MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 PAGE 1 OF 20
1. Features and Benefits
Programmable high speed Hall sensor
Wide bandwidth, short response time 8µs
Programmable linear transfer characteristic
Selectable analog ratiometric output
Measurement range from ±15mT to ±400mT
Thermometer output
17 bit ID number
Single die SOIC8 package RoHS compliant
Lead free component, suitable for lead free
soldering profile 260 °C
Low thermal Drift (Gain and Offset)
2. Application Examples
Current sensor applications
- Over current detection circuit
- Inverter Application HEV &EV
- AC/DC converters
- Battery management
Position sensor application
Ordering Code
Product
Code
Temperature Code
Package Code
Ordering Option
Code
Packing
form Code
Comment
MLX91207
L (-40°C to 150°C)
CAA-005
TU (Tube)
15-45mV/mT (25mV/mT)
MLX91207
L (-40°C to 150°C)
CAA-005
RE (Reel)
15-45mV/mT (25mV/mT)
MLX91207
L (-40°C to 150°C)
CAA-007
TU
5-20mV/mT (10mV/mT)
MLX91207
L (-40°C to 150°C)
CAA-007
RE
5-20mV/mT (10mV/mT)
MLX91207
L (-40°C to 150°C)
CAA-015(1)
TU
15-45mV/mT (25mV/mT)
MLX91207
L (-40°C to 150°C)
CAA-015(1)
RE
15-45mV/mT (25mV/mT)
(1) Ratiometry is disabled by default for this version
Ordering example : MLX91207-LDC-CAA-007-TU
3. Functional Diagram
Hall
Bias
Integrating
P2P
DIDO LPF
S&H
4-
Phase
Switch
Box
fs = 1MHz
Output
Buffer
Oscillator
1 MHz Clock
Generator
G = 15 … 239 G = 4
fs = 1MHz
Input data rate fi = 250kHz or 25kHz
Intermediate data rate
G = 0.4 … 1
Voltage
Regulator
&
Rev.Pol.
protection
fo = 250 kHz or 25 kHz
Output data rate
DIGITAL + EEPROM
10 bits
FG[9:0] FILTCODE[1:0]
2 bits
Fine Gain Bandwidth
RG[2:0]
3 bits
Rough Gain Voq adjust
Clamping
6 bits
3.3V core
5V ratiometric
output
Thermometer
TC1ST[6:0]
TC2ND_COLD[4:0] XA[11:0]
DAC
HallSensors
selection
Digital
Ratiometry
OUT
VDD
TEMPOUT
VSS
VDIG
3.3V
ana
3.3V
dig
TC2ND_HOT[4:0]
Sensitivity
trimming Offset
Compensation
OFFSETDRIFT_HOT[5:0]
OFFSETDRIFT_COLD[5:0]
PLATEPOL
Polarity
selection
12 bits
CLAMPLOW[2:0]
CLAMPHIGH[2:0]
Figure 1: Block diagram
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 PAGE 2 OF 20
4. General Description
The MLX91207 is a monolithic programmable hall sensor IC, which provides a high speed analog output signal
proportional to the external applied flux density. The sensor is ideally suitable for current sensing application and
features an additional thermometer output. Moreover, the sensor can be integrated in position sensing applications
where fast response time is required.
The transfer characteristics of the MLX91207 are fully programmable (offset, gain, clamping levels, diagnostic
functions…). The full analog chain features a fast response time and allows use of the sensor for applications where a
very fast response time < 10 sec is required.
In the typical application the sensor is used in combination with a ring shaped soft ferromagnetic core. The Hall-IC is
placed in a small air gap and the current conductor is passed through the inner part of the ferromagnetic ring. The
ferromagnetic ring concentrates and amplifies the magnetic flux on the Hall-Sensor IC which generates an output
voltage proportional to the current. Figure 2 shows a typical sensor application for a contact-less current
measurement.
