MLX91205KDCAAL-003RE [MELEXIS]
IMC-HallCurrent Sensor (TriaxisTechnology);
| 型号： | MLX91205KDCAAL-003RE |
| 厂家： | 
Melexis Microelectronic Systems |
| 描述： | IMC-HallCurrent Sensor (TriaxisTechnology) |
| 文件： | 总14页 (文件大小：463K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
Features and Benefits
Applications Examples
Triaxis® Technology
AC and/or DC contact-less current
Very high sensitivity due to integrated
magnetic concentrator ( IMC-Hall®)
Sensitive to a magnetic field parallel to the
chip surface
measurement
Wideband Magnetic Field Measurement
Battery Management
AC/DC Converters
Linear output voltage proportional to a
magnetic field
Wideband: DC to 100kHz
Short response time 8μs
Low offset and offset drift
Very low noise
Motor Control
Solar Power Converter (MPPT)
Power Management
Isolated from current conductor
Surface mount SOIC8 package
Ordering Information
Product
Code
MLX91205
MLX91205
Temperature
Code
K (-40°C to 150°C)
K (-40°C to 150°C)
Package
Code
DC (SOIC)
DC (SOIC)
Ordering
Option Code
AAH-003
Packing
form Code
Sensitivity
(Typ.)
100 mV/mT
280 mV/mT
TU (Tube) / RE (Reel)
AAL-003
Ordering example: MLX91205KDC-AAH-003-TU
1 Functional diagram
2 General description
The new IMC-Hall® current sensor MLX91205 is a
single axis integrated magnetic sensor based on
the Hall Effect. It produces an analog linear, ratio-
metric output voltage proportional to the applied
magnetic field parallel with the chip surface.
VDD
GND
NC
Amplifier
™
Demodulator
Buffer
CO_OUT
A_OUT
Tria is
Modulator
The circuit is fabricated using a standard CMOS
process. The additional ferromagnetic layer
(IMC-Hall® = Integrated Magnetic Concentrator,
Triaxis® Technology) that is added in a simple
post-processing step, amplifies the magnetic field
and concentrates it on the Hall elements.
Therefore, the circuit features very high magnetic
sensitivity, low offset, and low noise.
Offset
Cancellation
Biasing
Unit
Calibration Unit
PV
PC
PD
The MLX91205 is ideally suited for current
sensing
in
automotive
and
industrial
environments.
There are 2 different product versions available.
The 91205HB features a linear magnetic field
range of ±25mT and the 91205LB features a linear
range of ±10mT. HB refers to a high magnetic
field, whereas LB refers to a low magnetic field
range.
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Page 1 of 14
Data Sheet
June/13
MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
Table of Contents
1 Functional diagram......................................................................................................... 1
2 General description ........................................................................................................ 1
3 Glossary of Terms .......................................................................................................... 3
4 Maximum ratings ............................................................................................................ 3
5 Pin definitions and descriptions.................................................................................... 3
6 MLX91205 General Electrical Specifications................................................................ 4
7 MLX91205 Sensor Specific Specifications ................................................................... 4
7.1 91205 LB: Low Field version 10mT (marking xxL) .......................................................................................................................... 4
8........................................................................................................................................... 4
8.1 91205HB: High Field version 25mT (marking xxH) ......................................................................................................................... 5
9 Detailed General Description......................................................................................... 6
10 Unique Features............................................................................................................ 6
11 Performance Graphs .................................................................................................... 7
11.1 Offset over Temperature .............................................................................................................................................................. 7
11.2 Sensitivity over Temperature........................................................................................................................................................ 7
12 Applications Information.............................................................................................. 8
12.1 Low current measurement up to ±2 A........................................................................................................................................... 8
12.2 Medium current up to ±30 A ......................................................................................................................................................... 8
12.3 High current measurement up to ±600 A ...................................................................................................................................... 8
12.4 Customer Calibration with MCU.................................................................................................................................................... 9
13 Application Diagram................................................................................................... 10
13.1 Direct Single Ended Output ........................................................................................................................................................ 10
13.2 Direct Differential Output ............................................................................................................................................................ 10
14 Standard information regarding manufacturability of Melexis products with
different soldering processes......................................................................................... 11
15 ESD Precautions......................................................................................................... 12
16 Package Information................................................................................................... 12
16.1 Package Dimensions.................................................................................................................................................................. 12
16.2 Pinout and marking .................................................................................................................................................................... 13
16.3 Hall plate positioning .................................................................................................................................................................. 13
17 Disclaimer.................................................................................................................... 14
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
3 Glossary of Terms
Gauss (G), Tesla (T): Magnetic flux density units where 1 mT = 10 G.
