MLX90316 Rotary Position Sensor IC
Datasheet
Features and Benefits
Absolute Rotary Position Sensor IC
Simple & Robust Magnetic Design
Tria⊗is® Hall Technology
Programmable Angular Range up to 360
Degrees
Programmable Linear Transfer Characteristic
Selectable Analog (Ratiometric), PWM, Serial
Protocol
12 bit Angular Resolution - 10 bit Angular
Thermal Accuracy
40 bit ID Number
Single Die – SOIC-8 Package RoHS Compliant
Dual Die (Full Redundant) – TSSOP-16 Package
RoHS Compliant
Description
The MLX90316 is a Tria⊗is® Rotary Position
Sensor providing the absolute angular position of
a small dipole magnet rotating above the device
surface (end-of-shaft magnet).
Thanks to an Integrated Magneto-Concentrator
(IMC) on its surface, the monolithic device senses,
in a contactless fashion, the horizontal component
of the applied magnetic flux density.
This unique sensing principle applied to a rotary
position sensor results into an impressive
robustness of the angular position over the
mechanical (airgap, off-axis) tolerances.
The rotation of this horizontal component is
sensed over a wide range (up to 360 Deg. -
complete revolution) and processed by the on-
chip DSP (Digital Signal Processing) to ultimately
report the absolute angular position of the
magnet either as a ratiometric analog output or as
PWM (Pulse-Width Modulation) signal or as a 14-
bit data accessible through a 3-pin SPI (serial
interface) channel.
The output transfer characteristic is fully
programmable (e.g. offset, gain, clamping levels,
linearity, thermal drift, filtering, range...) to match
any specific requirement through end-of-line
calibration. The Melexis programming unit PTC-04
communicates and calibrates the device
exclusively through the connector terminals (V
DD
-
V
SS
-O
UT
).
V
DD
V
DIG
SOIC-8
TSSOP-16
Applications
Absolute Rotary Position Sensor
Steering Wheel Position Sensor
Pedal Position Sensor
Motor-shaft Position Sensor
Throttle Position Sensor
Float-Level Sensor
Ride Height Position Sensor
Non-Contacting Potentiometer
Prot.
3V3
Reg
DSP
MUX
Triaxis
®
RAM
V
X
V
Y
EEPROM
Output Stage
12 bit Analog
OUT1
MOSI/MISO
OUT2
SCLK
Switch Out
/SS
G
ADC
µC
12 bit PWM
SPI
ROM - Firmware
V
SS
MLX90316 Rotary Position Sensor IC
Datasheet
Contents
Features and Benefits................................................................................................................................... 1
Applications .................................................................................................................................................. 1
Description ................................................................................................................................................... 1
1. Ordering Information ............................................................................................................................... 5
2. Functional Diagram .................................................................................................................................. 6
3. Glossary of Terms ..................................................................................................................................... 7
4. Pinout ....................................................................................................................................................... 8
5. Absolute Maximum Ratings ...................................................................................................................... 9
6. Electrical Specification ............................................................................................................................ 10
7. Isolation Specification............................................................................................................................. 12
8. Timing Specification................................................................................................................................ 12
9. Accuracy Specification ............................................................................................................................ 13
10. Magnetic Specification ......................................................................................................................... 14
11. CPU & Memory Specification ............................................................................................................... 14
12. End-User Programmable Items ............................................................................................................ 15
13. Description of End-User Programmable Items ..................................................................................... 17
13.1. Output Mode ............................................................................................................................... 17
13.1.1. Analog Output Mode ............................................................................................................. 17
13.1.2. PWM Output Mode ............................................................................................................... 18
13.1.3. Serial Protocol Output Mode ................................................................................................. 18
13.1.4. Switch Out .............................................................................................................................. 19
13.2. Output Transfer Characteristic .................................................................................................... 19
13.2.1. CLOCKWISE Parameter .......................................................................................................... 20
13.2.2. Discontinuity Point (or Zero Degree Point) ........................................................................... 20
13.2.3. LNR Parameters ..................................................................................................................... 21
13.2.4. CLAMPING Parameters .......................................................................................................... 21
13.2.5. DEADZONE Parameter ........................................................................................................... 22
13.2.6. Output 2 (MLX90316xDC-BCS ONLY) .................................................................................... 22
13.3. Identification ................................................................................................................................ 23
13.4. Sensor Front-End ......................................................................................................................... 23
13.4.1. HIGHSPEED Parameter........................................................................................................... 23
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MLX90316 Rotary Position Sensor IC
Datasheet
13.4.2. ARGC, AUTO_RG, RoughGain and FORCECRA75 Parameters ............................................... 24
13.4.3. RGThresL, RGThresH Parameters .......................................................................................... 24
13.5. FILTER ........................................................................................................................................... 25
13.5.1. Hysteresis Filter ...................................................................................................................... 25
