5ꢀ
Vꢀ
Slowꢀmode(3)ꢀ
Fastꢀmode(3)ꢀ
8.5ꢀ
13.5ꢀ
11ꢀ
16ꢀ
mAꢀ
mAꢀ
SupplyꢀCurrent(2)ꢀ
Iddꢀ
PORꢀLevelꢀ
V
DDꢀPORꢀ SupplyꢀUnderꢀVoltageꢀ
2ꢀ
2.7ꢀ
ꢀ
3ꢀ
Vꢀ
OutputꢀCurrentꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
AnalogꢀOutputꢀmodeꢀ
Ioutꢀ
ꢁ8ꢀ
ꢁ20ꢀ
8ꢀ
20ꢀ
mAꢀ
mAꢀ
ꢀ
PWMꢀOutputꢀmodeꢀ
Voutꢀ=ꢀ0ꢀVꢀ
Voutꢀ=ꢀ5ꢀVꢀ
Voutꢀ=ꢀ14ꢀVꢀ(TAꢀ=ꢀ25°C)ꢀ
ꢀ
12ꢀ
12ꢀ
24ꢀ
15ꢀ
15ꢀ
45ꢀ
mAꢀ
mAꢀ
mAꢀ
OutputꢀShortꢀCircuitꢀCurrentꢀ
Ishort
ꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
PullꢁdownꢀtoꢀGroundꢀꢀ
Pullꢁupꢀtoꢀ5V(4)ꢀ
1ꢀ
1ꢀ
10ꢀ
10ꢀ
OutputꢀLoadꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
∞(5)ꢀ
∞(5)ꢀꢀ
kΩꢀ
kΩꢀ
RLꢀ
ꢀ
ꢀ
ꢀ
ꢀ
3ꢀ
ꢀ
Vsat_loꢀ
Vsat_hiꢀ
%VDD
ꢀ
PullꢁupꢀloadꢀRLꢀ≥ꢀ10ꢀkꢂꢀ
PullꢁdownꢀloadꢀRLꢀ≥ꢀ5ꢀkꢂ
AnalogꢀSaturationꢀOutputꢀLevelꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
96ꢀ
%VDD
ꢀ
ꢀ
PullꢁupꢀLowꢀSideꢀRLꢀ≥ꢀ10ꢀkꢂꢀ
PushꢁPullꢀ(IOUTꢀ=ꢀꢁ20mA)ꢀ
VsatD_loꢀ
ꢀ
ꢀ
1.5ꢀ
ꢀ
%VDD
%VDD
%VDD
ꢀ
DigitalꢀSaturationꢀOutputꢀLevelꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
VsatD_hiꢀ PushꢁPullꢀ(IOUTꢀ=ꢀ20mA)ꢀ
97ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
1ꢀ
1.5ꢀ
PullꢁdownꢀloadꢀRLꢀ≥ꢀ5ꢀkꢂꢀ
Diag_loꢀ
ꢀ
PullꢁupꢀloadꢀRLꢀ≥ꢀ10ꢀkꢂꢀ
ActiveꢀDiagnosticꢀOutputꢀLevelꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
96ꢀ
98ꢀ
ꢀ
ꢀ
PullꢁdownꢀloadꢀRLꢀ≥ꢀ5ꢀkꢂꢀ
Diag_hiꢀ
%VDD
ꢀ
PullꢁupꢀloadꢀRLꢀ≥ꢀ5ꢀkꢂꢀ
BrokenꢀVSS&ꢀ
BVSSPDꢀ
ꢀ
99ꢀ
ꢀ
ꢀ
4(6)ꢀ
ꢀ
%VDDꢀ
PullꢁdownꢀloadꢀRLꢀ≤ꢀ10ꢀkꢂꢀ
BrokenꢀVSS(6)ꢀ&ꢀ
BVSSPUꢀ
100ꢀ
0ꢀ
%VDDꢀ
PassiveꢀDiagnosticꢀOutputꢀLevelꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
PullꢁupꢀloadꢀRLꢀ≥ꢀ1kꢂꢀ
ꢀ
BrokenꢀVDD(6)ꢀ&ꢀ
BVDDPDꢀ
(BrokenꢀTrackꢀDiagnostic)ꢀ(6)ꢀ
1ꢀ
%VDDꢀ
PullꢁdownꢀloadꢀRLꢀ≥ꢀ1kꢂꢀ
BrokenꢀVDDꢀ&ꢀ
BVDDPUꢀ
NoꢀBrokenꢀTrackꢀdiagnosticꢀ
%VDDꢀ
Pullꢁupꢀloadꢀtoꢀ5Vꢀ
Clamp_loꢀ Programmableꢀ
Clamp_hiꢀ Programmableꢀ
0ꢀ
0ꢀ
ꢀ
ꢀ
100ꢀ
100ꢀ
%VDD(7)ꢀ
%VDD(7)ꢀ
ClampedꢀOutputꢀLevelꢀ
BothꢀoutputsꢀOUTꢀ1ꢀ&ꢀOUTꢀ2
ꢀ
2ꢀForꢀtheꢀdualꢀversion,ꢀtheꢀsupplyꢀcurrentꢀisꢀmultipliedꢀbyꢀ2ꢀ
3ꢀSeeꢀsectionꢀ13.5.1ꢀforꢀdetailsꢀconcerningꢀSlowꢀandꢀFastꢀmodeꢀ
4ꢀApplicableꢀforꢀoutputꢀinꢀAnalogꢀandꢀPWMꢀ(OpenꢁDrain)ꢀmodesꢀ
5ꢀRLꢀ<ꢀ∞ꢀforꢀoutputꢀinꢀPWMꢀmodeꢀ
6ꢀForꢀdetailedꢀinformation,ꢀseeꢀalsoꢀsectionꢀ14ꢀ
7ꢀClampingꢀlevelsꢀneedꢀtoꢀbeꢀconsideredꢀvsꢀtheꢀsaturationꢀofꢀtheꢀoutputꢀstageꢀ(seeꢀVsat_loꢀandꢀVsat_hi)ꢀ
3901090333
Rev. 007
Page 14 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
As an illustration of the previous table, the MLX90333 fits the typical classification of the output span
described on the Figure 10.
100ꢀ%
DiagnosticꢀBandꢀ(High)
96ꢀ%
92ꢀ%
88ꢀ%
90ꢀ%
80ꢀ%
70ꢀ%
60ꢀ%
50ꢀ%
40ꢀ%
30ꢀ%
20ꢀ%
10ꢀ%
0ꢀ%
ClampingꢀHigh
LinearꢀRange
12ꢀ%
8ꢀ%
4ꢀ%
ClampingꢀLow
DiagnosticꢀBandꢀ(Low)
Figure 10 - Output Span Classification
3901090333
Rev. 007
Page 15 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
7. MLX90333 Isolation Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (K or L). Only valid for the package code GO i.e. dual die version.
Parameter
Symbol
Test Conditions
Betweenꢀ2ꢀdiesꢀ
Min
Typ
Max
Units
IsolationꢀResistanceꢀ
ꢀ
4ꢀ
ꢀ
ꢀ
Mꢀꢁ
8. MLX90333 Timing Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (K or L).
Parameter
Symbol
Test Conditions
Slowꢁmode(8)ꢁ
Fastꢁmode(8)ꢁ
Min
Typ
Max
Units
MainꢁClockꢁFrequencyꢁ
Ckꢁ
ꢁ
7ꢁ
20ꢁ
ꢁ
MHzꢁ
MHzꢁ
SamplingꢁRateꢁ
CTꢁ
Tsꢁ
Slowꢁmode(8)ꢁ
Fastꢁmode(8)ꢁ
Slowꢁmode(8),ꢁFilter=5(9)ꢁ
Fastꢁmode(8),ꢁFilter=0(9)ꢁ
ꢁ
ꢁ
600ꢁ
200ꢁ
1000ꢁ
330ꢁ
ꢂsꢁ
ꢂsꢁ
StepꢁResponseꢁTimeꢁ
ꢁ
4ꢁ
600ꢁ
msꢁ
ꢂsꢁ
400ꢁ
Watchdogꢁ
Wdꢁ
Tsuꢁ
ꢁ
SeeꢁSectionꢁ14ꢁ
SlowꢁandꢁFastꢁmode(8)ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
5ꢁ
15ꢁ
ꢁ
msꢁ
msꢁ
StartꢃupꢁCycleꢁ
AnalogꢁOutputꢁSlewꢁRateꢁ
COUTꢁ=ꢁ42ꢁnFꢁ
COUTꢁ=ꢁ100ꢁnFꢁ
200ꢁ
100ꢁ
V/msꢁ
PWMꢁFrequencyꢁ
FPWM
ꢁ
ꢁ
PWMꢁOutputꢁEnabledꢁ
100ꢁ
ꢁ
ꢁ
1000ꢁ
ꢁ
Hzꢁ
DigitalꢁOutputꢁRiseꢁTimeꢁ
BothꢁoutputsꢁOUTꢁ1ꢁ&ꢁOUTꢁ2
Modeꢁ5ꢁ–ꢁ10nF,ꢁRLꢁ=ꢁ10ꢁkꢀ ꢁ
Modeꢁ7ꢁ–ꢁ10nF,ꢁRLꢁ=ꢁ10ꢁkꢀ ꢁ
120ꢁ
2.2ꢁ
ꢂsꢁ
ꢂsꢁ
ꢁ
ꢁ
DigitalꢁOutputꢁFallꢁTimeꢁ
BothꢁoutputsꢁOUTꢁ1ꢁ&ꢁOUTꢁ2
ꢁ
ꢁ
Modeꢁ5ꢁ–ꢁ10nF,ꢁRLꢁ=ꢁ10ꢁkꢀ ꢁ
Modeꢁ7ꢁ–ꢁ10nF,ꢁRLꢁ=ꢁ10ꢁkꢀ ꢁ
ꢁ
1.8ꢁ
1.9ꢁ
ꢁ
ꢂsꢁ
ꢂsꢁ
ꢁ
ꢁ
ꢁAGCꢁ90%(11)