ADC: Analog-to-Digital Converter
TC: Sensitivity Temperature Coefficient (in ppm/Deg.C.).
TriaisTM : The Triais™ technology refers to the Melexis Hall technology that is based on both planar and
vertical (bulk & IMC) Hall plates. This technology allows the realization of Hall effect sensors able to sense
the flux density along the 3 axis (i.e. X, Y & Z) as well as position sensors able to sense the magnetic vector
over 360 degrees.
IMC: Integrated Magneto Concentrator. It concentrates the magnetic flux lines and bends them at the
extremity under the planar Hall plate. Furthermore, it can provide some magnetic gain factor.
4 Maximum ratings
Parameter
Units
Supply Voltage, VDD (overvoltage)
Supply Voltage, VDD (operating)
Reverse Voltage Protection
6V
5.5V
0V
Operating Temperature Range, TA
Storage Temperature Range, TS
Table 1: Absolute maximum ratings
-40 to +125 C
-40 to +150 C
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum
rated conditions for extended periods may affect device reliability.
5 Pin definitions and descriptions
Pin Number Pin Name Function
Pin 1
1
2
3
4
A_out
VDD
NC
Analog Output
Supply
B
PV
Factory Programming Pin (default VDD)
5
6
7
8
GND
PD
Supply Common
Factory Programming Pin (default GND)
Factory Programming Pin (default VDD)
Common Output (VDD/2)
PC
CO_out
Table 2: Pin description MLX91205
Magnetic sensitive direction
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
6 MLX91205 General Electrical Specifications
DC Operating Parameters TA = -40oC to +125oC, VDD = 5.000V (unless otherwise specified)
Parameter
Nominal Supply Voltage
Supply Current
Symbol
Vdd
Test Conditions
Min
4.5
Typ
5
11
Max
5.5
16
Units
V
Idd
Iout=0mA
mA
mV
mA
kΩ
Common Output
CO_Out
Iout
Referring to VDD/2
-50
-1
5
VDD/2 +50
1
Output Current
Output Load Resistance
Output Load Capacitance
Start-up cycle
Rload
Cload
Ts
1000
150
pF
μs
Table 3: Electrical specifications
7 MLX91205 Sensor Specific Specifications
7.1 91205 LB: Low Field version 10mT (marking xxL)
DC Operating Parameters TA = -40oC to 125oC, VDD = 5.000V, differential output (i.e. Vout = A_out -CO_out),
unloaded. Unless otherwise specified.
Parameter.
Symbol Test Conditions
Min
275
270
Typ
280
280
Max Units
285 V/T
290 V/T
ppm/°C
Magnetic Sensitivity
Magnetic Sensitivity over Temp.
S(1)
T=25°C, B = BL
T= -40, 25, 125°C;
See also below 10.2
(1)
ST
Thermal Sensitivity Drift
Offset Voltage
TC
Voff
T= 25°C
T= 25°C
<+/-200
0
-20
-50
-7.5
20
mV
T= -40, 25, 125°C;
See also below 11.1
Offset Voltage over Temperature VoffT
0
50
mV
Linear Magnetic Field Range
Fullscale Magnetic Field Range
Non Linearity
BL
7.5
mV
BFS
NL
±10
±0.5
<±10
mT
B<BL
%
Hysteresis
Hyst
B<100mT
μT
Max. Output Voltage Swing
Response Time
Vout,max B>BFS
tr
5
95
%VDD
μs
8
Bandwidth (-3 dB) DC to
Spectral Noise Density
BW
RLoad>1MΩ; CLoad<10pF
100
<125
kHz
ΔBnoise f=10Hz to 10kHz
nT/sqrt(Hz)
Table 4: Sensor specifications 10mT version (low-field version)
Note 1: Ratiometric (proportional to Vdd). The absolute accuracy on magnetic sensitivity trimming is +/- 2%.
