MLX90224 Rev005 Datasheet DownloadLink 4760

MLX90224
Dual Hall Effect Switch
Features and Benefits
Chopper Stabilized Amplifier Stage
CMOS for Optimum Stability, Quality and Cost
Dual Output
5V to 24V Operation
Phase/Direction Detection (option code B)
Applications
Direction Detector
Speed Sensor
Shaft Encoding
Position Sensing
Ordering Information
Part No.
MLX90224
MLX90224
Temperature Suffix
E (-40°C to 85°C)
E (-40°C to 85°C)
Package Code
VA
VA
1. Functional Diagram
2. Description
1
Voltage
Regulator
Replaced with Logic for
MLX90224 B
2
Chopper
4
Chopper
3
The MLX90224 series are dual Hall effect
switches. It includes two Hall effect switch
functions of which typical thresholds are +/- 2.0
mT. In each switch, the magnetic flux detection
is performed by a switched silicon Hall plate.
The BOP and BRP are temperature-compensated
and give a sensitivity temperature coefficient of
500 ppm/oC to compensate popular magnets.
The MLX90224LVAA output transistor will be
“switched on” (BOP) in the presence of a
sufficiently strong South pole magnetic field
facing the marked side of the package. Similarly,
the output will be “switched off” (BRP) in the
presence of a North field. Spacing on the plates
is 1.85mm.
The MLX90224LVAB serie is designed for
direction detection with a high speed chopper.
MLX90224EVA-A
MLX90224EVA-B
Pin 1
VDD
VDD
Pin 2
Switch Plate 1
Speed
Pin 3
GND
GND
Pin 4
Switch Plate 2
Direction
3901090224
Rev. 005
Option code
A
B
The output structure is an Open-Drain NMOS
transistor with a capability of 25 mA.
Page 1 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
TABLE OF CONTENTS
FEATURES AND BENEFITS ....................................................................................................................... 1
APPLICATIONS............................................................................................................................................ 1
ORDERING INFORMATION......................................................................................................................... 1
1.
FUNCTIONAL DIAGRAM................................................................................................................... 1-1
2.
DESCRIPTION.................................................................................................................................... 2-1
3.
GLOSSARY OF TERMS ....................................................................................................................... 3
4.
ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 3
5.
MLX90224 ELECTRICAL SPECIFICATIONS ...................................................................................... 3
6.
MLX90224 SENSOR SPECIFIC SPECIFICATIONS ............................................................................ 4
7.
GENERAL DESCRIPTION .................................................................................................................... 4
8.
PERFORMANCE GRAPHS................................................................................................................... 5
9.
APPLICATIONS INFORMATION .......................................................................................................... 6
10. RELIABILITY INFORMATION............................................................................................................... 8
11. ESD PRECAUTIONS............................................................................................................................. 8
12. PACKAGE INFORMATION................................................................................................................... 9
13. DISCLAIMER ....................................................................................................................................... 10
3901090224
Rev. 005
Page 2-2 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
3. Glossary of Terms
Gauss, Tesla: Two units to quantify a magnetic flux density. Conversion: 1 mT = 10 Gauss
Bop: B Operating Point: When the magnetic flux density increases and reaches the Bop value, the output
switches on. This value is in Gauss.
Brp: B Release Point: When the magnetic flux density decreases and reaches the Brp value, the output
switches off. This value is in Gauss.
4. Absolute Maximum Ratings
Supply Voltage, VDD
24 V
Supply Current, IDD
50 mA
Output Current, IOUT
40 mA
Output Short-Circuit Current
150 mA
Operating Temperature Range, TA
-40°C to 150°C
Storage Temperature Range, TS
-65°C to 150°C
Maximum Junction Temp, TJ
+ 175°C
Magnetic Flux Density
Infinite
Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability.
5. MLX90224 Electrical Specifications
DC Operating Parameters TA = -40oC to 85oC, VDD = 5V to 24V (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Supply Voltage
VDD
Supply Current
IDD
Output Current
IOUT
B>BOP
Saturation Output Voltage
VSAT
B>BOP, IOUT=20 mA
Output Voltage
VOUT
B<BRP
Output Leakage
ILEAK
Refresh Time
3901090224
Rev. 005
Operating
5
3.0
Tr
200
7
Page 3 of 10
7.5
Units
24
V
10
mA
20
mA
600
mV
24
V
10
µA
15
µS
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
6. MLX90224 Sensor Specific Specifications
DC Operating Parameters TA = -40oC to 85oC, VDD = 5V to 24V (unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Operate Point
BOP
-
2.5
5.5
mT
Release Point
BRP
-5.5
-2.5
-
mT
Hysteresis
BHYS
1.0
4.0
7.5
mT
Note:
1 mT = 10 Gauss
7. General Description
The MLX 90224 is designed for use with multipole ring magnet targets having evenly distributed North
and South magnetic poles on the circumference of the target. An example of the basic physical
arrangement of the sensor and magnet is shown in Fig. 1. The MLX90224 is available in 2 versions. The
first version provides the user with two digital output signals. Output S1 will provide a speed pulse from
the changing magnetic flux at sensing element S1. Output S2 will provide a phase shifted (d = 1.85 mm)
output identical in pulse width and period to S1. This version is referred to as MLX90224LVAA. The
MLX90224LVAB version provides an output signal that decodes the phase shifted signals to directly
provide an output for the speed which is twice the rotation speed of the target. The other output pin
represent the direction and changes from logic-high to logic-low when the direction of rotation of the
magnet is reversed. It allows to directly see the condition of the speed with twice the resolution of the
MLX90224LVAA and to also know directly the direction of rotation of the target. The MLX90224LVAA has
switching magnetic Bop and Brp values of typically +/- 2.5 mT as does the internal circuitry of the LVAB.