Figure 2: Typical application of MLX91207
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 PAGE 3 OF 20
Table of Contents
1. Features and Benefits ....................................................................................................................................... 1
2. Application Examples ....................................................................................................................................... 1
3. Functional Diagram .......................................................................................................................................... 1
4. General Description .......................................................................................................................................... 2
Table of Contents ................................................................................................................................................. 3
5. Glossary of Terms ............................................................................................................................................. 4
6. Absolute Maximum Ratings .............................................................................................................................. 4
7. Pin Definitions and Descriptions ....................................................................................................................... 4
8. General Electrical Specifications ....................................................................................................................... 5
9. Magnetic specification ..................................................................................................................................... 6
10. Output specification ....................................................................................................................................... 6
10.1. Timing specification ................................................................................................................................ 6
10.2. Accuracy Specification ............................................................................................................................ 7
10.3. Remarks to the achievable accuracy ...................................................................................................... 7
11. Thermometer Output ..................................................................................................................................... 7
12. Programmable Items ...................................................................................................................................... 8
12.1. Customer Parameter Table ..................................................................................................................... 8
12.2. Description of Programmable Items....................................................................................................... 9
12.2.1. Output Mode Configuration (OUTMODE) ....................................................................................... 9
12.2.2. Output impedance mode (DIAGINFAULT) ....................................................................................... 9
12.2.3. Sensitivity Programming (ROUGHGAIN and FINEGAIN) .................................................................. 9
12.2.4. Offset Compensation VOQ (XA) ....................................................................................................... 9
12.2.5. Sensitivity polarity (PLATEPOL) ...................................................................................................... 10
12.2.6. Clamping Level Programming (CLAMPLOW, CLAMPHIGH) ........................................................... 10
12.2.7. Bandwidth and Filter Programming (FILTER) ................................................................................. 11
12.2.8. Power Limitation (OUTSLOPE) ....................................................................................................... 11
12.2.9. Output Ratiometry (RATIODIS) ...................................................................................................... 12
12.2.10. Sensitivity Temperature Drift Programming (TC1ST, TC2ND_COLD, TC2ND_HOT)..................... 12
12.2.11. Offset Temperature Drift Programming (OFFDRIFT_COLD, OFFDRIFT_HOT) .............................. 12
12.2.12. Product Identification (MLXID, CSTID) ......................................................................................... 12
13. Self-Diagnostic .............................................................................................................................................. 13
14. Applications Information .............................................................................................................................. 14
14.1. Current Measurement .......................................................................................................................... 14
14.2. Linear Position ...................................................................................................................................... 14
15. Recommended Application Diagrams ........................................................................................................... 15
15.1. Resistor and Capacitor Values .............................................................................................................. 15
15.2. Pull down resistor for diagnostic low ................................................................................................... 15
15.3. Pull up resistor for diagnostic high ....................................................................................................... 15
16. Standard information regarding manufacturability of Melexis products with different soldering processes. 16
17. ESD Precautions ........................................................................................................................................... 16
18. Package Information .................................................................................................................................... 17
18.1. SOIC8 Package Dimensions ................................................................................................................... 17
18.2. SOIC8 Pin Out and Marking .................................................................................................................. 17
19. Related documents and toolsPackage Information ....................................................................................... 19
19.1. Related documents ............................................................................................................................... 19
19.2. Related software .................................................................................................................................. 19
19.3. Related hardware ................................................................................................................................. 19
20. Contact ......................................................................................................................................................... 20
21. Disclaimer..................................................................................................................................................... 20
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 4 of 20
5. Glossary of Terms
Tesla
Units for the magnetic flux density, 1 mT = 10 Gauss
TC
Temperature Coefficient in ppm/deg C
NC
Not Connected
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
ASP
Analog Signal Processing
DSP
Digital Signal Processing
PTC
Programming Through Connector
6. Absolute Maximum Ratings
Parameter
Symbol
Value
Units
Positive Supply Voltage (overvoltage)
Vdd
+20
V
Reverse Supply Voltage Protection
-10
V
Positive Output Voltage
+10
+14 (200 s max, TA = +25°C)
V
Output Current
Iout
±300
mA
Reverse Output Voltage
-0.3
V
Reverse Output Current
-50
mA
Operating Ambient Temperature Range
TA
-40 to +125
°C
Storage Temperature Range
TS
-55 to +150
°C
Magnetic Flux Density
± 2
T
Table 1: Absolute maximum ratings
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum rated
conditions for extended periods may affect device reliability.