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
8.1 91205HB: High Field version 25mT (marking xxH)
DC Operating Parameters TA = -40oC to 125oC, VDD = 5.000V, differential output (i.e. Vout = A_out -CO_out),
unloaded. Unless otherwise specified.
Parameter.
Magnetic Sensitivity
Symbol Test Conditions
Min
97.5
Typ
100
Max Units
102.5 V/T
S(1)
T=25°C, B = BL
T= -40, 25, 125°C;
See also below 10.2
(1)
Magnetic Sensitivity over Temp.
ST
95
100
105 V/T
ppm/°C
Thermal Sensitivity Drift
Offset Voltage
TC
Voff
T= 25°C
T= 25°C
<+/-200
0
-20
-50
-20
20
50
20
mV
T= -40, 25, 125°C;
See also below 11.1
Offset Voltage over Temperature VoffT
0
mV
Linear Magnetic Field Range
Fullscale Magnetic Field Range
Non Linearity
BL
mV
mT
BFS
NL
-25.. 25
±0.5
B<BL
Hysteresis
Hyst
B<100mT
<±20
μT
Max. Output Voltage Swing
Response Time
Vout,max B>BFS
Tr
5
95
%VDD
μs
8
Bandwidth (-3 dB) DC to
Spectral Noise Density
BW
RLoad>1MΩ; CLoad<10pF
100
<125
kHz
ΔBnoise f=10Hz to 10kHz
nT/sqrt(Hz)
Table 5: Sensor specifications 25mT version (high-field version)
Note 1: Ratiometric (proportional to Vdd). The absolute accuracy on magnetic sensitivity trimming is +/- 2%.
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
9 Detailed General Description
Melexis IMC current sensor MLX91205 is a single axis magnetic field sensor based on the Hall Effect. It is an
integrated combination of a CMOS Hall circuit and a thin ferromagnetic concentrator. The CMOS circuit
contains two pairs of Hall elements for its sensitivity direction parallel with the chip surface. The ferromagnetic
concentrator amplifies the external magnetic field and concentrates it on the Hall elements.
The MLX91205 is ideally suited for current sensing in harsh automotive and industrial environments for both
AC and DC currents. It produces an analog, linear, ratio-metric output voltage proportional to the applied
magnetic field parallel with the chip surface.
The circuit is fabricated using a standard CMOS process and the ferromagnetic layer is added in a simple
post-processing step. The monolithic device incorporates Hall elements, offset cancellation circuitry, current
source, chopper stabilized amplification circuitry, parameter programming capability.
By dynamic offset cancellation any offset voltage caused by temperature variations, packaging stress or
others is strongly reduced. As a result, the device has an extremely stable signal output, is immune to
mechanical stress and is virtually immune to temperature cycling.
Therefore, the circuit features a wide application range and very high accuracy.
10 Unique Features
Different to other linear Hall sensors the MLX91205 measures the magnetic field parallel with the chip
surface.
Therefore this sensor is ideally used as an open-loop current sensor for PCB mounting. It features small size
application design and a simple construction for various current ranges.
Due to short Response time and high Bandwidth this sensor is suitable for high speed current
measurement in a contactless, high current, high voltage setup.
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
11 Performance Graphs
11.1 Offset over Temperature
The product is calibrated at room temperature and tested at -40°C, 25°C and +125°C. The Offset
performance 0V ±20mV at room temperature and is 0V ±50mV over the temperature range from -40 to 125°
C. The typical temperature drift is < 0mV/°C ± 0.3 mV/°C
Offset
[mV]
60
[%VDD]
1.2
40
0.8
20
0.4
Temperature [°C]
-50
-25
25
50
75
100
125
-20
-40
-60
-0.4
-0.8
-1.2
11.2 Sensitivity over Temperature
The product is calibrated at room temperature and tested at -40°C, 25°C and +125°C. The Sensitivity
performance for the low field version is 280V/T ±5 V/T at room temperature and 280V/T ±10 V/T over the
temperature range from -40 to 125° C. Typical temperature drift is < 200 ppm/ °C.
Sensitivity
[V/T]
290
[%]
103.6
285
101.8
Temperature [°C]
-50
-25
25
50
75
100
125
275
270
98.2
96.4
The corresponding sensitivity performance for the high field version is 100V/T ±2.5 V/T at room temperature
and 100V/T ±5 V/T over the temperature range from -40 to 125° C.