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
Slowꢁmode(8)ꢁꢁꢃꢁFieldꢁFreq>ꢁ40Hzꢁ
ꢃ10ꢁ
ꢃ30ꢁ
ꢃ12ꢁ
ꢃ30ꢁ
ꢁ
ꢃ22ꢁ
ꢃ30ꢁ
ꢃ30ꢁ
ꢃ60ꢁ
10ꢁ
30ꢁ
12ꢁ
30ꢁ
ꢁ
22ꢁ
30ꢁ
30ꢁ
60ꢁ
%ꢁ
%ꢁ
%ꢁ
%ꢁ
ꢁ
%ꢁ
%ꢁ
%ꢁ
%ꢁ
MaximumꢁFieldꢁamplitudeꢁ
Change(10)ꢁ(%)ꢁvs.ꢁFieldꢁ
Frequency(Hz)ꢁ
FieldꢁFreq=ꢁ20Hzꢁ
Fastꢁmode(8)ꢁꢃFieldꢁFreq>ꢁ150Hzꢁ
FieldꢁFreq=ꢁ50Hzꢁ
ꢁꢁAGCꢁ64%ꢁ(90333BCTꢁonly)ꢁ
Slowꢁmode(8)ꢁꢃFieldꢁFreq>ꢁ80Hzꢁ
ꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁꢁFieldꢁFreq=50Hzꢁ
Fastꢁmode(8)ꢁꢃꢁFieldꢁFreq>ꢁ250Hzꢁ
FieldꢁFreq=50Hzꢁ
8ꢁSeeꢁsectionꢁ13.5.1ꢁforꢁdetailsꢁconcerningꢁSlowꢁandꢁFastꢁmodeꢁ
9ꢁSeeꢁsectionꢁ13.6ꢁforꢁdetailsꢁconcerningꢁFilterꢁparameterꢁ
10ꢁEx.:ꢁMagneticꢁfieldꢁamplitudeꢁchangeꢁinꢁcaseꢁofꢁvibration.ꢁꢁ
11ꢁAutomaticꢁGainꢁControlꢁ–ꢁseeꢁSectionꢁ13.5.2ꢁforꢁmoreꢁinformation.ꢁ
3901090333
Rev. 007
Page 16 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
9. MLX90333 Accuracy Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (K or L).
Parameter
Symbol
RADC
Test Conditions
Min
Typ
Max
Units
ADCꢁResolutionꢁonꢁtheꢁrawꢁ
signalsꢁX,ꢁYꢁandꢁZꢁ
ꢁ
SlowꢁMode(12)
ꢁ
ꢁ
15ꢁ
14ꢁ
ꢁ
bitsꢁ
bitsꢁ
FastꢁMode(12)ꢁꢁ
OffsetꢁonꢁtheꢁRawꢁSignalsꢁX,ꢁYꢁ X0,ꢁY0,ꢁZ0ꢁ TAꢁ=ꢁ25°Cꢁ
andꢁZꢁ
ꢃ60ꢁ
ꢁ
60ꢁ
LSB15ꢁ
MismatchꢁonꢁtheꢁRawꢁSignalsꢁ
X,ꢁYꢁandꢁZꢁ
ꢁ
TAꢁ=ꢁ25°Cꢁ
ꢁ
ꢁ
ꢁ
1ꢁ
30ꢁ
30ꢁ
ꢁ
SMISMXYꢁ BetweenꢁXꢁandꢁYꢁ
SMISMXZꢁ BetweenꢁXꢁandꢁZ(13)
SMISMYZꢁ BetweenꢁYꢁandꢁZ(13)
ꢃ1ꢁ
ꢃ30ꢁ
ꢃ30ꢁ
%ꢁ
%ꢁ
%ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
TAꢁ=ꢁ25°Cꢁ
ꢁ
ꢁ
ꢁ
ꢁ
MagneticꢁAngleꢁꢁ
Phaseꢁerrorꢁ
ORTHXYꢁ BetweenꢁXꢁandꢁYꢁ
ORTHXZꢁ BetweenꢁXꢁandꢁZꢁ
ORTHYZꢁ BetweenꢁYꢁandꢁZꢁ
ꢃ0.3ꢁ
ꢃ10ꢁ
ꢃ10ꢁ
0.3ꢁ
10ꢁ
10ꢁ
Degꢁ
Degꢁ
Degꢁ
ThermalꢁOffsetꢁDriftꢁꢁ#1ꢁonꢁtheꢁ
ꢁ
ThermalꢁOffsetꢁDriftꢁatꢁtheꢁDSPꢁꢁ
inputꢁ(excl.ꢁDACꢁandꢁoutputꢁstage)ꢁ
TemperatureꢁsuffixꢁKꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
rawꢁsignalsꢁX,ꢁYꢁandꢁZ(14)
ꢁ
ꢃ60ꢁ
ꢃ90ꢁ
+60ꢁ
+90ꢁ
LSB15ꢁ
LSB15ꢁ
TemperatureꢁsuffixꢁLꢁ
ThermalꢁOffsetꢁDriftꢁ#2ꢁ
(toꢁbeꢁconsideredꢁonlyꢁforꢁtheꢁ
analogꢁoutputꢁmode)ꢁ
ꢁ
ThermalꢁOffsetꢁDriftꢁꢁofꢁtheꢁDACꢁꢁ
andꢁOutputꢁStageꢁ
TemperatureꢁsuffixꢁKꢁ
TemperatureꢁsuffixꢁLꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢃꢁ0.3ꢁ
ꢃꢁ0.4ꢁ
+ꢁ0.3ꢁ
+ꢁ0.4ꢁ
%VDDꢁ
%VDD
ꢁ
ThermalꢁDriftꢁofꢁSensitivityꢁ
Mismatchꢁ
TemperatureꢁsuffixꢁKꢁ
TemperatureꢁsuffixꢁLꢁ
ꢃꢁ0.3ꢁ
ꢃꢁ0.5ꢁ
ꢁ
ꢁ
+ꢁ0.3ꢁ
+ꢁ0.5ꢁ
%ꢁ
%ꢁ
ꢄSMISMXYꢁ
ꢄSMISMXZꢁ TemperatureꢁsuffixꢁKꢁ
ꢄSMISMYZꢁ TemperatureꢁsuffixꢁLꢁ
ꢃꢁ1ꢁ
ꢃꢁ1.5ꢁ
+ꢁ1ꢁ
+ꢁ1.5ꢁ
%ꢁ
%ꢁ
AnalogꢁOutputꢁResolutionꢁ
OutputꢁstageꢁNoiseꢁ
RDAC
ꢁ
12ꢁbitsꢁDACꢁ(Theoreticalꢁ–ꢁNoiseꢁfree)ꢁ
INLꢁ
DNLꢁ
ꢁ
0.025ꢁ
ꢁ
0ꢁ
ꢁ
%VDD/LSBꢁ
LSBꢁ
ꢃ4ꢁ
ꢃ1ꢁ
+4ꢁ
1ꢁ
LSBꢁ
ꢁ
ClampedꢁOutputꢁ
ꢁ
0.05ꢁ
ꢁ
%VDDꢁ
ꢁꢁMLX90333ꢁAccuracyꢁSpecificationꢁcontinues…ꢁ
…ꢁMLX90333ꢁAccuracyꢁSpecificationꢁ
Noiseꢁpkꢃpk(15)
ꢁ
ꢁ
Gainꢁ=ꢁ14,ꢁSlowꢁmode,ꢁFilter=5ꢁ
ꢁ
5ꢁ
10ꢁ
LSB15ꢁ
12ꢁ15ꢁbitsꢁcorrespondsꢁtoꢁ14ꢁbitsꢁ+ꢁsignꢁandꢁ14ꢁbitsꢁcorrespondsꢁtoꢁ13ꢁbitsꢁ+ꢁsign.ꢁAfterꢁangularꢁcalculation,ꢁthisꢁcorrespondsꢁtoꢁ
0.005Deg/LSB15ꢁinꢁLowꢁSpeedꢁModeꢁandꢁ0.01Deg/LSB14ꢁinꢁHighꢁSpeed.ꢁ
13ꢁTheꢁmismatchꢁbetweenꢁXꢁandꢁZꢁ(YꢁandꢁZ)ꢁcanꢁbeꢁreducedꢁthroughꢁtheꢁcalibrationꢁofꢁtheꢁ2ꢁparametersꢁkZꢁandꢁktꢁasꢁdescribedꢁinꢁ
theꢁformulasꢁpageꢁ12ꢁinꢁorderꢁtoꢁtakeꢁintoꢁaccountꢁtheꢁICꢁmismatchꢁandꢁsystemꢁtolerancesꢁ(magneticꢁandꢁmechanical).ꢁ
14ꢁToꢁevaluateꢁtheꢁerrorꢁaffectingꢁtheꢁcomputedꢁangleꢁi.e.ꢁ“ATAN”ꢁfunctionꢁ(Seeꢁsectionꢁ5),ꢁitꢁisꢁimportantꢁtoꢁtakeꢁintoꢁaccountꢁtheꢁ
actualꢁvalueꢁofꢁtheꢁfactorꢁkZꢁasꢁitꢁamplifiesꢁtheꢁsignalꢁVZꢁandꢁconsequentlyꢁitsꢁdriftꢁtoo.ꢁ
15ꢁ Theꢁ applicationꢁ diagramꢁ usedꢁ isꢁ describedꢁ inꢁ theꢁ recommendedꢁ wiring.ꢁ Forꢁ detailedꢁ information,ꢁ referꢁ toꢁ sectionꢁ Filterꢁ inꢁ
applicationꢁmodeꢁ(Sectionꢁ13.6).ꢁꢁ
3901090333
Rev. 007
Page 17 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
Gainꢁ=ꢁ14,ꢁFastꢁmode,ꢁFilter=0ꢁ
ꢁ
10ꢁ
0ꢁ
20ꢁ
0.1ꢁ
ꢁ
LSB15ꢁ
%VDD
DC/LSBꢁ
RatiometryꢁErrorꢁ
ꢁ
ꢃ0.1ꢁ
ꢁ
PWMꢁOutputꢁResolutionꢁ
PWMꢁJitterꢁ
RPWM
ꢁ
12ꢁbitsꢁ(Theoreticalꢁ–ꢁJitterꢁfree)ꢁ
Gainꢁ=ꢁ11,ꢁFPWMꢁ=ꢁ250ꢁHzꢁ–ꢁ800Hzꢁ
Theoreticalꢁ–ꢁJitterꢁfreeꢁ
ꢁ
ꢁ
ꢁ
0.025ꢁ
ꢁ
%
JPWM
RSPI
ꢁ
5ꢁ
LSB12ꢁ
bitsꢁ
SerialꢁOutputꢁResolutionꢁ
ꢁ
16ꢁ
ꢁ
10. MLX90333 Magnetic Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for TA as specified by the
Temperature suffix (K or L).