7. Pin Definitions and Descriptions
Pin №
Name
Type
Function
1
VDD
Supply
Supply Voltage
2
VSS
Ground
Supply Voltage
3
VDIG
Supply
Digital supply voltage, 3.3 V, internal regulated
4
MUST1
Digital
Test pin
5
OUT
Analog
Sensor output signal
6
TESTOUT
Digital
Test pin
7
MUST0
Digital
Test pin
8
TEMPOUT
Analog
Temperature sensor output
Table 2: Pin definition and description
It is recommended to connect the unused pins to the Ground (see section 14) for optimal EMC results.
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 5 of 20
8. General Electrical Specifications
Operating Parameters TA = -40oC to 125oC, Vdd = 5.0 V, Iout = +/-2mA, recommended application diagram in section 14
used, unless otherwise specified.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Nominal Supply Voltage
Vdd
4.5
5
5.5
V
Supply Current
Idd
Without output load
TA = -40oC to 150oC
9
12
mA
Output Current
Iout
-2
2
mA
Output Resistance
Vout = 50% Vdd, RL = 5kΩ
1
5
Output Capacitive Load
Cload
5
10
50
nF
Output Short Circuit Current
Ishort
Output shorted to Vdd -
Permanent
Not Destroyed
Output shorted to Vss -
Permanent
Not Destroyed
Leakage current
Ileak
High impedance mode (1)
5
uA
Output Voltage Swing (Linear
Range)
Vout_pd
pull down ≥ 10 kΩ
5
95
%Vdd
Vout_pu
pull up ≥ 10 kΩ
5
95
%Vdd
High-impedance mode levels(1)
Vout_HiZ_pu
pull-up RL ≤ 30 kΩ
97
%Vdd
Vout_HiZ_pd
pull-down RL ≤ 30 kΩ
3
%Vdd
BrokenVss Output Levels(1)
OUT with pull-down RL ≤ 10 kΩ
3
%Vdd
OUT with pull-up RL ≤ 30 kΩ (2)
97
%Vdd
BrokenVdd Output Levels(1)
OUT with pull-down RL ≤ 30 kΩ (2)
3
%Vdd
OUT with pull-up RL ≤ 30 kΩ (2)
97
%Vdd
Under-voltage detection (1) (4)
Vdd_uvd
Detected Voltage (L to H)
3.15
3.3
3.45
V
Vdd_uvh
Hysteresis
0.25
0.3
0.4
V
Over-voltage detection mode1 (1)
(4)
Vdd_ovd1
Detected Voltage (L to H)
7.9
9.5
V
Vdd_ovh1
Hysteresis
0.8
1.6
V
Over-voltage detection mode 2
(1) (4)
Vdd_ovd2
Detected Voltage (L to H)
6.7
7.6
V
Vdd_ovh2
Hysteresis
0.05
0.5
V
Clamped Output Level
Clamp_lo
Trimming Range
5 (3)
10
%Vdd
Clamp_hi
Trimming Range
90
95 (3)
%Vdd
Table 3: General electrical parameters
(1) Refer to chapter 13 Self-diagnostic, table 15.
(2) Valid for TEMPOUT with pull-up (min. 30kΩ), pull-down (min. 30kΩ) or not connected
(3) Factory programmed clamping level
(4) According to the figure below
Figure 3: Detected voltage and hysteresis definitions
Vout
Detected
Voltage
Vdd
Hysteresis
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 6 of 20
9. Magnetic specification
Operating Parameters TA = -40oC to 125oC, Vdd = 5.0 V, unless otherwise specified.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Magnetic field range
B
±15
±45
±450
mT
Linearity Error
NL
B = ± 45 mT (TA = 25 °C)
0.1
0.25
±%FS(1)
Programmable Sensitivity
S
15(2)
25(2)
40(2)
mV/mT
5(3)
10(3)
20(3)
mVm/T
Sensitivity programming
Resolution
Sres
0.1
%
Table 4: Magnetic specification
(1) By design
(2) MLX91207LDC-CAA-005 / MLX91207LDC-CAA-015
(3) MLX91207LDC-CAA-007
10. Output specification
10.1. Timing specification
Operating Parameters TA = -40oC to 125oC, Vdd = 5.0 V, unless otherwise specified
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Step Response Time(1)
Tresp
Voq ± 2 V
BW = 100 kHz – No filter
8
10
μs
Bandwidth
BW
Full Range (referenced to
externally applied field)
60
kHz
Power on Delay
TPOD
Vout =100% of FS
(BW = 100 Hz)
(BW = 1000 Hz)
(BW = 10 kHz)
(BW = 60 kHz – No filter)
0.35
0.25
100
10
ms
ms
ms
ms
Ratiometry Cut-off
Frequency
Fratio
250
Hz
Table 5: Timing specification of the analog output
(1) Time interval between when the applied magnetic field reaches 90% of it’s maximum value and when the
sensor’s output reaches 90% corresponding to this magnetic field
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 7 of 20
10.2. Accuracy Specification
Operating Parameters TA = -40oC to 125oC, Vdd = 5.0 V, S = 50 mV/mT, unless otherwise specified.