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
12 Applications Information
12.1 Low current measurement up to ±2 A
Low currents can be measured with the MLX91205 by
increasing the magnetic field via a coil around the sensor.
The sensitivity (output voltage vs. current in coil) of the
measurement will depend on the size of coil and number
of turns. Additional sensitivity and increased immunity to
external fields can be gained by adding a shield around
the coil. The bobbin provides very high dielectric isolation
making this a suitable solution for high voltage power
supplies with relative low currents. The output should be
scaled to obtain the maximum voltage for the highest
current to be measured in order to obtain the best
accuracy and resolution.
12.2 Medium current up to ±30 A
With a single conductor located on the PCB, currents in
the range of up to 30 amps can be measured. The sizing
of the PCB trace needs to take into account the current
handling capability and the total power dissipation. The
PCB trace needs to be thick enough and wide enough to
handle the RMS current continuously.
The differential output voltage for this configuration can be
approximated by the following equation:
Vout = typ. 35 - 40 mV/A * I
For a current level of 30 A, the output will be approximately
1050 mV.
12.3 High current measurement up to ±600 A
Another method of measuring high currents on PCB’s is to
use a large thick gauge copper trace capable of carrying
the current on the opposite side of the PCB. The
MLX91205 should be located near the centre of the trace,
however because the trace is wide, the output is less
sensitive to location on the PCB. This configuration also
has less sensitivity due to the distance and width of the
conductor.
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
12.4 Customer Calibration with MCU
In many applications one measures the output voltage of the 91205 with a microcontroller. The current-
sensor-system accuracy can be significantly increased by customer calibration of the system after
assembling the 91205 in the application. By applying a known current i.e.100 Amperes, one can calibrate by
means of the microcontroller the output voltage to the exact value i.e. 2.000V at 100 Amps. By doing so, the
offset and sensitivity can be calibrated simply at a certain temperature.
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
13 Application Diagram
13.1 Direct Single Ended Output
For reliable operation within the specifications the sensor must be connected as follows:
+5V
MLX91205
Full Scale Output =
2
7
4
6
5
2.5 +/-2.25 Volts
Vdd
PC
1
8
3
A_Out
CO_Out
NC
Vout = A_out
PV
PD
100 nF*
1 nF
1 nF
GND
GND
GND
GND
GND
GND
* if the supply voltage is disturbed by EMI it can be useful to place a second capacitor (100pF ceramic)
parallel to the 100nF capacitor.
13.2 Direct Differential Output
For reliable operation within the specifications the sensor must be connected as follows:
+5V
MLX91205
Full Scale Output =
2
7
4
6
5
0 +/-2.25 Volts
Vdd
PC
1
8
3
A_Out
CO_Out
NC
Vout =
A_out - CO_out
PV
PD
100 nF*
1 nF
1 nF
GND
GND
GND
GND
GND
* if the supply voltage is disturbed by EMI it can be useful to place a second capacitor (100pF ceramic)
parallel to the 100nF capacitor.
3901091205
Rev 012
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Data Sheet
June/13
MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
14 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
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
15 ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products. A
well designed (capacitors close to pins and low resistive ground layout) PCB layout will help to improve ESD
robustness.
16 Package Information
16.1 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).
*** 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.
3.81
3.99** 6.20**
5.84
4.80
4.98*
1.40
1.55
0.19
0.25
1.55
1.73
0°
8°
0.127
0.250
0.41
0.89
0.35
0.49***
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
16.2 Pinout and marking
Top Marking :
Part Number MLX91205 (5 digits)
8
5
91205
Die Version (2 digits)
X = L for low field version
X = H for high field version
ABX
12345
91205
ABX
Lot number (5 digits)
12345
Bottom Marking :
YY
WW
1
4
Week Date code (2 digits)
Year Date code (2 digits)
16.3 Hall plate positioning
0.46 +/- 0.06
1.85
2.15
2.35
2.55
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Data Sheet
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MLX91205
IMC-Hall®Current Sensor (Triaxis®Technology)
17 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.
© 2012 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
ISO/TS 16949 and ISO14001 Certified
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Data Sheet
June/13
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