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
MagneticꢁFluxꢁDensityꢁ
MagneticꢁFluxꢁDensityꢁ
BX,ꢁBY(16)ꢁ
BZ(16)ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
20ꢁ
24ꢁ
50ꢁ
75ꢁ
ꢁ
70(17)
140ꢁ
0ꢁ
ꢁ
mTꢁ
mTꢁ
MagnetꢁTemperatureꢁCoefficientꢁ TCmꢁ
IMCꢁGain(18)
GainIMCꢁ
ꢃ2400ꢁ
1.2ꢁ
ppm/°Cꢁ
ꢁ
ꢁ
1.4ꢁ
1.8ꢁ
11. MLX90333 CPU & Memory Specification
The DSP is based on a 16 bit RISC ꢂController.ꢀThisꢀCPU provides 5 Mips while running at 20 MHz.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
ROMꢁ
RAMꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
10ꢁ
ꢁ
ꢁ
ꢁ
kBꢁ
Bꢁ
256ꢁ
128ꢁ
EEPROMꢁ
Bꢁ
16ꢁTheꢁconditionꢁmustꢁbeꢁfulfilledꢁforꢁatꢁleastꢁoneꢁfieldꢁBX,ꢁBYꢁorꢁBZ.ꢁ
17ꢁAboveꢁ70ꢁmT,ꢁtheꢁIMCꢁstartsꢁsaturatingꢁyieldingꢁtoꢁanꢁincreaseꢁofꢁtheꢁlinearityꢁerror.
18ꢁThisꢁisꢁtheꢁmagneticꢁgainꢁlinkedꢁtoꢁtheꢁIntegratedꢁMagnetoꢁConcentratorꢁstructure.ꢁItꢁappliesꢁtoꢁBXꢁandꢁBYꢁandꢁnotꢁtoꢁBZ.ꢁThisꢁ
isꢁtheꢁoverallꢁvariation.ꢁWithinꢁoneꢁlot,ꢁtheꢁpartꢁtoꢁpartꢁvariationꢁisꢁtypicallyꢁ±ꢁ10%ꢁversusꢁtheꢁaverageꢁvalueꢁofꢁtheꢁIMCꢁgainꢁofꢁthatꢁ
lot.ꢁ
3901090333
Rev. 007
Page 18 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
12. MLX90333 End-User Programmable Items
Default Values
Parameter
MAINMODE
OutputsꢁMode
PWMPOL1
PWMPOL2
PWM_Freq
3ꢃPoints
ALPHA_POL
ALPHA_MOD180
ALPHA_DP
ALPHA_DEADZONE
ALPHA_S0
ALPHA_X
Comments
BCH
STD/IP1
BCH
SPI
0
BCT
STD/IP1
# bit
SelectꢁOutputsꢁConfiguration
Defineꢁtheꢁoutputꢁstagesꢁmode
PWMꢁPolarityꢁ(Outꢁ1)
PWMꢁPolarityꢁ(Outꢁ2)
PWMꢁFrequency
4ꢁsegmentsꢁtransferꢁcurveꢁforꢁsingleꢁangleꢁoutput
RevertꢁtheꢁSignꢁofꢁAlpha
ModuloꢁOperationꢁ(180deg)ꢁonꢁAlpha
AlphaꢁDiscontinuityꢁPoint
AlphaꢁDeadꢁZone
0
2
0
0
2
0
0
2
3
1
1
16
1
1
1
8
6
16
16
16
16
1
1
6
8
N/A
N/A
N/A
N/A
0
0
1000h
0
0
1
0
1000h
0
0
1
0
0
1
0
0
0
0
InitialꢁSlope
4000h
4000h
8000h
4000h
0
1
0
0
4000h
4000h
8000h
4000h
0%
100%
0
4000h
4000h
8000h
4000h
0
1
0
0
4000h
4000h
8000h
4000h
0%
4000h
4000h
8000h
4000h
0
1
0
0
4000h
4000h
8000h
4000h
0%
AlphaꢁXꢁCoordinate
AlphaꢁYꢁCoordinate
AlphaꢁSꢁCoordinate
RevertꢁtheꢁSignꢁofꢁBeta
ModuloꢁOperationꢁ(180deg)ꢁonꢁBeta
BetaꢁDiscontinuityꢁPoint
BetaꢁDeadꢁZone
ALPHA_Y
ALPHA_S1
BETA_POL
BETA_MOD180
BETA_DP
BETA_DEADZONE
BETA_S0
BETA_X
BETA_Y
BETA_S1
BetaꢁDeadꢁZone
16
16
16
16
16
16
1
BetaꢁXꢁCoordinate
BetaꢁYꢁCoordinate
BetaꢁSꢁCoordinate
CLAMP_LOW
CLAMP_HIGH
2D
ClampingꢁLow
ClampingꢁHigh
100%
0
100%
0
XYZ
SPIꢁOnly
0
0
0
1
KZ
B3h
80h
0h
0h
40hꢁ
3ꢁ
B3h
80h
0h
0h
40hꢁ
0ꢁ
8
8
8
8
8
8
KT(19)
N/A
FIELDTHRES_LOW
FIELDTHRES_HIGH
DERIVGAINꢁ
FILTERꢁ
0h
0h
40h
3
FILTERꢁA1ꢁ
FILTERꢁA2ꢁ
FILTERFIRSTꢁ
FHYSTꢁ
FilterꢁcoefficientꢁA1ꢁforꢁFILTER=6
FilterꢁcoefficientꢁA2ꢁforꢁFILTER=6
6600hꢁ
2A00hꢁ
0ꢁ
6600hꢁ
2A00hꢁ
0ꢁ
6600h
2A00h
0
16
16
1
0ꢁ
0ꢁ
0
8
MELEXISID1ꢁ
MELEXISID2ꢁ
MELEXISID3ꢁ
CUSTUMERID1ꢁ
CUSTUMERID2ꢁ
CUSTUMERID3ꢁ
HIGHSPEEDꢁ
GAINMINꢁ
MLXꢁ
MLXꢁ
MLXꢁ
1ꢁ
17d(20)
MLXꢁ
0ꢁ
MLXꢁ
MLXꢁ
MLXꢁ
1ꢁ
37dꢁ
MLXꢁ
0ꢁ
MLX
MLX
MLX
1
38d
MLX
0
16
16
16
16
16
16
1
ꢁ
0ꢁ
0ꢁ
0
8
19ꢁOnlyꢁapplicableꢁforꢁ90333BCHꢁ
20ꢁCUSTUMERID2ꢁ=ꢁ29dꢁforꢁMLX90333SDC–BCH–STANDARDꢁ
3901090333
Rev. 007
Page 19 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
GAINMAXꢁ
41dꢁ
41dꢁ
41d
8
End-User Programmable Items continues...
… End-User Programmable Itemsꢁ
EEHAMHOLEꢁ
3131hꢁ
1hꢁ
0hꢁ
0hꢁ
N/Ahꢁ
0hꢁ
3131hꢁ
0hꢁ
0hꢁ
16ꢁ
2ꢁ
1ꢁ
Diagn mode
RESONFAULTꢁ
MLXLOCKꢁ
LOCKꢁ
0hꢁ
1hꢁ
0hꢁ
1ꢁ
Extra end-User Programmable Items 90333BCT
AGCRADIUSTARGET(21)
SWTHRESꢁ
SWLOWꢁ
SWHIGHꢁ
SWHYSTꢁ
CodePWMLATCHꢁ
OUT1DIAGꢁ
OUT2DIAGꢁ
CodeKTALPHAꢁ
CodeKTBETAꢁ
CodeORTHZXALPHAꢁ
CodeORTHZYALPHAꢁ
CodeORTHZXBETAꢁ
CodeORTHZYBETAꢁ
CodeENHORTHꢁ
ꢁ
DefineꢁGainꢁtargetꢁ64%ꢁ/ꢁꢁ90%ꢁADCꢁ
AngleꢁTriggerꢁlevelꢁforꢁswitchꢁonꢁout2ꢁ
SwitchꢁLowꢁlevelꢁoutputꢁonꢁout2ꢁ
Switchꢁhighꢁlevelꢁoutputꢁonꢁout2ꢁ
Switchꢁhysteresisꢁ
Enableꢁsynchronizedꢁ%ꢁDCꢁupdateꢁꢁ
ActiveꢁDiagnosticꢁOutputꢁ1ꢁbehaviorꢁ
ActiveꢁDiagnosticꢁOutputꢁ2ꢁbehaviorꢁ
“Joystick”ꢁALPHAꢁangleꢁcorrectionꢁparameterꢁ
“Joystick”ꢁBETAꢁangleꢁcorrectionꢁparameterꢁ
Frontꢃendꢁ“Joystick”ꢁangleꢁcorrectionꢁparameterꢁꢁ
Frontꢃendꢁ“Joystick”ꢁangleꢁcorrectionꢁparameterꢁ
Frontꢃendꢁ“Joystick”ꢁangleꢁcorrectionꢁparameterꢁ
Frontꢃendꢁ“Joystick”ꢁangleꢁcorrectionꢁparameterꢁ
EnableꢁenhancedꢁFrontꢃendꢁ“Joystick”ꢁangleꢁ
correctionꢁꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
N/Aꢁ
0ꢁ
FFFFhꢁ
40hꢁ
FFhꢁ
0ꢁ
1ꢁ
0ꢁ
0ꢁ
80hꢁ
80hꢁ
0ꢁ
0ꢁ
0ꢁ
1ꢁ
16ꢁ
8ꢁ
8ꢁ
8ꢁ
1ꢁ
1ꢁ
1ꢁ
8ꢁ
8ꢁ
8ꢁ
8ꢁ
8ꢁ
8ꢁ
0ꢁ
N/Aꢁ
N/Aꢁ
0ꢁ
1ꢁ
21ꢁOptionꢁtoꢁuseꢁsameꢁADCꢁtargetꢁasꢁ90333BCH.ꢁDefaultꢁvalueꢁequalsꢁloweredꢁ%ꢁADCꢁtargetꢁꢁ
3901090333
Rev. 007
Page 20 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
13. Description of End-User Programmable Items
13.1. Output Configuration
The parameter MAINMODE defines the output stages configuration
MAINMODE
OUT1
ALPHAꢁ
BETAꢁ
OUT2
BETAꢁ
0ꢁ
1ꢁ
2ꢁ
3ꢁ
ALPHAꢁ
ALPHAꢁ
BETAꢁ
ALPHAꢁDERIVATEꢁ/ꢁSWITCH(22)
ꢁ
BETAꢁDERIVATEꢁ/ꢁSWITCH(22)
ꢁ
13.2. Output Mode
The MLX90333 outputs type is defined by the Output Mode parameter.
