MLX91209
Hall Current Sensor IC in VA package
1. Features and Benefits
Programmable high speed current sensor
Programmable linear transfer characteristic
Selectable analog ratiometric output
Measurement range from 15 to 450mT
Single die VA package RoHS compliant
Wideband: DC to 200kHz
Short response time
Lead free component, suitable for lead free
soldering profile 260°C (target), MSL1
AEC-Q100 Automotive Qualified
2. Application Examples
Inverter applications in HEV and EV
BLDC motor current monitoring
AC/DC converters
Over current detection circuit
3. General Description
The MLX91209 is a monolithic programmable Hall sensor IC featuring the planar Hall technology, which is
sensitive to the flux density applied orthogonally to the IC surface. The sensor provides an output signal
proportional to the applied magnetic flux density and is preferably suited for current measurement.
The transfer characteristic of the MLX91209 is programmable (offset, gain). The linear analog output is designed
for applications where a very fast response is required, such as inverter applications.
In a 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 ring concentrates and amplifies the magnetic flux on the Hall sensor IC, which generates an output voltage
proportional to the current flowing in the conductor.
4. Ordering Information
Product
MLX91209
MLX91209
MLX91209
MLX91209
Temperature
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
L (-40°C to 150°C)
Package
VA
VA
VA
VA
Option Code
CAA - 000
CAA - 001
CAA - 002
CAA - 003
Packing Form
RE
RE
RE
RE
Default Sensitivity
mV/mT
50
15
7.3
19
Table 1: Ordering Information
Legend:
Temperature Code:
Package Code:
Option Code:
Packing Form:
Ordering Example:
390109120901
Rev.010
L: from -40°C to 150°C
“VA” for SIP 4L (single in-line package)
CAA: Sensitivity Range 5-150mV/mT
“RE” for Reel
MLX91209LVA-CAA-000-RE
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Hall Current Sensor IC in VA package
Table 2: Legend for Ordering Information
5. Functional Diagram
Figure 1: Block Diagram
6. Glossary of Terms
Terms
Tesla
TC
NC
ADC
DAC
LSB
MSB
DNL
INL
IMC
PTC
Table 3: Glossary of Terms
Definition
Units for the magnetic flux density, 1 mT = 10 Gauss
Temperature Coefficient in ppm/deg C
Not Connected
Analog to Digital Converter
Digital to Analog Converter
Least Significant Bit
Most Significant Bit
Differential Non Linearity
Integral Non Linearity
Integrated Magneto Concentrator (IMC®)
Programming Through Connector
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Hall Current Sensor IC in VA package
Contents
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1. Features and Benefits.......................................................................................................................................1
2. Application Examples .......................................................................................................................................1
.......................................................................................................................................
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................................................................................................................................
..........................................................................................................
3. General Description..........................................................................................................................................1
................................................................................................................................
.......................................................................................................
4. Ordering Information .......................................................................................................................................1
Functional
................................................................................................................................
..........................................................................................................
5. Functional Diagram ..........................................................................................................................................2
................................................................................................................................
.............................................................................................................
6. Glossary of Terms .............................................................................................................................................2
................................................................................................
7. Absolute Maximum Ratings ..............................................................................................................................4
..............................................................................................
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8. Pin Definitions and Descriptions .......................................................................................................................4
.......................................................................................................................
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9. General Electrical Specifications .......................................................................................................................5
.......................................................................................................................
................................................................................................................................
...................................................................................................
10. Magnetic specification ...................................................................................................................................5
10.1. Sensor active measurement direction....................................................................................................6
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11. Analog output specification ............................................................................................................................6
11.1. Timing specification ................................................................................................................................6
11.2. Accuracy specification ............................................................................................................................ 7
11.3. Remarks to the achievable accuracy ......................................................................................................7
................................................................................................................................
......................................................................................................
12. Programmable items ......................................................................................................................................8
12.1. Parameter table ......................................................................................................................................8
12.2. Sensitivity programming (RG, FG) ..........................................................................................................8
12.3. Offset / output quiescent voltage programming (VOQ) ........................................................................8
12.4. Output ratiometry (ENRATIO) ................................................................................................................9
12.5. Sensitivity temperature drift programming (TC1, TC2COLD, TC2HOT) ..................................................9
12.6. Offset temperature drift programming (OFFDR2C, OFFDR2H) ..............................................................9
12.7. Noise filter (NOISEFILT)...........................................................................................................................9
12.8. Identification code (ID) ...........................................................................................................................9
Self-
..............................................................................................................................................
13. Self-diagnostic ..............................................................................................................................................10
................................................................................................
...........................................................................................................
................................................................