Specifications are defined for final test conditions: PLATEPOL=0 and RATIODIS=0.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Thermal Offset Drift
ΔTVoq
-0.4
+0.4
%Vdd
Thermal Sensitivity Drift
TC
-150
+150
ppm/°C
RMS Output noise
Nrms
S = 1 %Vdd/mT
(= 300 mV/mT @ Vdd=5V)
0.02
%Vdd
Voq Ratiometry
ΔVoq
Voq = 50% Vdd
ΔVdd = 10% Vdd
9.8
10.2
%
Sensitivity Ratiometry
ΔS
ΔVdd = 10% Vdd
B = ± 45 mT
9.8
10.2
%
Table 6: Accuracy specific parameters
10.3. Remarks to the achievable accuracy
The achievable target accuracy is dependent on the user’s end of line calibration. The resolution for the offset and
offset drift calibration is better than 0.1%Vdd. The trimming capability is higher than the measurement accuracy. An
end user calibration can increase the accuracy of the system.
11. Thermometer Output
The thermometer output voltage is in the range from 367mV to 2930mV for temperatures ranging from -40°C to
125°C. The pin shall be able to sustain a low impedance connection to maximum 14V. The output is not ratiometric.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Offset
T35
Output voltage with T = 35degC
3-bit adjustment
1.38
V
Slope
Tslope
13.5
mV/degC
Accuracy
Tacc
-5
5
degC
Load capacitor
CloadTherm
External through bonding wire
1
50
nF
Output current
Iouttherm
-0.1
+0.1
mA
Table 7: Thermometer output specifications
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 8 of 20
12. Programmable Items
12.1. Customer Parameter Table
Customers can re-program the parameters described in the table below by using the Melexis PTC-04 hardware and the
Product Specific Functions (PSF) libraries provided by Melexis. We recommend using the latest version of the PSF and
the latest version of the firmware with a communication speed of 10kbps (limited by a maximum output capacitor of
50nF). Software and fimrware are available on the softdist platform (see contact details on page 20 to request an
account).
Parameter
Bits
Factory
Setting
Comment
OUTMODE
1
1
Capacitive load selection
DIAGINFAULT
1
0
Output impedance setting
ROUGHGAIN
3
Trimmed
Rough gain preamplifier
FINEGAIN
10
Trimmed
Fine gain amplifier from 0.4 to 1.0
XA
12
Trimmed
Offset compensation VOQ
PLATEPOL(1)
1
0
Change of sensitivity sign
CLAMPLOW
3
Trimmed
Clamping low level
CLAMPHIGH
3
Trimmed
Clamping high level
FILTCODE
3
0
Analog filter
OUTSLOPE
2
3
Power limitation of the output driver on high frequencies
RATIODIS(1)
1
0(2) / 1(2)
Disable ratiometry between output signal and supply
TC1ST
7
Trimmed
Sensitivity temperature drift correction first order
TC2ND_COLD
5
Trimmed
Sensitivity temperature drift correction second order for cold
temperatures
TC2ND_HOT
5
Trimmed
Sensitivity temperature drift correction second order for hot
temperatures
OFFDRIFT_COLD
6
Trimmed
Offset temperature drift correction for cold temperatures
OFFDRIFT_HOT
6
Trimmed
Offset temperature drift correction for hot temperatures
MLXID
48
Programmed
MLX ID
CSTID
17
N/A
Customer ID
Table 8: Customer programmable parameters
(1) Changing these parameters has an impact on temperature calibration.
(2) 0 for CAA-005/CAA-007 and 1 for CAA-015
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 9 of 20
12.2. Description of Programmable Items
12.2.1. Output Mode Configuration (OUTMODE)
OUTMODE configures the output driver. For standalone applications (output of the sensor directly connected to a
cable) we recommend using OUTMODE 1 because of better EMC robustness.
