mlx91205 Melexis Company, mlx91205 Datasheet

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mlx91205

Manufacturer Part Number
mlx91205
Description
Imc Current Sensor Triaxis? Technology
Manufacturer
Melexis Company
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
mlx91205KDC-AAH-003-RE
Manufacturer:
MELEXIS/迈来芯
Quantity:
20 000
Part Number:
mlx91205KDC-AAL-003-RE
Manufacturer:
MELEXIS/迈来芯
Quantity:
20 000
Part Number:
mlx91205KDC-AAL-003-TU
Manufacturer:
MELEXIS/迈来芯
Quantity:
20 000
Part Number:
mlx91205KDC-LB
Manufacturer:
Melexis
Quantity:
1 000
Part Number:
mlx91205KDC-LB-TU
Manufacturer:
MELEXIS/迈来芯
Quantity:
20 000
Features and Benefits
 Triaxis™ Hall Technology
 Sensitive to a magnetic field parallel to the
 Very high sensitivity
 Linear output voltage proportional to a
 Wideband: DC to 100kHz
 Short response time 8μs
 Low offset and offset drift
 Very low noise
 Isolated from current conductor
 Surface mount SOIC8 package
Ordering Information
Part No.
MLX91205KDC-LB
MLX91205KDC-HB
1 Functional diagram
3901091205
Rev 008
Tria is
Biasing
Unit
chip surface
magnetic field
Cancellation
Modulator
Offset
NC
PV
Calibration Unit
Amplifier
Temperature Code
(-40°C to 125°C)
(-40°C to 125°C)
VDD
PC
GND
PD
Demodulator
Buffer
IMC Current Sensor (Triaxis™ Technology)
CO_OUT
A_OUT
Page 1 of 13
Package Code
DC (SOIC)
DC (SOIC)
Applications Examples
 AC and/or DC contactless current
 Wideband Magnetic Field Measurement
 Battery Management
 AC/DC Converters
 Motor Control
 Solar Power Converter (MPPT)
 Power Management
2 General description
The new Triaxis™ 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.
The circuit is fabricated using a standard CMOS
process.
(Triaxis™ or
Concentrator) 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.
The MLX91205 is ideally suited for current
sensing
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.
measurement
The
in
IMC™ =
additional
automotive
MLX91205
Integrated Magnetic
ferromagnetic
Option code
and
Data Sheet
May/09
industrial
layer

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mlx91205 Summary of contents

Page 1

... Power Management Package Code DC (SOIC) DC (SOIC) 2 General description The new Triaxis™ 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. ...

Page 2

... Functional diagram......................................................................................................... 1 2 General description ........................................................................................................ 1 3 Glossary of Terms .......................................................................................................... 3 4 Maximum ratings ............................................................................................................ 3 5 Pad definitions and descriptions................................................................................... 3 6 MLX91205 General Electrical Specifications ................................................................ 4 MLX91205 Sensor Specific Specifications ..................................................................... 4 7........................................................................................................................................... 4 7.1 91205 LB: Low Field version 10mT (marking xxL) ..............................................................................................................................4 7.2 91205HB: High Field version 25mT (marking xxH) .............................................................................................................................5 8 Detailed General Description ......................................................................................... 6 9 Unique Features ...

Page 3

... A_out Analog Output CO_out Output Common (VDD/2) PV Programming Voltage (default VDD) PC Programming Clock (default VDD) PD Programming Data (default GND) Table 2: Pin description MLX91205 3901091205 Rev 008 IMC Current Sensor (Triaxis™ Technology) Units 6V 5.5V 0V -40 to +125C -40 to +150C Page ...

Page 4

... MLX91205 General Electrical Specifications DC Operating Parameters T = -40 A Parameter Symbol Nominal Supply Voltage Vdd Supply Current Idd Common Output CO_out Output Current Iout Output Load Resistance Rload Output Load Capacitance Cload Start-up cycle ts Table 3: Electrical specifications 7 MLX91205 Sensor Specific Specifications 7.1 91205 LB: Low Field version 10mT (marking xxL) ...

Page 5

... DD T=25°C (Note 1) T= -40, 25, 125°C; Chapter 10.2 (Note 1) T= 25°C T= 25°C T= -40, 25, 125°C; Chapter 10.1 B<Bfs B<100mT R >1MΩ; C <10pF Load Load Page MLX91205 Min Typ Max Units 97.5 100 102.5 V/T 95 100 105 V/T <+/-200 ppm/°C -20 ...

Page 6

... Detailed General Description Melexis IMC current sensor MLX91205 is a single axis magnetic field sensor based on the Hall effect 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 ...

Page 7

... C. The typical temperature drift is < 200 ppm/ °C. 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. 3901091205 Rev 008 IMC Current Sensor (Triaxis™ Technology) Page MLX91205 Data Sheet May/09 ...

Page 8

... Another method of measuring high currents on PCB’ 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 center 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 wi conductor ...

Page 9

... For reliable operation within the specifications the sensor must be connected as follows 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 008 IMC Current Sensor (Triaxis™ Technology) Page MLX91205 Data Sheet May/09 ...

Page 10

... 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.asp 3901091205 Rev 008 IMC Current Sensor (Triaxis™ Technology) Page MLX91205 Data Sheet May/09 ...

Page 11

... Dimension does not include dambar protrusion. 3.99** 6.20** 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. 1.40 1.55 0.19 1.55 0.25 1.73 0.127 0.250 Page MLX91205 0° 8° 0.41 0.89 Data Sheet May/09 ...

Page 12

... Pinout and marking 15.3 Hall plate positioning 3901091205 Rev 008 IMC Current Sensor (Triaxis™ Technology) Page MLX91205 Data Sheet May/09 ...

Page 13

... Or for additional information contact Melexis Direct: E-mail: sales_europe@melexis.com 3901091205 Rev 008 IMC Current Sensor (Triaxis™ Technology) www.melexis.com Europe, Africa, Asia: Phone: +32 1367 0495 Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com ISO/TS 16949 and ISO14001 Certified Page MLX91205 America: Data Sheet May/09 ...

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