Parameter
Value
Description
AnalogꢁRailꢃtoꢃRailꢁ
2ꢁ
AnalogꢁOutputꢁModeꢁ
5ꢁ
7ꢁ
LowꢁSideꢁ(NMOS)ꢁ
PushꢃPullꢁ
PWMꢁOutputꢁModeꢁ
Serialꢁ
N/Aꢁ
LowꢁSideꢁ(NMOS)ꢁ
13.2.1. Analog Output Mode
The Analog Output Mode is a rail-to-rail and ratiometric output with a push-pull output stage configuration
allows the use of a pull-up or pull-down resistor.
13.2.2. PWM Output Mode
If one of the PWM Output modes is selected, the output signal is a digital signal with Pulse Width
Modulation (PWM).
In mode 5, the output stage is an open drain NMOS transistor (low side), to be used with a pull-up resistor
to VDD
In mode 7, the output stage is a push-pull stage for which Melexis recommends the use of a pull-up
resistor to VDD
.
.
The PWM polarity of the Out 1 (Out 2) is selected by the PWMPOL1 (PWMPOL2) parameter:
•
•
PWMPOL1 (PWMPOL2) = 0 for a low level at 100%
PWMPOL1 (PWMPOL2) = 1 for a high level at 100%
The PWM frequency is selected by the PWM_Freq parameter.
PWM Frequency Code
Pulse-Width Modulation Frequency (Hz)
Oscillator Mode
100
200
500
1000
LowꢁSpeedꢁ
35000ꢁ
17500ꢁ
7000ꢁ
3500ꢁ
22ꢁDerivateꢁ=ꢁBCHꢁ,ꢁSwitchꢁ=ꢁBCT
3901090333
Rev. 007
Page 21 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
HighꢁSpeedꢁ
ꢃꢁ
50000ꢁ
20000ꢁ
10000ꢁ
For instance, in Low Speed Mode, set PWM_Freq = 7000 (decimal) to set the PWM frequency at 500Hz.
13.2.3. Serial Protocol Output Mode
The MLX90333 features a digital Serial Protocol mode. The MLX90333 is considered as a Slave node.
The frame layer type is defined by the parameter XYZ as described in the next table.
Parameter
Value
Description
0ꢁ
1ꢁ
RegularꢁSPIꢁFrameꢁAlpha,ꢁBetaꢁ
X,Y,ꢁZꢁFrameꢁ
XYZꢁ
See the dedicated Serial Protocol section for a full description (Section 15).
13.2.4. Switch Out
Parameter
SWTHRES
SWHYST
SWLOW
Value
0…100
0 … 0.39
0…100
0…100
Unit
%
%
%
SWHIGH
%
The output level on out2 is changed from SWLOW to SWHIGH when the output value is greater than the
value stored in the SWTHRES parameter.
The SWHYST defines the hysteresis amplitude around the Switch point. The switch is actually activated if
the digital output value is greater than SWTHRES+SWHYST. It is deactivated if the digital output value is
less than SWTHRES-SWHYST.
If the Switch feature is not used in the application, the output pin needs to be connected to the ground and
disabled in EEPROM.
13.3. Output Transfer Characteristic
Parameter
Value
Description
0ꢁ
1ꢁ
RegularꢁAlpha,ꢁBetaꢁOutputꢁ(2ꢁtimesꢁ2ꢁsegments)ꢁ
Alphaꢁ(orꢁBeta)ꢁSingleꢁOutputꢁ(1ꢁtimeꢁ4ꢁsegments)ꢁ
3ꢃPointsꢁ
The 3-Points parameters allow the user to use the 3-points mapping (4 segments). This mode can only be
used for Mainmode equals 2 and 3.
•
3-Points = 0, the parameters list is described as bellow (Angle Alpha and Beta):
Parameter
Value
Unit
ALPHA_POLꢁ
BETA_POLꢁ
0ꢁ
1ꢁ
ꢁ
3901090333
Rev. 007
Page 22 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
ALPHA_MOD180ꢁ
BETA_MOD180ꢁ
0ꢁ
1ꢁ
ꢁ
ALPHA_DPꢁ
BETA_DPꢁ
degꢁ
degꢁ
%ꢁ
0ꢁ…ꢁ359.9999ꢁ
0ꢁ…ꢁ359.9999ꢁ
0ꢁ…ꢁ100ꢁ
ALPHA_Xꢁ
BETA_Xꢁ
ALPHA_Yꢁ
BETA_Yꢁ
ALPHA_S0ꢁ
ALPHA_S1ꢁ
BETA_S0ꢁ
BETA_S1ꢁ
%/degꢁ
0ꢁ…ꢁ17ꢁ
CLAMP_LOWꢁ
CLAMP_HIGHꢁ
%ꢁ
%ꢁ
0ꢁ…ꢁ100ꢁ
0ꢁ…ꢁ100ꢁ
ALPHA_DEADZONEꢁ
BETA_DEADZONEꢁ
degꢁ
0ꢁ…ꢁ359.9999ꢁ
•
3-Points = 1, the parameters list is described as bellow (Alpha or Beta):
Parameter
ALPHA_POLꢁ
DPꢁ
Value
Unit
ꢁ
0ꢁꢂꢁCCWꢁ
1ꢁꢂꢁCWꢁ
degꢁ
0ꢁ…ꢁ359.9999ꢁ
LNR_A_Xꢁ
LNR_B_Xꢁ
degꢁ
0ꢁ…ꢁ359.9999ꢁ
LNR_C_Xꢁ
LNR_A_Yꢁ
LNR_B_Yꢁ
LNR_C_Yꢁ
%ꢁ
0ꢁ…ꢁ100ꢁ
0ꢁ…ꢁ17ꢁ
LNR_S0ꢁ
LNR_A_Sꢁ
LNR_B_Sꢁ
%/degꢁ
LNR_C_Sꢁ
CLAMP_LOWꢁ
CLAMP_HIGHꢁ
DEADZONEꢁ
%/degꢁ
%ꢁ
ꢃ17…ꢁ0ꢁ…ꢁ17ꢁ
0ꢁ…ꢁ100ꢁ
%ꢁ
0ꢁ…ꢁ100ꢁ
degꢁ
0ꢁ…ꢁ359.9999ꢁ
13.3.1. The Polarity and Modulo Parameters
The angle Alpha is defined as the arctangent of Z/X and Beta as the arctangent of Z/Y. It is possible to
invert the polarity of these angles via the parameters ALPHA_POL and BETA_POL set to “1”.
The
MLX90333
can
ALPHA_MOD180/BETA_MOD180 to “1”.
also
be
insensitive
to
the
field
polarity
by
setting
the
3901090333
Rev. 007
Page 23 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
z
β
y
α
x
13.3.2. Alpha/Beta Discontinuity Point (or Zero Degree Point)
The Discontinuity Point defines the zero point of the circle (Alpha or Beta). The discontinuity point places
the origin at any location of the trigonometric circle (see Figure 13).
For a Joystick Application, Melexis recommends to set the DP to zero.
13.3.3. LNR Parameters
The LNR parameters, together with the clamping values, fully define the relation (the transfer function)
between the digital angles (Alpha and Beta) and the output signals.
The shape of the MLX90333 transfer function from the digital angle values to the output voltages is
described by the drawing below (See Figure 11). Four segments can be programmed but the clamping
levels are necessarily flat (3-Points = 0).
100%
Clamping High
CLAMPHIGH
C
ALPHA_S1
B
ALPHA_Y
ALPHA_S0
A
Clamping Low
CLAMPLOW
0%
0°
Alpha
360°
ALPHA_X
Figureꢁ11ꢁꢃꢁDigitalꢁAngleꢁ(Alpha)ꢁTransferꢁCharacteristicꢁ(IdemꢁdittoꢁforꢁBeta)ꢁ
In the case of one single angle output (3-Points = 1), the shape of the MLX90333 transfer function from
the digital angle values to the output voltage is described by the drawing below (See Figure 12). Six
3901090333
Rev. 007
Page 24 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
segments can be programmed but the clamping levels are necessarily flat.
100 %
CLAMPHIGH
Clamping High
C
Slope LNR_C_S
LNR_C_Y
B
Slope LNR_B_S
LNR_B_Y
LNR_A_Y
A
Slope LNR_A_S
Slope LNR_S0
Clamping Low
CLAMPLOW
0 %
LNR_A_X
LNR_B_X
LNR_C_X
360
0
(Deg.)
Figureꢁ12ꢁ–ꢁDigitalꢁAngleꢁ(Alpha)ꢁTransferꢁCharacteristicꢁforꢁSingleꢁAngleꢁOutputꢁ
13.3.4. CLAMPING Parameters
The clamping levels are two independent values to limit the output voltage range. The CLAMP_LOW
parameter adjusts the minimum output voltage level. The CLAMP_HIGH parameter sets the maximum
output voltage level. Both parameters have 16 bits of adjustment. In analog mode, the resolution will be
limited by the D/A converter (12 bits) to 0.024%VDD. In PWM mode, the resolution will be 0.024%DC. In
SPI mode, the resolution is 14bits or 0.022deg over 360deg.
13.3.5. DEADZONE Parameter
The dead zone is defined as the angle window between 0 and 359.9999 (See Figure 13).
When the digital angle (Alpha or Beta) lies in this zone, the IC is in fault mode (RESONFAULT must be
set to “1” – See 13.8.2).
In case of ALPHA_MOD180 (or BETA_MOD180) is not set, the angle between 180° and 360° will
generate a “deadzone” fault, unless DEADZONE=0.