If the sensor is integrated on a PCB a smaller load capacitor can be applied. The output capacitor has to be considered
in reference to OUTMODE.
OUTMODE
Output Driver
0
Integrated PCB mode,CL = 1..10nF (1) (2)
1
Standalone mode, CL = 5nF..50nF (1) (2)
Table 9: Output driver configurationmax.
(1) See section 14, CL = C4
(2) Factory setting: OUTMODE=1
12.2.2. Output impedance mode (DIAGINFAULT)
DIAGINFAULT sets the output impedance mode.
DIAGINFAULT
Output impedance
0
Low impedance mode (normal mode)
1
High impedance mode (diagnostic level)
12.2.3. Sensitivity Programming (ROUGHGAIN and FINEGAIN)
The sensitivity is programmable with 3 bits for ROUGHGAIN and 10 bits for FINEGAIN from 5 to 45 mV/mT.
Different option codes correspond to different sensitivity ranges:
Ordering
Option Code
Typical
Rough Gain
Typical
Sensitivity [mV/mT]
Minimum
Sensitivity [mV/mT]
Maximum
Sensitivity [mV/mT]
CAA-005 / CAA-015
3
25
15
45
CAA-007
1
10
5
20
In order to have a safety margin regarding mechanical tolerances Melexis recommends designing the application in
such a way that the typical sensitivity can be used with. If the target sensitivity of the module is out of the defined
range (see table above), the hardware and software tools provided by Melexis will not be able to properly calibrate the
sensor.
12.2.4. Offset Compensation VOQ (XA)
The offset is programmable with 12 bits in 1.25 mV steps over the full output range. This corresponds to a calibration
resolution of 0.025 %VDD.
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 10 of 20
12.2.5. Sensitivity polarity (PLATEPOL)
The polarity of the sensitivity can be programmed by changing the value of the PLATEPOL bit
PLATEPOL
Polarity
0
Positive
1
Negative
Please note that the factory calibration is done with PLATEPOL=0 . Melexis cannot guarantee the magnetic
specification if this parameter is changed during customer calibration.
12.2.6. Clamping Level Programming (CLAMPLOW, CLAMPHIGH)
The clamping levels limit the maximum and minimum output levels. The clamping levels are ratiometric (if RATIODIS =
0). The CLAMPLOW parameter adjusts the minimum out put voltage level from 5%...10%Vdd. The CLAMPHIGH
parameter sets the maximum output voltage level from 90...95%Vdd.
Diagnostic Band (High)
Linear Range
Diagnostic Band (Low)
Clamping High
Clamping Low
0 %
10 %
20 %
30 %
40 %
50 %
60 %
70 %
80 %
90 %
100 %
97 %
3 %
Output Level
95 %
90 %
10 %
5 %
CLAMPLOW
Minimal output
[%Vdd]
0
4.8
1
5.7
2
6.6
3
7.5
4
84
5
9.3
6
10.2
7
11.2
Table 11: Clamping low level table (typical values)
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 11 of 20
CLAMPHIGH
Maximal output
[%Vdd]
0
90.6
1
91.4
2
92.4
3
93.3
4
94.3
5
95.2
6
96.1
7
97
Table 12: Clamp high level table (typical values)
The clamping functionality can be disabled by programming CLAMPLOW=CLAMPHIGH=7.
The clamping levels calibrated during final test are:
- 6%Vdd (+/- 0.5%Vdd) for CLAMPING LOW
- 94%Vdd (+/- 0.5%Vdd) for CLAMPING HIGH
12.2.7. Bandwidth and Filter Programming (FILTER)
FILTCODE allows adjusting the internal bandwidth of the sensor. The power on delays is subjected to the FILTCODE
setting. For a low power consumption applications Melexis recommends FILTCODE=0 in a duty cyle mode.
FILTCODE
Typical Bandwidth [kHz]
Power on delays [ms]
0
60
0.25
1
9
0.35
2
40
0.28
3
2
0.73
4
9
0.5
5
0.9
1.45
6
4
0.82
7
0.2
5.2
Table 13: FILTCODE settings and typical bandwidth
12.2.8. Power Limitation (OUTSLOPE)
OUTSLOPE defines the power limit above which the output driver turns off to prevent damages to the IC. The power
dissipated in the IC output driver is measured by the IC itself. The power is obtained by multiplying continuously the
voltage across the conducting MOS driver by the output current Iout. When the power reaches the power limit, the
output driver is switched off and on such that, on average, the measured power is maintained equal to the power
limit. For OUTSLOPE = 3, the output driver is always enabled independently of the measured power.