13.5.2. FIR Filters ................................................................................................................................ 25
13.5.3. IIR Filters ................................................................................................................................. 27
13.6. Programmable Diagnostic Settings.............................................................................................. 28
13.6.1. RESONFAULT Parameter ........................................................................................................ 28
13.6.2. EEHAMHOLE Parameter ........................................................................................................ 28
13.7. Lock .............................................................................................................................................. 28
13.7.1. MLXLOCK Parameter .............................................................................................................. 28
13.7.2. LOCK Parameter ..................................................................................................................... 28
14. Self Diagnostic ...................................................................................................................................... 29
15. Serial Protocol ...................................................................................................................................... 32
15.1. Introduction ................................................................................................................................. 32
15.2. SERIAL PROTOCOL Mode ............................................................................................................. 32
15.3. MOSI (Master Out Slave In) ......................................................................................................... 32
15.4. MISO (Master In Slave Out) ......................................................................................................... 32
15.5. /SS (Slave Select) .......................................................................................................................... 32
15.6. Master Start-Up ........................................................................................................................... 32
15.7. Slave Start-Up .............................................................................................................................. 33
15.8. Timing ........................................................................................................................................... 33
15.9. Slave Reset ................................................................................................................................... 34
15.10. Frame Layer ............................................................................................................................... 34
15.10.1. Command Device Mechanism ............................................................................................. 34
15.10.2. Data Frame Structure .......................................................................................................... 34
15.10.3. Timing ................................................................................................................................... 35
15.10.4. Data Structure ...................................................................................................................... 35
15.10.5. Angle Calculation ................................................................................................................. 36
15.10.6. Error Handling ...................................................................................................................... 36
16. Recommended Application Diagrams .................................................................................................. 37
16.1. Analog Output Wiring in SOIC-8 Package .................................................................................... 37
16.2. Analog Output Wiring in TSSOP-16 Package ............................................................................... 38
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MLX90316 Rotary Position Sensor IC
Datasheet
16.3. PWM Low Side Output Wiring ..................................................................................................... 38
16.4. Serial Protocol .............................................................................................................................. 39
16.4.1. SPI Version – Single Die .......................................................................................................... 39
16.4.2. SPI Version – Dual Die ............................................................................................................ 40
16.4.3. Non SPI Version (Standard Version) ...................................................................................... 41
17. Standard information regarding manufacturability of Melexis products with different soldering
processes ............................................................................................................................................... 42
18. ESD Precautions.................................................................................................................................... 42
19. Package Information............................................................................................................................. 43
19.1. SOIC-8 - Package Dimensions ...................................................................................................... 43
19.2. SOIC-8 - Pinout and Marking ....................................................................................................... 43
19.3. SOIC-8 - IMC Positionning ............................................................................................................ 44
19.4. TSSOP-16 - Package Dimensions ................................................................................................. 45
19.5. TSSOP-16 - Pinout and Marking................................................................................................... 46
19.6. TSSOP-16 - IMC Positionning ....................................................................................................... 46
20. Disclaimer ............................................................................................................................................. 48
21. Contact ................................................................................................................................................. 48
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MLX90316 Rotary Position Sensor IC
Datasheet
1. Ordering Information
Product Code
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
MLX90316
Temperature Code
S
E
K
L
E
K
L
K
K
K
K
E
K
L
E
K
L
L
L
L
Package Code
DC
DC
DC
DC
GO
GO
GO
DC
GO
DC
GO
DC
DC
DC
GO
GO
GO
GO
DC
DC
Option Code
BCG-000
BCG-000
BCG-000
BCG-000
BCG-000
BCG-000
BCG-000
BCG-200
BCG-200
BCG-300
BCG-300
BDG-100
BDG-100
BDG-100
BDG-100
BDG-100
BDG-100
BDG-102
BDG-102
BCS-000
Packing Form Code
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
RE
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