In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices
shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device spcification sheets before using any SHARP device.
s
Features
Small temperature coefficient of the Hall voltage
Good linearity of the Hall voltage
Small imbalanced voltage
Directly DC voltage applicable
s
Applications
Brushless motors
VCR, CD, CD-ROM, FDD
Measuring equipment
Gauss meters, magnetic substance detectors
Noncontact sensors
Microswitches, tape-end detection
Other magnetic detection
s
Outline Dimensions
(Unit : mm)
LT140SA
LT140SA
Hall Device
Terminal connection
1 : V
C
Input
2 : V
H
Output
3 : V
C
Input
4 : V
H
Output
0.3
0.3
0.6
0.3
0.3
1
4
2
3
Silver Mark
0.9
1.45
1.40
2.85
1.45
1.40
0.7
0.7
0.6
0.4
0.2
0.14
+0.1
-0.04
+
+
-
-
Hall Voltage 160mV Thin-Type Package GaAs Hall Device
As for dimensions of tape-packaged products, refer to page 44 .
Control voltage
Power dissipation
Operating temperature
Storage temperature
Soldering temperature
*1
Symbol
V
C
P
D
T
opr
T
stg
T
sol
Rating
12
150
-20 to +125
-55 to +150
260
Unit
V
mW
C
C
C
Parameter
*1 Soldering time:10 seconds
s
Absolute Maximum Ratings
(T
a
=25C)
Control current
I
C
15
mA
s
Electrical Characteristics
(T
a
=25C)
No-load Hall voltage
*1
Imbalanced ratio
*2
Input resistance
Output resistance
Drift of imbalanced voltage vs. temperature
Temperature coefficient of Hall voltage
Temperature coefficient of input resistance
Linearity of Hall voltage
Symbol
V
H
Rank A
Rank B
Rank C
R
IN
R
OUT
|
V
HO
|
Conditions
V
C
=6V,B=100mT
V
C
=6V, (B=0)/(B=100mT)
I
M
=1mA, B=0mT
I
M
=1mA, B=0mT
V
C
=6V, B=0mT, T
a
=-20C to 25C
V
C
=6V, B=0mT, T
a
=25C to 125C
I
C
=6mA, B=100mT, T
1
=-20C, T
2
=125C
I
M
=1mA, B=0mT, T
1
=-20C, T
2
=125C
I
C
=6mA, B
1
=50mT, B
2
=100mT
MIN.
145
2
-5
-2
650
1 300
-
-
-
-
TYP.
160
-
-
-
800
1 600
5
-0.04
0.2
0.3
MAX.
175
12
5
-12
950
1 900
-
-
-
-
Unit
mV
%
mV
%/C
%/C
%
Parameter
*1 No-load Hall voltage is nearly proportional to Vc (within the range of 1 to 6V) at temperatures of -20C to + 125C.
Keep the voltage within the allowable power dissipation range.
*2 Imbalanced ratio is in +/-12% within the range of Vc=1 to 6V.
V
H
=V
M
-V
HO
V
M
:Observed Hall voltage
V
HO
:Imbalanced voltage
K
H
:Sensitivity
=
=
1
V
H
(T
1
)
X
X
100
{V
H
(T
2
)-V
H
(T
1
)}
(T
2
-T
1
)
X
X
100
1
R
IN
(T
1
)
{R
IN
(T
2
)-R
IN
(T
1
)}
(T
2
-T
1
)
X
2
X
100,
=
{K
H
(B
2
)-K
H
(B
1
)}
{K
H
(B
1
)+K
H
(B
2
)}
K
H
=
V
H
(I
C
X
B)
V
HO
/V
H
Fig. 1 Hall Voltage vs. Ambient
Temperature
Fig. 2 Input Resistance vs. Ambient
Temperature
Fig. 6 Power Dissipation vs. Ambient
Temperature
Fig. 5 Hall Voltage vs. Control Voltage
Fig. 3 Hall Voltage vs. Magnetic Flux
Density
Fig. 4 Hall Voltage vs. Control Current
Hall Device
B=0mT
I
M
=1mA
0
-20
0
80
40
120
2 000
1 600
1 200
800
400
Input resistance R
IN
(
)
Ambient temperature T
a
(C)
B=100mT
T
a
=25C
0
0
8
4
12
400
320
240
160
80
Hall voltage V
H
(mV)
Control current I
C
(mA)
V
C
=6V
T
a
=25C
0
0
800
400
200
600
1 000
2 000
1 600
1 200
800
400
Hall voltage V
H
(mV)
Magnetic flux density B (mT)
0
0
80
40
120
160
200
200
160
120
80
40
Power dissipation P
D
(mW)
Ambient temperature T
a
(C)
LT140SA
B=100mT
0
-20
0
80
40
120
200
160
120
80
40
Hall voltage V
H
(mV)
Ambient temperature T
a
(C)
V
C
=6V
I
C
=6mA
B=100mT
T
a
=25C
0
0
8
4
12
400
320
240
160
80
Hall voltage V
H
(mV)
Control voltage V
C
(V)
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