Value
Power limitation [mW]
0
50
1
100
2
200
3
DISABLED
Table 14: Output power limitation
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 12 of 20
12.2.9. Output Ratiometry (RATIODIS)
RATIODIS allows enabling and disabling the ratiometry of the output in reference to the supply voltage by setting
respectively 0 and 1 in the EEPROM.
Please note that Melexis can not guarantee the magnetic specifications after changing the ratiometry factory setting.
Different product versions with different ratiometry settings are available:
MLX91207 version
Ratiometry
Default value
CAA-005
0 (Enabled)
CAA-007
CAA-015
1 (Disabled)
12.2.10. Sensitivity Temperature Drift Programming (TC1ST, TC2ND_COLD,
TC2ND_HOT)
First order sensitivity temperature drift can be trimmed from -2000 to 2000 ppm/K with TC1ST. The programming
resolution is 40 ppm/K. Second order sensitivity temperature drift can be trimmed from -6 to 6 ppm/K2 with TC2ND.
The programming resolution is 0.4/ppm/K2. The second order can also be seen as third order correction since cold and
hot sides are independently adjusted. The Linear Temperature Coefficient of the sensitivity will be trimmed to a target
value of 0 ppm/°C with a tolerance of +/- 150 ppm/°C by the 7 bits programming of the TC1ST.
12.2.11. Offset Temperature Drift Programming (OFFDRIFT_COLD, OFFDRIFT_HOT)
Offset temperature drift can be trimmed from -2.25 to +2.25 mV/K. The programming resolution is 0.075 mV/K. This
first order correction is done independently for temperatures over 25C and below 25C. The offset drift corrections are
ratiometric (if RATIODIS = 0). The parameter will be trimmed to 0 mV/°C by Melexis. The end user can adjust this
parameter after the assembly into their product in order to achieve highest accuracy.
12.2.12. Product Identification (MLXID, CSTID)
MLXID
A 48-bit MLX ID is used to guarantee MLX traceability (lotnumber, wafernumber, wafer position & PSF option code)
and is split up into a 3x16 bit register (MLXID1, MLXID2, MLXID3).
The programmed PSF option code is stored in MLXID3[2..0] and defines the gain setting used during the factory
calibration .
PSF Option Code (1)
MLXID3[2..0]
Ordering Option Code (2)
3
XXX-005
3
XXX-015
1
XXX-007
(1) The option code mentioned in all 91207 related documentation (application notes, PSF and User Interface)
refers to the PSF Option Code.
(2) The Ordering Option Code mentioned on the page 1 of this datasheet refers to the Ordering Code, which
defines the Chip version and the sensitivity range of the sensor
CSTID
A 17-bit customer ID is available to create a dedicated traceability system
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 13 of 20
13. Self-Diagnostic
The MLX91207 provides numerous self diagnostic features. Those features increase the robustness of the IC
functionality as it will prevent the IC from providing an erroneous output signal in case of internal or external failure
modes (“fail-safe”).