3901090333
Rev. 007
Page 25 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
z
90°
Programmable 0°point
α
0°
180°
x
Programmable Forbidden Zone
Figure 13 – Discontinuity Point and Dead Zone (Alpha – Idem ditto for Beta)
13.4. Identification
Parameter
Value
Unit
MELEXSID1
MELEXSID2
MELEXSID3
0 … 65535
0 … 65535
0 … 65535
0 … 65535
0 … 65535
0 … 65535
CUSTUMERID1
CUSTUMERID2
CUSTUMERID3
Identification number: 48 bits freely useable by Customer for traceability purpose.
13.5. Sensor Front-End
Parameter
Value
Unit
0 = Slow mode
1 = Fast mode
HIGHSPEED
GAINMIN
GAINMAX
0 … 41
0 … 41
FIELDTHRES_LOW
FIELDTHRES_HIGH
0 … 100
0 … 100
%
%
13.5.1. HIGHSPEED Parameter
The HIGHSPEED parameter defines the main frequency for the DSP.
•
•
HIGHSPEED = 0 selects the Slow mode with a 7 MHz master clock.
HIGHSPEED = 1 selects the Fast mode with a 20 MHz master clock.
For better noise performance, the Slow Mode must be enabled.
3901090333
Rev. 007
Page 26 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
13.5.2. GAINMIN and GAINMAX Parameters
The MLX90333 features an automatic gain control (AGC) of the analog chain. The AGC loop is based on
Max(|VX|, |VY|, |VZ|) = |Amplitude| = Radius
and it targets an amplitude of 90% of the ADC input span.
In MLX90333BCT, this default target is changed to 64% but can be set to 90% by enabling the parameter
AGCRADIUSTARGET.
The current gain can be read out with the programming unit PTC-04 and gives a rough indication of the
applied magnetic flux density (Amplitude).
GAINMIN & GAINMAX define the boundaries within the gain setting is allowed to vary. Outside this range,
the outputs are set in diagnostic low.
13.5.3. FIELDTHRES_LOW and FIELDTHRES_HIGH Parameters
The strength of the applied field is constantly calculated in a background process. The value of this field
can be read out with the PTC-04 and gives a rough indication of the applied magnetic flux density
(Amplitude).
FIELDTHRES_LOW & FIELDTHRES_HIGH define the boundaries within the actual field strength
(Radius) is allowed to vary. Outside this range, the outputs are set in diagnostic low.
3901090333
Rev. 007
Page 27 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
13.6. FILTER
Parameter
FHYST
Value
Unit
deg
0
…
11 ; step 0.04
0… 6
FILTER
0
1
FILTERFIRST
The MLX90333 includes 3 types of filters:
•
•
•
Hysteresis Filter: programmable by the FHYSTꢁparameter
Low Pass FIR Filters controlled with the Filter parameter
Low Pass IIR Filter controlled with the Filter parameter and the coefficients FILTER A1 and
FILTER A2
Note: if the parameter FILTERFIRST is set to “1”, the filtering is active on the digital angle. If set to “0”, the
filtering is active on the output transfer function.
13.6.1. Hysteresis Filter
The FHYST parameter is a hysteresis filter. The output value of the IC is not updated when the digital step
is smaller than the programmed FHYST parameter value. The output value is modified when the
increment is bigger than the hysteresis. The hysteresis filter reduces therefore the resolution to a level
compatible with the internal noise of the IC. The hysteresis must be programmed to a value close to the
noise level.
13.6.2. FIR Filters
The MLX90333 features 6 FIR filter modes controlled with Filter = 0…5. The transfer function is described
below:
j
1
yn =
a x
i n−i
∑
j
i=0
a
∑
i
i=0
The characteristics of the filters no 0 to 5 is given in the Table 1.
FilterꢀNoꢀ(j)ꢀ
Typeꢁ
0ꢀ
1ꢀ
2ꢀ
3ꢀ
4ꢀ
5ꢀ
Disableꢁ
FiniteꢁImpulseꢁResponseꢁ
Coefficientsꢁa0…ꢁa5ꢁ
Titleꢁ
N/Aꢁ
110000ꢁ
121000ꢁ
133100ꢁ
111100ꢁ
Lightꢁ
4ꢁ
122210ꢁ
NoꢁFilterꢁ
ExtraꢁLightꢁ
90%ꢁResponseꢁTimeꢁ(CT)ꢁ
99%ꢁResponseꢁTimeꢁ(CT)ꢁ
EfficiencyꢁRMSꢁ(dB)ꢁ
EfficiencyꢁP2Pꢁ(dB)ꢁ
1ꢁ
1ꢁ
0ꢁ
0ꢁ
2ꢁ
2ꢁ
3ꢁ
3ꢁ
4ꢁ
4ꢁ
5ꢁ
5ꢁ
4ꢁ
2.9ꢁ
2.9ꢁ
4.0ꢁ
3.6ꢁ
4.7ꢁ
5.0ꢁ
5.6ꢁ
6.2ꢁ
7.0ꢁ
6.1ꢁ
Table 1 - FIR Filters Selection Table
Page 28 of 48
3901090333
Rev. 007
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
FIR and HYST Filters : Step response Comparative Plot
40000
38000
36000
34000
32000
30000
x(n)
fir(n)
hyst(n)
0
5
10
15
Milliseconds
20
25
30
FIR and HYST Filter : Gaussian white noise response
40200
40150
40100
40050
40000
39950
39900
39850
39800
x(n)
fir(n)
hyst(n)
0
50
100
150
Milliseconds
Figure 14 - Step Response and Noise Response for FIR (No 3) and FHYST=10
13.6.3. IIR Filters
The IIR Filter is enabled with Filter = 6. The diagram of the IIR Filter implemented in the MLX90333 is
given in Figure 15. Only the parameter A1 and A2 are configurable (See Table 2).
b0 = 1
x(n)
y(n)
Zꢁ1
Zꢁ1
b1 = 2
-a1
Zꢁ1
Zꢁ1
b2 = 1
-a2
Figure 15 - IIR Diagram
Page 29 of 48
3901090333
Rev. 007
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
FilterꢀNoꢀ
Typeꢁ
6ꢀ
2ndꢁOrderꢁInfiniteꢁImpulseꢁResponseꢁ(IIR)ꢁ
Titleꢁ
Mediumꢁ&ꢁStrongꢁ
90%ꢁResponseꢁTimeꢁ(CT)ꢁ
EfficiencyꢁRMSꢁ(dB)ꢁ
EfficiencyꢁP2Pꢁ(dB)ꢁ
CoefficientꢁA1ꢁ
CoefficientꢁA2ꢁ
11ꢁ
9.9ꢁ
16ꢁ
26ꢁ
40ꢁ
52ꢁ
16.2ꢁ
20ꢁ
100ꢁ
>20ꢁ
11.4ꢁ
13.6ꢁ
17.1ꢁ
15.3ꢁ
12.9ꢁ
14.6ꢁ
18.8ꢁ
>20ꢁ
26112ꢁ
10752ꢁ
28160ꢁ
12288ꢁ
29120ꢁ
12992ꢁ
30208ꢁ
13952ꢁ
31296ꢁ
14976ꢁ
31784ꢁ
15412ꢁ
Table 2 - IIR Filter Selection Table
The Figure 16 shows the response of the filter to a Gaussian noise with default coefficient A1 and A2.
IIR Filter - Gaussian White Noise Response
40200
40150
x(n)
y(n)
40100
40050
40000
39950
39900
39850
39800
0
50
100
150
Time
Figure 16 - Noise Response for the IIR Filter
13.7. Programmable enhanced “joystick’ angle correction23
Parameter
Value
Unit
KTALPHA
KTBETA
[0..200] / 128
LSB
ORTHZXALPHA
ORTHZYALPHA
ORTHZXBETA
ORTHZYBETA
[-128…127] / 256
LSB
Disable = 0
Enable = 1
ENHORTH
23ꢁOnlyꢁapplicableꢁforꢁ90333BCTꢁ
3901090333
Rev. 007
Page 30 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
13.7.1. Enhanced “Joystick “Angle Formula
(kZVZ )2 + (kt (VY − ORTHzy *Vz ))2
VX − ORTHzx*Vz
α
β
= ATAN
= ATAN
(kZVZ )2 + (kt (Vx −ORTHzx*Vz ))2
Vy −ORTHzy*Vz
The enhanced “joystick” angle function is enabled by parameter ENORTH. Parameters are automatically
calculated when using the 90333BCT/ 9 points solver to optimize the shape of Betaout vs Alphaout in
accordance to the mechanical boundaries of the Joystick
13.8. Programmable Diagnostic Settings
Parameter
Value
DIAGLOW = 0
DIAGHIGH = 1
DIAGLOW = 0
DIAGHIGH = 1
Disable = 0
Enable = 1
Enable = 0
Disable = 3131h
OUT1DIAG
OUT2DIAG
RESONFAULT
EEHAMHOLE
13.8.1. OUTxDIAG Parameter
This OUT1DIAG, OUT2DIAG parameters define the behavior of the output in case of a diagnostic
situation.
13.8.2. RESONFAULT Parameter
This RESONFAULT parameter enables the soft reset when a fault is detected by the CPU when the
parameter is set to 1. It is recommended to set it to “1” to activate the self diagnostic modes (See section
14).
Note that in the User Interface (MLX90333UI), the RESONFAULT is a cluster of the following two bits, i.e.
the 2 bits are both disabled or both enabled:
•
•
DRESONFAULT: disable the reset in case of a fault.
DOUTINFAULT: disable output in diagnostic low in case of fault.
It is recommended to set both EEPROM parameters to “0” to activate the self diagnostic modes
3901090333
Rev. 007
Page 31 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
13.8.3. EEHAMHOLE Parameter
The EEHAMHOLE parameter disables the CRC check and memory recovery (Hamming code) check
when a fault is detected by the CRC when it is equal to 3131h. Melexis strongly recommends to set the
parameter to 0 (enable memory recovery). The parameter is set automatically to 0 by the solver function
“MemLock”.
13.9. Lock
Parameter
Value
0
1
0
1
MLXLOCK
LOCK
13.9.1. MLXLOCK Parameter
MLXLOCK locks all the parameters set by Melexis.
13.9.2. LOCK Parameter
LOCK locks all the parameters set by the user. Once the lock is enabled, it is not possible to change the
EEPROM values anymore.
Note that the lock bit should be set by the solver function “MemLock”.
