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)
Hall Voltage 240mV GaAs Hall Device
LT135A
LT135A
Hall Device
2.7±0.3
1.5±0.2
1
2
4
3
0.6
0.4
0.4
0.4
1.9
2.9±0.2
(0.85)
(0.95)
2.9±0.2
4-R0.2
N
0.6
0.6
0.3
0.8
(0to0.15)
0.16
+0.10
-0.06
1.1
+0.2
-0.1
Terminal connection
1:V
C
Input
2:V
H
Output
3:V
C
Input
4:V
H
Output
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
=25°C)
Control current
I
C
15
mA
s
Electrical Characteristics
(T
a
=25°C)
No-load Hall voltage
*1
Imbalanced voltage
*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
V
HO
R
IN
R
OUT
|
V
HO
|
Conditions
V
C
=6V, B=100mT
V
C
=6V, B=0mT
I
M
=1mA, B=0mT
I
M
=1mA, B=0mT
V
C
=6V, B=0mT, T
a
=-20°C to 25°C
V
C
=6V, B=0mT, T
a
=25°C to 125°C
I
C
=6mA, B=100mT, T
1
=-20°C, T
2
=125°C
I
M
=1mA, B=0mT, T
1
=-20°C, T
2
=125°C
I
C
=6mA, B
1
=50mT, B
2
=100mT
MIN
200
-15
650
1 300
-
-
-
-
TYP.
240
-
800
1 600
5
-0.03
0.2
2
MAX.
280
15
950
1 900
-
-
-
-
Unit
mV
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 -20°C to + 125°C.
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)
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
LT135A
Hall Device
V
C
=6V
T
a
=25°C
0
0
500
400
100
200
300
600
1 600
1 400
1 000
1 200
600
400
800
200
Hall voltage V
H
(mV)
Magnetic flux density B (mT)
B=100mT
T
a
=25°C
0
0
8
4
12
600
400
300
200
100
Hall voltage V
H
(mV)
Control current I
C
(mA)
B=100mT
0
-20
0
80
40
120
300
250
200
150
100
50
Hall voltage V
H
(mV)
Ambient temperature T
a
(°C)
V
C
=6V
I
C
=6mA
0
0
80
40
120
160
200
200
160
120
80
40
Power dissipation P
D
(mW)
Ambient temperature T
a
(°C)
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
=25°C
0
0
8
10
2
4
6
12
600
400
500
200
300
100
Hall voltage V
H
(mV)
Control voltage V
C
(V)
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