Error
Action
Effect on Outputs
Remarks
Calibration Data CRC Error (at power
up and in normal working mode)
Fault mode
High Impedance mode
(1)
Pull down resistive load => Diag
Low
Pull up resistive load => Diag High
Power On delay
High Impedance mode
(1)
1 ms max in high impedance
followed by settling
Undervoltage Mode (2)
IC reset (3)
High Impedance mode
(1)
300mV Hysteresis
Overvoltage detection Mode 1 (4)
(Threshold : min 7.9 V – max 9.5 V)
IC is switched
off (internal
supply)
High Impedance mode
(1)
Idd < 1mA
500mV to 1500mV Hysteresis
Overvoltage detection Mode 2 (5)
(Threshold : min 6.8V – max 7.5V)
IC reset (3)
High Impedance mode
(1)
100mV Hysteresis
Broken Vss
IC is switched
off
High Impedance (6)
With some restrictions on pull-
up/pull-down resistors on OUT and
TEMPOUT, see Chapter 8, page 5,
Table 3
Broken Vdd
IC is switched
off
High Impedance (7)
With some restrictions on pull-
up/pull-down resistors on OUT, see
Chapter 8, page 5, Table 3
Table 15: Self diagnostic
(1) Refer to Table 3: General electrical parameter, parameter High-impedance modes levels
(2) Refer to Table 3: General electrical parameter, parameter Under-voltage detection
(3) The internal supply is regulated but the digital sequencer (hall element spinning) is stopped
(4) Refer to Table 3: General electrical parameter, parameter Over-voltage detection mode 1
(5) Refer to Table 3: General electrical parameter, parameter Over-voltage detection mode 2
(6) Refer to Table 3: General electrical parameter, parameter BrokenVss Output Level
(7) Refer to Table 3: General electrical parameter, parameter BrokenVdd Output Level
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 14 of 20
14. Applications Information
14.1. Current Measurement
As a typical application the MLX91207 can be used as a non
intrusive current sensor. A current flowing through a
conductor generates a magnetic field around it, which is
direct proportional to the amount of current flow. The field
generated is rather small and hard to measure accurately
compared to the current, therefore other approaches are
needed in order to reach good solutions.
An easy and well established principle is the use of a ring
shaped concentrator (or core) made of soft ferromagnetic
material with a small gap. The current conductor is passed
through the ring and generates a magnetic field, which is
concentrated and directed through the gap. The sensor is
placed in the gap of the core and is able to measure the
increased magnetic flux density more reliably.
Figure 4: Current Measurement Application
14.2. Linear Position
An additional application suitable for the MLX91207 is the
detection of a relative linear position of a magnet-sensor
system. A permanent magnet generates a magnetic field in its
surrounding dependent on the magnetization type, the
magnet material and geometry. The MLX91207 should be
placed close to the magnet and the movement axis should be
chosen in a way to get a linear function between flux density
and movement. A possible solution would be a cylindrically
shaped, axially magnetized magnet with the movement axis
parallel to the sensor surface. The magnet provides a
magnetic field, which is linear for a certain movement range,
positive in one direction and negative in the other direction.
The output signal of the sensor is directly proportional to the
magnet position.
Figure 5: Linear Position Application
Zpos
XY
Z
+Xpos
-Xpos
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 15 of 20
15. Recommended Application Diagrams
15.1. Resistor and Capacitor Values
Part
Description
Value
Unit
C1
Supply capacitor, EMI, ESD
10 - 220
nF
C2
Regulator buffer capacitor, decoupling, EMI,
ESD
10 - 220
nF
C3
Decoupling, EMI, ESD
5 - 50
nF
C4
Decoupling, EMI, ESD
5 – 50 (1)
nF
R1
Pull up or pull down resistor
10 - 30
kΩ
Table16: Resistor and capacitor value
(1) When OUTMODE=0 (not recommended in the application), capacitor C4 should be 1nF or less.
15.2. Pull down resistor for diagnostic low
5
VDD
VSS
VDIG
TEST OUT
TEMPOUT
TEST
TEST 6
7
8
4
3
2
1
MLX91207
+5V
Temperature Output
Analog Output
GND
C3
C4 R1
C1
C2
Figure 6: Diagnostic low
15.3. Pull up resistor for diagnostic high
5
VDD
VSS
VDIG
TEST OUT
TEMPOUT
TEST
TEST 6
7
8
4
3
2
1
MLX91207
+5V
Temperature Output
Analog Output
GND
C3
C4
R1
C1
C2
Figure 7: Diagnostic high
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 16 of 20
16. 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 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
17. ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 17 of 20
18. Package Information
18.1. SOIC8 Package Dimensions
0.19
0.25
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.
5.84
6.20**
1.27 TYP
4.80
4.98*
1.55
1.73
0.127
0.250
1.40
1.55
0.35
0.49***
3.81
3.99**
0°
8°
0.41
0.89
Figure 8: Package dimensions
18.2. SOIC8 Pin Out and Marking
Marking :
Part Number MLX91207 (3 digits)
207
Die Version (2 digits)
123456 Lot number (6 digits)
Week Date code (2 digits)
Year Date code (2 digits)
YY WW
CA
VDD
TEST
TEST
TEMP OUT
1
VSS TEST
VDIG
OUT/PWM
8
4
5
207CA
123456
YYWW
Figure 9: Pin out and marking
Note: the option code is not marked on the package. It can be found by reading back the EEPROM (See chapter
11.2.12) and on the tape-on-reel label information
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 18 of 20
SOIC8 Hall Plate Positioning (preliminary)
1.85
2.15
2.35
2.55
0.46 +/- 0.06
Figure 10: Hall Plate positioning (preliminary)
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 19 of 20
19. Related documents and toolsPackage Information
19.1. Related documents
User Interface UI MLX91207 Description
Product Specific Functions PSF MLX91207 Description
PTC-04 Daughter Board DB-HALL-03 Data Sheet
The latest version of these documents is available on the Melexis Softdist platform. Please contact your local sales
office to request an account (see contact details on page 20).