3901090333
Rev. 007
Page 32 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
14. MLX90333 Self Diagnostic
The MLX90333 provides numerous self-diagnostic features. Those features increase the robustness of the IC
functionality as it will prevent the IC to provide erroneous output signal in case of internal or external failure
modes (“fail-safe”).
ꢀ
Actionꢀ
EffectꢀonꢀOutputsꢀ
Remarkꢀ
ROMꢁCRCꢁErrorꢁatꢁstartꢁupꢁ
(64ꢁwordsꢁincludingꢁIntelligentꢁ
WatchꢁDogꢁꢃꢁIWD)ꢁ
CPUꢁResetꢁ(24)
ꢁ
Diagnosticꢁlow(25)
ꢁ
Allꢁtheꢁoutputsꢁareꢁalreadyꢁ
inꢁDiagnosticꢁlowꢁꢃꢁ(startꢃup)ꢁ
ROMꢁCRCꢁErrorꢁ(Operationꢁꢃꢁ
Backgroundꢁtask)ꢁꢁ
EnterꢁEndlessꢁLoop:ꢁ
ꢃꢁProgressꢁ(watchdogꢁ
Acknowledge)ꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ꢁ
ꢃꢁSetꢁOutputsꢁinꢁDiagnosticꢁlowꢁ
RAMꢁTestꢁFailꢁ(Startꢁup)ꢁ
CPUꢁResetꢁ
Diagnosticꢁlowꢁ
ꢁ
Allꢁtheꢁoutputsꢁareꢁalreadyꢁ
inꢁDiagnosticꢁlowꢁ(startꢃup)ꢁ
StartꢃUpꢁTimeꢁisꢁincreasedꢁ
byꢁ3ꢁmsꢁifꢁsuccessfulꢁ
recoveryꢁ
CalibrationꢁDataꢁCRCꢁErrorꢁꢁ
(StartꢃUp)ꢁꢁ
HammingꢁCodeꢁRecoveryꢁ
HammingꢁCodeꢁRecoveryꢁErrorꢁ CPUꢁResetꢀꢁ
(StartꢃUp)ꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
Seeꢁ13.8.3ꢁ
CalibrationꢁDataꢁCRCꢁErrorꢁꢁ
(OperationꢁꢃꢁBackground)ꢁꢁ
DeadꢁZoneꢁAlphaꢁ
CPUꢁResetꢀꢁ
ꢁ
SetꢁOutputsꢁinꢁDiagnosticꢁlow.ꢁ
NormalꢁOperationꢁuntilꢁtheꢁ“deadꢁ
zone”ꢁisꢁleft.ꢁ
Immediateꢁrecoveryꢁifꢁtheꢁ
“deadꢁzone”ꢁisꢁleftꢁꢁ
DeadꢁZoneꢁBetaꢁ
ADCꢁClippingꢁ
(ADCꢁOutputꢁisꢁ0000hꢁorꢁ
7FFFh)ꢁ
RadiusꢁOverflowꢁ(ꢁ>ꢁ100%ꢁ)ꢁorꢁꢁ SetꢁOutputsꢁinꢁDiagnosticꢁlowꢁ
RadiusꢁUnderflowꢁꢁ
(ꢁ<ꢁ50ꢁ%ꢁ)ꢁ
SetꢁOutputsꢁinꢁDiagnosticꢁlowꢁ
NormalꢁmodeꢁandꢁCPUꢁResetꢁIfꢁ
recoveryꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ꢁ
(50ꢁ%ꢁꢃꢁ100ꢁ%)ꢁ
Noꢁmagnetꢁ/ꢁfieldꢁtooꢁhighꢁ
Seeꢁalsoꢁ13.5.2ꢁ
ꢁ
NormalꢁmodeꢁandꢁCPUꢁResetꢁIfꢁ
recoveryꢁꢁ
SetꢁOutputsꢁinꢁDiagnosticꢁlowꢁ
FieldꢁClippingꢁ
(Radiusꢁ<ꢁFIELDTHRES_LOWꢁ Normalꢁmode,ꢁandꢁNoꢁCPUꢁResetꢁ
orꢁRadiusꢁ>ꢁ
Ifꢁrecoveryꢁꢁ
FIELDTHRES_HIGH)ꢁ
RoughꢁOffsetꢁClippingꢁ
(ROꢁisꢁ<ꢁ0dꢁorꢁ>ꢁ127d)ꢁ
SetꢁOutputsꢁinꢁDiagnosticꢁlowꢁ
Normalꢁmode,ꢁandꢁCPUꢁResetꢁIfꢁ
recoveryꢁ
SetꢁOutputsꢁinꢁDiagnosticꢁlowꢁ
Normalꢁmode,ꢁandꢁCPUꢁResetꢁIfꢁ
recoveryꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ꢁ
GainꢁClippingꢁ
(Gainꢁ<ꢁGAINMINꢁorꢁGAINꢁ>ꢁ
GAINMAX)ꢁ
Seeꢁalsoꢁ13.5.2ꢁ
ꢁ
ImmediateꢁDiagnosticꢁlowꢁ
DACꢁMonitorꢁ(DigitalꢁtoꢁAnalogꢁ SetꢁOutputsꢁinꢁDiagnosticꢁlow.ꢁ
ꢁ
ꢁ
converter)ꢁ
NormalꢁModeꢁwithꢁimmediateꢁ
recoveryꢁwithoutꢁCPUꢁResetꢁ
ꢁ
MLX90333 Fault Mode continues…
24ꢁCPUꢁresetꢁmeansꢁ
1.
CoreꢁResetꢁ(sameꢁasꢁPowerꢃOnꢃReset).ꢁItꢁinducesꢁaꢁtypicalꢁstartꢁupꢁtime.ꢁ
2.
3.
4.
PeripheryꢁResetꢁ(sameꢁasꢁPowerꢃOnꢃReset)ꢁ
FaultꢁFlag/StatusꢁLostꢁ
TheꢁresetꢁcanꢁbeꢁdisabledꢁbyꢁclearingꢁtheꢁRESONFAULTꢁbitꢁ(Seeꢁ13.8.2)ꢁ
25ꢁReferꢁtoꢁsectionꢁ6ꢁforꢁtheꢁDiagnosticꢁOutputꢁLevelꢁspecificationsꢁꢁ
3901090333
Rev. 007
Page 33 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
…MLX90333 Fault Mode
FaultꢀModeꢀ
Actionꢀ
EffectꢀonꢀOutputsꢀ
Remarkꢀ
ImmediateꢁDiagnosticꢁlowꢁ
ADCꢁMonitorꢁ(AnalogꢁtoꢁDigitalꢁ SetꢁOutputsꢁinꢁDiagnosticꢁlow.ꢁ
ADCꢁInputsꢁareꢁShortedꢁ
ꢁ
Converter)ꢁ
NormalꢁModeꢁwithꢁimmediateꢁ
recoveryꢁwithoutꢁCPUꢁResetꢁ
ꢁ
ꢁ
ꢃꢁVDDꢁ<ꢁPORꢁlevelꢁ=>ꢁ
Outputsꢁhighꢁimpedanceꢁꢁ
ꢁ
ꢃꢁPORꢁlevelꢁ<ꢁVDDꢁ<ꢁ3ꢁVꢁ=>ꢁ
OutputsꢁinꢁDiagnosticꢁlow.ꢁ
UndervoltageꢁModeꢁ
AtꢁStartꢃUp,ꢁwaitꢁUntilꢁVDDꢁ>ꢁ3V.ꢁꢁ
ꢁ
Duringꢁoperation,ꢁCPUꢁResetꢁafterꢁ
3ꢁmsꢁdebouncingꢁꢁ
ꢁ
FirmwareꢁFlowꢁErrorꢁ
CPUꢁResetꢁ
CPUꢁResetꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
ImmediateꢁDiagnosticꢁlowꢁ
IntelligentꢁWatchdogꢁ
(Observer)ꢁ
100%ꢁHardwareꢁdetectionꢁ
Read/WriteꢁAccessꢁoutꢁofꢁ
physicalꢁmemoryꢁ
WriteꢁAccessꢁtoꢁprotectedꢁareaꢁ CPUꢁResetꢁ
(IOꢁandꢁRAMꢁWords)ꢁ
Unauthorizedꢁentryꢁinꢁ
“SYSTEM”ꢁModeꢁ
100%ꢁHardwareꢁdetectionꢁ
100%ꢁHardwareꢁdetectionꢁ
100%ꢁHardwareꢁdetectionꢁ
CPUꢁResetꢁ
V
DDꢁ>ꢁ7ꢁVꢁ
SetꢁOutputꢁHighꢁImpedanceꢁ
(Analog)ꢁ
Pullꢁdownꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁLowꢁ
ꢁ
Pullꢁupꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁHigh(25)
ꢁ
Noꢁvalidꢁdiagnosticꢁforꢁ
V
DDꢁ>ꢁ9.4ꢁVꢁ
ICꢁisꢁswitchedꢁoffꢁ(internalꢁsupply)ꢁ
CPUꢁResetꢁonꢁrecoveryꢁ
Pullꢁdownꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁLowꢁ
Pullꢁupꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁHighꢁ
V
PULLUPꢁ=ꢁVDD.ꢁ
ꢁ
Pullꢁupꢁloadꢁ(≤ꢁ10kꢀ)ꢁtoꢁ
PULLUPꢁ>ꢁ8ꢁVꢁtoꢁmeetꢁDiagꢁ
V
Hiꢁspecꢁ>ꢁ96%ꢁVdd.ꢁ
BrokenꢁVSS
ꢁ
CPUꢁResetꢁonꢁrecoveryꢁ
CPUꢁResetꢁonꢁrecoveryꢁ
100%ꢁHardwareꢁdetection.ꢁ
Pullꢁdownꢁloadꢁ≤ꢁ10ꢁkꢀꢁtoꢁ
meetꢁDiagꢁLowꢁspec:ꢁꢁ
ꢃꢁ<ꢁ4%ꢁVDDꢁ(temperatureꢁ
suffixꢁK)ꢁ
ꢃꢁcontactꢁMelexisꢁforꢁ
temperatureꢁsuffixꢁLꢁ
Noꢁvalidꢁdiagnosticꢁforꢁ
Pullꢁdownꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁLowꢁ
Pullꢁupꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁHighꢁ
BrokenꢁVDD
ꢁ
Pullꢁdownꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁLowꢁ
Pullꢁupꢁresistiveꢁloadꢁ=>ꢁ
Diag.ꢁHighꢁ
V
ꢁ
PULLUPꢁ=ꢁVDD.ꢁ
Pullꢁupꢁloadꢁ(≤ꢁ10kꢀ)ꢁtoꢁ
PULLUPꢁ>ꢁ8ꢁVꢁtoꢁmeetꢁDiagꢁ
V
Hiꢁspecꢁ>ꢁ96%ꢁVdd.ꢁ
3901090333
Rev. 007
Page 34 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
15. Serial Protocol
15.1. Introduction
The MLX90333 features a digital Serial Protocol mode. The MLX90333 is considered as a Slave node.