14. Recommended Application Diagrams ...........................................................................................................11
14.1. Resistor and capacitor values ...............................................................................................................11
14.2. Pull down resistor for diagnostic low ...................................................................................................11
................................................................................................................................
.....................................................................................................
15. Typical performance..................................................................................................................................... 12
processes.
16. Standard information regarding manufacturability of Melexis products with different soldering processes. 13
17. ESD Precautions ........................................................................................................................................... 13
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18. FAQ ..............................................................................................................................................................14
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19. Package Information .................................................................................................................................... 14
19.1. VA / SIP 4L (single in-line package) .......................................................................................................14
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20. Contact.........................................................................................................................................................15
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Disclaimer.....................................................................................................................................................
................................................................................................................................
21. Disclaimer..................................................................................................................................................... 15
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7. Absolute Maximum Ratings
Parameter
Positive Supply Voltage (overvoltage)
Reverse Supply Voltage Protection
Positive Output Voltage
(1)
Output Current
Reverse Output Voltage
Reverse Output Current
Package Thermal Resistance
Operating Ambient Temperature Range
Storage Temperature Range
Magnetic Flux Density
Table 4: Absolute maximum ratings
Symbol
Vdd
Value
+10
-0.3
+10
Units
V
V
V
mA
V
mA
°C/W
°C
°C
T
Iout
±70
-0.3
-50
Rth
T
A
T
S
105
-40 to +150
-55 to +165
infinite
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute
maximum rated conditions for extended periods may affect device reliability.
(1) Valid for supply=10V or supply-pin floating.
8. Pin Definitions and Descriptions
Pin №
1
2
3
4
Name
VDD
OUT
TEST/MUST
VSS
Type
Supply
Analog
Digital
Ground
Function
Supply Voltage
Current Sensor Output
Test and Factory Calibration
Supply Voltage
Table 5: Pin definitions and descriptions
It is recommended to connect the unused pins to the Ground for optimal EMC results.
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9. General Electrical Specifications
Operating Parameters: T
A
= -40°C to 125°C, Vdd = 4.5V to 5.5V, Iout = -2mA to 2mA, recommended
application diagram, unless otherwise specified. Mentioned component values can have a ±20%
tolerance.
Parameter
Nominal Supply Voltage
Supply Current
DC Load Current
Maximum Output Current
(driving capability)
Output Resistance
Output Capacitive Load
Output Resistive Load
(pull-down resistor)
Output Short Circuit Current
(Permanent)
Output Leakage current
Output Voltage Swing
(Linear Range)
(1)
High-impedance mode levels
(2)
Under-voltage detection
Ratiometry fault detection
Over-voltage detection
(2)
Symbol
Vdd
Idd
I
out
I
max
C
load
R
load
I
short
I
leak
V
out_pd
V
out_HiZ_pd
V
dd_uvd
V
dd_uvh
V
ratio_d
V
ratio_h
V
dd_ovd2
V
dd_ovh2
Min
4.5
No output load, application mode, 7
T
A
= -40°C to 150°C
R
load
in range [6kΩ, 100kΩ]
-2
Inside this range, output voltage
-2
reaches 3 and 97%Vdd
Vout = 50% Vdd, R
L
= 10kΩ
Capacitive load for the stability of
the output amplifier
Output resistive load for high
6
linearity
Output shorted to Vdd
35
Output shorted to Vss
35
(1)
High impedance mode
0.5
T
A
= 150°C
pull-down ≥ 10 kΩ
10
pull-down R
L
≤ 25 kΩ, T≤125°C
Low to High Voltage
Hysteresis
Low to High Voltage
Hysteresis
Low to High Voltage
Hysteresis
Vout
Hysteresis
Test Conditions
Typ
5
12
Max
5.5
14
2
2
Units
V
mA
mA
mA
Ω
nF
kΩ
1
5
10
1.5
180
180
20
90
5
3.45
0.4
4.4
0.5
7.6
0.7
mA
mA
uA
%Vdd
%Vdd
V
V
V
V
V
V
3.15
0.25
4
0.05
6.7
0.05
3.3
0.3
Table 6: General electrical parameters
(1) Refer to section
Self-diagnostic,
Table 11.
(2) According to the following diagram:
Detected
Voltage
Vdd
10. Magnetic specification
Operating Parameters T
A
= -40°C to 125°C, Vdd = 4.5V to 5.5V, unless otherwise specified.
Parameter
Magnetic field range
Linearity Error
Programmable Sensitivity
Sensitivity programming
Resolution
Table 7: Magnetic specification
Symbol
B
NL
S
Sres
Test Conditions / Comments
Vdd in range [4.5V, 5.5V]
Vout in [10%Vdd, 90%Vdd]
Min
±15
-0.4
5
0.1
Typ
Max
±450
+0.4
150
Units
mT
%FS
mV/mT
%
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