Non intrusive current sensing with MLX91207 application note
MLX91207 for PDU solutions application note
Calibrating the MLX91206/MLX91207 application note
Shielding for Triaxis current sensors application note
The latest version of these documents is available on the MLX91207 page on the Melexis website:
http://www.melexis.com/Hall-Effect-Sensor-ICs/Special-Purpose-Hall-ICs/MLX91207-757.aspx
19.2. Related software
MLX91207 Firmware
MLX91207 Product Specific Functions (PSF)
MLX91207 User Interface
MLX PTC-04 Product Specific Functions
MLX PTC-04 User Interface
The latest version of these pieces of software is available on the Melexis Softdist platform. Please contact your local
sales office to request an account (see contact details on page 25).
19.3. Related hardware
PTC-04 Programmer for Melexis PTC devices
PTC-04 Daughter Board DB-HALL-03 for MLX91207
MLX91207
High Speed Hall Sensor IC
Datasheet
REVISION 16 - APRIL/12
39010091207 Page 20 of 20
20. Contact
For the latest version of this document, go to our website at www.melexis.com.
For additional information, please contact our Direct Sales team and get help for your specific needs:
Europe, Africa
Telephone: +32 13 67 04 95
Email : sales_europe@melexis.com
Americas
Telephone: +1 603 223 2362
Email : sales_usa@melexis.com
Asia
Email : sales_asia@melexis.com
21. Disclaimer
The information furnished by Melexis herein (“Information”) is believed to be correct and accurate. Melexis disclaims (i) any and all liability in connection with or arising
out of the furnishing, performance or use of the technical data or use of the product(s) as described herein (“Product”) (ii) any and all liability, including without limitation,
special, consequential or incidental damages, and (iii) any and all warranties, express, statutory, implied, or by description, including warranties of fitness for particular
purpose, non-infringement and merchantability. No obligation or liability shall arise or flow out of Melexis’ rendering of technical or other services.
The Information is provided "as is” and Melexis reserves the right to change the Information at any time and without notice. Therefore, before placing orders and/or prior
to designing the Product into a system, users or any third party should obtain the latest version of the relevant information to verify that the information being relied upon
is current.
Users or any third party must further determine the suitability of the Product for its application, including the level of re liability required and determine whether it is fit for
a particular purpose.
The Information is proprietary and/or confidential information of Melexis and the use thereof or anything described by the In formation does not grant, explicitly or
implicitly, to any party any patent rights, licenses, or any other intellectual property rights.
This document as well as the Product(s) may be subject to export control regulations. Please be aware that export might require a prior authorization from competent
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The Product(s) are intended for use in normal commercial applications. Unless otherwise agreed upon in writing, the Product(s) are not designed, authorized or warranted
to be suitable in applications requiring extended temperature range and/or unusual environmental requirements. High reliabili ty applications, such as medical life-support
or life-sustaining equipment are specifically not recommended by Melexis.
The Product(s) may not be used for the following applications subject to export control regulations: the development, product ion, processing, operation, maintenance,
storage, recognition or proliferation of 1) chemical, biological or nuclear weapons, or for the development, production, maintenance or storage of missiles for such
weapons: 2) civil firearms, including spare parts or ammunition for such arms; 3) defense related products, or other material for military use or for law enforcement; 4) any
applications that, alone or in combination with other goods, substances or organisms could cause serious harm to persons or g oods and that can be used as a means of
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The Products sold by Melexis are subject to the terms and conditions as specified in the Terms of Sale, which can be found at https://www.melexis.com/en/legal/terms-
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This document supersedes and replaces all prior information regarding the Product(s) and/or previous versions of this documen t.
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