The serial protocol of the MLX90333 is a three wires protocol (/SS, SCLK, MOSI-MISO):
•
•
•
/SS pin is a 5 V tolerant digital input
SCLK pin is a 5 V tolerant digital input
MOSI-MISO pin is a 5 V tolerant open drain digital input/output
The basic knowledge of the standard SPI specification is required for the good understanding of the
present section.
15.2. SERIAL PROTOCOL Mode
•
•
CPHA = 1
CPOL = 0
ꢂ
ꢂ
even clock changes are used to sample the data
active-Hi clock
The positive going edge shifts a bit to the Slave’s output stage and the negative going edge samples the
bit at the Master’s input stage.
15.3. MOSI (Master Out Slave In)
The Master sends a command to the Slave to get the angle information.
15.4. MISO (Master In Slave Out)
The MISO of the slave is an open-collector stage. Due to the capacitive load (TBD) a >1 kΩ pull-up is
used for the recessive high level (in fast mode). Note that MOSI and MISO use the same physical pin of
the MLX90333.
15.5. /SS (Slave Select)
The /SS pin enables a frame transfer (if CPHA = 1). It allows a re-synchronization between Slave and
Master in case of communication error.
15.6. Master Start-Up
/SS, SCLK, MISO can be undefined during the Master start-up as long as the Slave is re-synchronized
before the first frame transfer.
15.7. Slave Start-Up
The slave start-up (after power-up or an internal failure) takes 16 ms. Within this time /SS and SCLK is
ignored by the Slave. The first frame can therefore be sent after 16 ms. MISO is Hi-Z (i.e. Hi-Impedance)
until the Slave is selected by its /SS input. MLX90333 will cope with any signal from the Master while
starting up.
3901090333
Rev. 007
Page 35 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
15.8. Timing
To synchronize communication, the Master deactivates /SS high for at least t5 (1.5 ms). In this case, the
Slave will be ready to receive a new frame. The Master can re-synchronize at any time, even in the middle
of a byte transfer.
Note: Any time shorter than t5 leads to an undefined frame state, because the Slave may or may not
have seen /SS inactive.
ꢀ
t4
t9
t6 t1
t1 t7 t1
t1
t5
t1
t2
SCLK
MOSI/
MISO
/SS
1 Startbyte
Byte 0
Byte 1
Byte 2
Byte 7
Timingsꢀ
Min(26)
ꢀ
Maxꢀ
Remarksꢀ
NoꢁcapacitiveꢁloadꢁonꢁMISO.ꢁ
t1ꢁ
2.3ꢁꢂsꢁ/ꢁ6.9ꢁꢂsꢁ
ꢃꢁ
t1ꢁ isꢁ theꢁ minimumꢁ clockꢁ periodꢁ forꢁ anyꢁ
bitsꢁwithinꢁaꢁbyte.ꢁ
t2ꢁtheꢁminimumꢁtimeꢁbetweenꢁanyꢁotherꢁ
byteꢁ
ꢁTimeꢁ betweenꢁ lastꢁ clockꢁ andꢁ
/SS=high=chipꢁdeꢃselectionꢁ
t2ꢁ
t4ꢁ
12.5ꢁꢂsꢁ/ꢁ37.5ꢁꢂsꢁ
2.3ꢁꢂsꢁ/ꢁ6.9ꢁꢂsꢁ
ꢃꢁ
ꢃꢁ
Minimumꢁ /SSꢁ =ꢁ Hiꢁ timeꢁ whereꢁ it’sꢁ
guaranteedꢁ thatꢁ aꢁ frameꢁ reꢃ
synchronizationsꢁwillꢁbeꢁstarted.ꢁ
Maximumꢁ /SSꢁ =ꢁ Hiꢁ timeꢁ whereꢁ it’sꢁ
guaranteedꢁ thatꢁ NOꢁ frameꢁ reꢃ
synchronizationsꢁwillꢁbeꢁstarted.ꢁ
Theꢁ timeꢁ t6ꢁ definesꢁ theꢁ minimumꢁ timeꢁ
betweenꢁ/SSꢁ=ꢁLoꢁandꢁtheꢁfirstꢁclockꢁedgeꢁ
t7ꢁisꢁtheꢁminimumꢁtimeꢁbetweenꢁtheꢁ
StartByteꢁandꢁtheꢁByte0ꢁ
t5ꢁ
t5ꢁ
300ꢁꢂsꢁ/ꢁ1500ꢁꢂsꢁ
0ꢂsꢁ
ꢃꢁ
ꢁ
ꢃꢁ
t6ꢁ
t7ꢁ
t9ꢁ
2.3ꢁꢂsꢁ/ꢁꢁ6.9ꢁꢂsꢁ
ꢃꢁ
ꢃꢁ
15ꢁꢂsꢁ/ꢁ45ꢁꢂsꢁ
Maximumꢁtimeꢁbetweenꢁ/SSꢁ=ꢁHiꢁandꢁ
MISOꢁBusꢁHighꢃImpedanceꢁ
Minimumꢁtimeꢁbetweenꢁꢁresetꢃinactiveꢁ
andꢁanyꢁmasterꢁsignalꢁchangeꢁ
ꢃꢁ
ꢃꢁ
<1ꢁꢂsꢁ
<ꢁ10ꢁmsꢁ/ꢁ16ꢁmsꢁ
TStartUp
ꢁ
26ꢁTimingsꢁshownꢁforꢁoscillatorꢁbaseꢁfrequencyꢁofꢁ20MHzꢁ(FastꢁMode)ꢁ/ꢁ7ꢁMHzꢁ(SlowꢁMode)ꢁ
3901090333
Rev. 007
Page 36 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
15.9. Slave Reset
On internal soft failures the Slave resets after 1 second or after an (error) frame is sent. On internal hard
failures the Slave resets itself. In that case, the Serial Protocol will not come up. The serial protocol link is
enabled only after the completion of the first synchronization (the Master deactivates /SS for at least t5).
15.10. Frame Layer
ꢀ
15.10.1. Frame Type Selection
See the programmable parameter XYZ in section 13.2.3 to select between the Alpha, Beta Frame and the
X, Y, Z Frame.
15.10.2. Data Frame Structure
The Figure 17 gives the timing diagram for the SPI Frame. The latch point for the angle measurement is
at the last clock before the first data frame byte.
Latch point
/SS
SCLK
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
MOSI
S
U
M
F
F
D
A
T
D
A
T
D
A
T
F
F
D
A
T
MISO
A
A
A
A
0
1
Alpha
Beta
Error
XYZ
X
Y
Z
Figure 17 - Timing Diagram for the SPI Frame
A data frame consists of:
Data Frame
XYZ = 0
XYZ = 1
1 start byte
FFh
2 data bytes (LSByte first)
2 data bytes (LSByte first)
2 data bytes (LSByte first)
1 SUM byte
Alpha
Beta
X
Y
Z
Error Code
8 LSB of the sum of the transmitted bytes
15.10.3. Timing
There are no timing limits for frames: a frame transmission could be initiated at any time. There is no inter-
frame time defined.
3901090333
Rev. 007
Page 37 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
15.10.4. Data Structure
The DATA could be a valid angle/field component or an error condition.
DATA: Angle/ Field Component A[15:0] with (Span)/216
Less Significant Byte
Most Significant Byte
msb
A7
lsb msb lsb
A6 A5 A4 A3 A2 A1 A0 A15 A14 A13 A12 A11 A10 A9 A8
DATA: Error
Less Significant Byte
Most Significant Byte
msb
E7
lsb msb lsb
E6 E5 E4 E3 E2 E1 E0 E15 E14 E13 E12 E11 E10 E9 E8
BIT
E0
E1
E2
E3
E4
NAME
-
-
F_ADCMONITOR
F_ADCSATURA
F_GAINTOOLOW
ADC Failure
ADC Saturation (Electrical failure or field too strong)
The gain code is strictly less than EE_GAINMIN
E5
E6
F_GAINTOOHIGH
F_NORMTOOLOW
The gain code is strictly greater than EE_GAINMAX
Goesꢀhighꢀwhenꢀtheꢀfastꢀnormꢀ(theꢀmaxꢀofꢀabsoluteꢀx,y,z)ꢀisꢀ
belowꢀ30%
E7
E8
F_FIELDTOOLOW
F_FIELDTOOHIGH
The norm (Square root) is strictly less than EE_FIELDLOW
The norm (Square root) is strictly greater than
EE_FIELDHIGH
E9
E10
F_ROCLAMP
-
E11 F_DEADZONEALPHA The angle ALPHA lies in the deadzone
Analog Chain Rough Offset Compensation: Clipping
E12
E13
E14
-
-
-
E15 F_DEADZONEBETA
The angle BETA lies in the deadzone
15.10.5. Angle Calculation
All communication timing is independent (asynchronous) of the angle data processing. The angle is
calculated continuously by the Slave:
•
•
Slow Mode: every 1.5 ms at most.
Fast Mode: every 350 s at most.
µ
The last angle calculated is hold to be read by the Master at any time. Only valid angles are transferred by
the Slave, because any internal failure of the Slave will lead to a soft reset.
15.10.6. Error Handling
In case of any errors listed in section 15.10.4, the Serial protocol will be initialized and the error condition
can be read by the master.
In case of any other errors (ROM CRC error, EEPROM CRC error, RAM check error, intelligent watchdog
error…) the Slave’s serial protocol is not initialized. The MOSI/MISO pin will stay Hi-impedant (no error
frames are sent).