N S N S
N S
N
S
N
S N S N S
S
N
N
S
N
S
N
S N S N S
S
N
S
N
N
S
N S N S
N S
N
S
Figure 1: Application with a multipole ring magnet
3901090224
Rev. 005
Page 4 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
8. Performance Graphs
Output Voltage
versus
Flux Density
Typical Magnetic Switch Points
versus
Temperature
90224 A, B
5
90224 A, B
25
VDD
20
3
Output Voltage (V)
Flux Density (mT)
BOP
1
0
-1
BRP
15
BRP
BOP
10
5
-3
Vsat
0
-5
-40
0
40
80
120
160
-6
200
-4
Temperature ( C)
90224
2
4
6
90224
500
8
400
TA = -40oC
6
VDS(ON) (mV)
Supply Current (mA)
0
Typical Saturation Voltage
versus
Temperature
VDD = 12 V, IOUT = 20mA
Typical Supply Current
versus
Supply Voltage
10
-2
Flux Density (mT)
o
TA = 25oC
TA = 85 oC
4
2
300
VDS(ON)
200
100
0
0
0
5
10
15
20
25
30
-40
Supply Voltage (V)
3901090224
Rev. 005
0
40
80
120
160
200
Temperature (oC)
Page 5 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
9. Applications Information
Severe Environment and
Automotive Protection Circuit
VDD
R1
R2
MLX
90224
R3
Output
Output
C1
C2
C2
R1, R2 = 5.6k
R3 = 332
C1 = 10nF
C2 = 2.2nF
In severe cases it may be necessary to include a Zener diode to clamp positive
interference and Schottky diodes to clamp negative excursions.
3901090224
Rev. 005
Page 6 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
Timing diagram when applied a B1-B2 quadratic
magnetic field on MLX90224, LVAA version
60
Magnetic
Field (G)
40
Bop
20
B1
B2
0
-20
Brp
-40
Out 1
Out 2
0
20
40
60
80
100
120
140
time (ms)
160
180
200
Timing diagram when applied a B1-B2 quadratic magnetic
field on MLX90224, LVAB version (direction and speed
outputs)
50
Magnetic
Field (G)
Bop
B1
B2
0
Brp
-50
Signal from
Plate 1
Signal from
Plate 2
Speed output
Direction
output
0
3901090224
Rev. 005
50
100
150
200
time
Page 7 of 10
250
300
350
400
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
10.
Reliability Information
Melexis devices are classified and qualified regarding suitability for infrared, vapor phase and wave
soldering with usual (63/37 SnPb-) solder (melting point at 183degC).
The following test methods are applied:
IPC/JEDEC J-STD-020A (issue April 1999)
Moisture/Reflow Sensitivity Classification For Nonhermetic Solid State Surface Mount Devices
CECC00802 (issue 1994)
Standard Method For The Specification of Surface Mounting Components (SMDs) of Assessed Quality
MIL 883 Method 2003 / JEDEC-STD-22 Test Method B102
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.
For more information on manufacturability/solderability see quality page at our website:
http://www.melexis.com/
11.
ESD Precautions
Electronic semiconductor products are sensitive to Electro Static Discharge (ESD).
Always observe Electro Static Discharge control procedures whenever handling semiconductor products.
3901090224
Rev. 005
Page 8 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
12.
Package Information
VA Package
Dimensions
5.33
5.43
5.08
5.24
VA Hall Plate / Chip Location
J
Hall Plates
0.25 x 0.25
1.22
1.32
3.76
3.86
4.50
3.615
2.69
1.765
2.700
1.700
A
4.10
0.387
0.289
B
2.180
C
45 o X 1mm
224XA
ZZZZZ
5o
5o
(2x)
(2x)
0.387
0.289
3. 46
3 .79
3. 30
3 .63
Marked
Surface
D
VA
F
G
H
1.0
0.22
REF
B
MAX
1
2
3
A
4
C
15.50
14.50
D
E
F
0.45
0.35
G
H
J
1.20
1.10
All Dimensions in millimeters
E
0.66
0.61
0.29
0.24
45 o
0.31
0.18
0.60
0.40
0.35
0.25
0.15
0.0
45 o
Notes:
1. Pinout:
Pin 1
Vdd
Latch Plate 1/ Speed
Pin 2
Pin 3
GND
Pin 4
Latch Plate 2 / Direction
2. Controlling dimension: mm .
3. Leads must be free of flash and plating voids.
4. Leads must not arc toward the rear of package.
5. Package dimensions exclude molding flash.
6. Tolerance: +/- 0.254 mm unless otherwise specified.
7. Marking:
Line 1:
3 first digits (224) =Part Number MLX90224
4th and 5th digits (XA)
= Version A (double latch)
(XB)
= Version B (Speed-Direction)
Line 2:
5 digits (ZZZZZ)
=Lot Number
Back Side Marking
4 digits (WWYY) =Date Code
3901090224
Rev. 005
Page 9 of 10
Data Sheet
July/03
MLX90224
Dual Hall Effect Switch
13.
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.
© 2002 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 and Japan:
All other locations:
Phone: +32 13 67 04 95
E-mail: [email protected]
3901090224
Rev. 005
Phone: +1 603 223 2362
E-mail: [email protected]
Page 10 of 10
Data Sheet
July/03
QS9000, VDA6.1 and ISO14001 Certified