3901090333
Rev. 007
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Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
16. Recommended Application Diagrams
16.1. Analog Output Wiring with the MLX90333 in SOIC Package
ECU
5 V
Vdd
C1
100nF
GND
Vdd
Vss
C3
100nF
MLX90333
C6
4.7nF
C2
100nF
Test 1
Vdig
ADC
NotUsed
Out 2
Test 2
Out 1
R1
10k
R2
10k
Out 1
Out 2
C4
100nF
C5
4.7nF
Figure 18 – Recommended wiring for the MLX90333 in SOIC8 package
16.2. PWM Low Side Output Wiring
ECU
5 V
Vdd
C1
100nF
GND
Vdd
Vss
C3
4.7nF
MLX90333
C6
4.7nF
5 V
C2
100nF
Test 1
Vdig
ADC
NotUsed
PWM 2
Test 2
R1
1k
R2
1k
PWM 1
PWM 2
PWM 1
C4
4.7nF
C5
4.7nF
Figure 19 – Recommended wiring for a PWM Low Side Output configuration
3901090333
Rev. 007
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Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
16.3. Analog Output Wiring with the MLX90333 in TSSOP Package
VDD1
ECU
V
DD1
GND1
GND1
GND1
C2
100nF
C31
100nF
C32
100nF
C1
100nF
V
V
V
DIG1
SS1
DD1
O
UT1_1
UT2_1
O
UT1_1
OUT2_1
O
C4
100nF
MLX90333
VDD2
C62
100nF
V
DD2
V
DD2
SS2
DIG2
O
UT2_2
GND2
10K
V
4.7nF
OUT1_2
ADC
GND2
V
C5
100nF
C61
100nF
GND2
O
UT1_2
O
UT2_2
Figure 20 – Recommended wiring for the MLX90333 in TSSOP16 package (dual die).
16.4. Serial Protocol
Generic schematics for single slave and dual slave applications are described.
C1
100nF
SPI Master
GND
Vdd
5 V
Vdd
Vss
_SS
MLX90333
_SS
C2
100nF
Test 0
Vdig
R4
SCLK
/SS
Test 1
MOSI
R5
SCLK
R3
R2
MISO
R1
MOSI
_MOSI
3.3V/5V
Figure 21 – MLX90333
−
Single Die
− Serial Protocol Mode
3901090333
Rev. 007
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Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
ꢂCtrlꢀ
Supplyꢀ
(V)ꢀ
5Vꢁ
5Vꢁ
3.3Vꢁ
5Vꢁ
3.3Vꢁ
Pullꢁupꢀ 90316ꢀ
Supplyꢀ Supplyꢀ R1ꢀ(ꢃ)ꢀ R2ꢀ(ꢃ)ꢀ R3ꢀ(ꢃ)ꢀ R4ꢀ(ꢃ)ꢀ R5ꢀ(ꢃ)ꢀ
MOSꢀ
Typeꢀ
ꢀ
ApplicationꢀTypeꢀ
(V)ꢀ
5Vꢁ
3.3Vꢁ
3.3Vꢁ
5Vꢁ
(V)ꢀ
5Vꢁ
5Vꢁ
5Vꢁ
5Vꢁ
5Vꢁ
5VꢁꢂCtrlꢁw/oꢁO.D.ꢁw/oꢁ3.3Vꢁ
5VꢁꢂCtrlꢁw/oꢁO.D.ꢁw/ꢁꢁꢁ3.3Vꢁ
100ꢁ
150ꢁ
150ꢁ
100ꢁ
150ꢁ
1000ꢁ 20,000ꢁ 1000ꢁ 20,000ꢁ BS170ꢁ
1000ꢁ
1000ꢁ
N/Aꢁ
N/Aꢁ
1000ꢁ 20,000ꢁ BS170ꢁ
3.3VꢁꢂCtrlꢁw/oꢁO.D.ꢁ(27)
ꢁ
N/Aꢁ
N/Aꢁ
BS170ꢁ
N/Aꢁ
N/Aꢁ
5VꢁꢂCtrlꢁw/ꢁO.D.ꢁw/oꢁ3.3Vꢁ(28)
3.3VꢁꢂCtrlꢁw/ꢁO.D.ꢁ
ꢁ
1000ꢁ 20,000ꢁ 1000ꢁ 20,000ꢁ
1000ꢁ N/Aꢁ N/Aꢁ N/Aꢁ
3.3Vꢁ
Table 3 - Resistor Values for Common Specific Applications
27ꢁꢂCtrlꢁw/ꢁO.D.ꢁ:ꢁMicroꢃcontrollerꢁwithꢁopenꢃdrainꢁcapabilityꢁ(forꢁinstanceꢁNECꢁV850ESꢁseries)ꢁ
28ꢁꢂCtrlꢁw/oꢁO.D.ꢁ:ꢁMicroꢃcontrollerꢁwithoutꢁopenꢃdrainꢁcapabilityꢁ(likeꢁTIꢁTMS320ꢁseriesꢁorꢁATMELꢁAVRꢁꢁ)
3901090333
Rev. 007
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Data Sheet
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MLX90333
Tria⊗is® Position Sensor
17. Standard information regarding manufacturability of Melexis
products with different soldering processes
Our products are classified and qualified regarding soldering technology, solderability and moisture
sensitivity level according to following test methods:
Reflow Soldering SMD’s (Surface Mount Devices)
•
•
IPC/JEDEC J-STD-020
Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices
(classification reflow profiles according to table 5-2)
EIA/JEDEC JESD22-A113
Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing
(reflow profiles according to table 2)
Wave Soldering SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices)
•
•
EN60749-20
Resistance of plastic- encapsulated SMD’s to combined effect of moisture and soldering heat
EIA/JEDEC JESD22-B106 and EN60749-15
Resistance to soldering temperature for through-hole mounted devices
Iron Soldering THD’s (Through Hole Devices)
•
EN60749-15
Resistance to soldering temperature for through-hole mounted devices
Solderability SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices)
•
EIA/JEDEC JESD22-B102 and EN60749-21
Solderability
For all soldering technologies deviating from above mentioned standard conditions (regarding peak
temperature, temperature gradient, temperature profile etc) additional classification and qualification tests
have to be agreed upon with Melexis.
The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance
of adhesive strength between device and board.
Melexis recommends reviewing on our web site the General Guidelines soldering recommendation
(http://www.melexis.com/Quality_soldering.aspx) as well as trim&form recommendations
(http://www.melexis.com/Assets/Trim-and-form-recommendations-5565.aspx).
Melexis is contributing to global environmental conservation by promoting lead free solutions. For more
information on qualifications of RoHS compliant products (RoHS = European directive on the Restriction
Of the use of certain Hazardous Substances) please visit the quality page on 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.
3901090333
Rev. 007
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Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
19. Package Information
19.1. SOIC8 - Package Dimensions
1.27 TYP
NOTES:
All dimensions are in millimeters (anlges in degrees).
* Dimension does not include mold flash, protrusions or
gate burrs (shall not exceed 0.15 per side).
** Dimension does not include interleads flash or protrusion
(shall not exceed 0.25 per side).
3.81 5.80
3.99** 6.20**
*** Dimension does not include dambar protrusion.
Allowable dambar protrusion shall be 0.08 mm total in
excess of the dimension at maximum material condition.
Dambar cannot be located on the lower radius of the foot.
4.80
4.98*
1.37
1.57
0.19
0.25
1.52
1.72
0°
8°
0.100
0.250
0.41
1.27
0.36
0.46***
ꢀ
19.2. SOIC8 - Pinout and Marking
Marking :
Part Number MLX90333 (3 digits)
Die Version (3 digits)
8
5
333 Bxx
TOP
333Bxx
M12345
Xy-E
M12345
Xy-E
Lot number: “M”+ 5 digits
Split lot number (Optional ) + “-E”
YY
WW
Bottom
Week Date code (2 digits)
Year Date code(2 digits)
1
4
3901090333
Rev. 007
Page 43 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
19.3. SOIC8 - IMC Positionning
CW
8
7
6
5
CCW
0.46 +/- 0.06
COS
1.25
1.65
1
2
3
4
1.96
2.26
SIN
3901090333
Rev. 007
Page 44 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
19.4. TSSOP16 - Package Dimensions
0.65 TYP
12O TYP
0.20 TYP
0.09 MIN
1.0 DIA
4.30
4.50**
6.4 TYP
0.09 MIN
1.0
0O
8O
0.50
0.75
12O TYP
1.0
1.0 TYP
0.85
0.95
4.90
5.10*
0.09
0.20
1.1 MAX
0.05
0.15
0.19
0.30***
NOTES:
All dimensions are in millimeters (anlges in degrees).
* Dimension does not include mold flash, protrusions or gate burrs (shall not exceed 0.15 per side).
** Dimension does not include interleads flash or protrusion (shall not exceed 0.25 per side).
*** Dimension does not include dambar protrusion. Allowable dambar protrusion shall be 0.08 mm total in excess of the dimension at
maximum material condition. Dambar cannot be located on the lower radius of the foot.
3901090333
Rev. 007
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Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
19.5. TSSOP16 - Pinout and Marking
Vdig_1
Vss_1
Test1_1
Out1_1/MOSI/MISO_1
Out2_1/SCLK_1
_SS_1
Vdd_1
Test0_1
_SS_2
Test0_2
Vdd_2
Out2_2/SCLK_2
Out1_2/MOSI/MISO_2
Test1_2
Marking :
Vss_2
Part Number MLX90316 (3 digits)
Die Version (3 digits)
Vdig_2
333
Bxx
Top
M12345
Xy-E
Lot number: “M” + 5 digits
Split lot number (Optional ) +“-E”
YY
WW
Bottom
Week Date code (2 digits)
Year Date code (2 digits)
3901090333
Rev. 007
Page 46 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
19.6. TSSOP16 - IMC Positionning
CW
COS 2
16
9
Die 1
Die 2
SIN 2
SIN 1
0.30 +/- 0.06
CCW
1.95
2.45
1
8
1.84
2.04
COS 1
2.76
2.96
3901090333
Rev. 007
Page 47 of 48
Data Sheet
Jul/2013
MLX90333
Tria⊗is® Position Sensor
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 NV. 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:
Phone: +32 1367 0495
E-mail: sales_europe@melexis.com
America:
Phone: +1 248 306 5400
E-mail: sales_usa@melexis.com
3901090333
Rev. 007
Page 48 of 48
Data Sheet
Jul/2013
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