WSH138

WSH138
Linear Hall Effect Sensor IC
Features:

Wide operating range 3.0~12V, -40℃~125℃



Flat Response to 23kHz
High Sensitivity 8.3 mV/G
Wide sensible magnetic field range on different supplied voltage
±200 Gauss on 5V supplied voltage
±500 Gauss on 12V supplied voltage. Low operating current 3mA
Two package styles TO-92S/SOT-23 available.
Built-in temperature compensated circuit to minimize temperature’s effect


Functional Description :
The W138 integrates Hall sensing element, linear amplifer, sensitivity
controller and emitter follower output stage.It accurately tracks extremely small
change in magnetic flux density –generally too small to operate Hall effect
switch.
W138 can be applied as current sensor, tooth sensor, proximity detectors
and motion detectors. As sensitive monitor of magnetic flux, it can effectively
measure a system’s performance with negligible system loading while
providing isolation from contaminated and electrically noisy environments.
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/7
WSH138
Electrical Characteristics:
Characteristic
Supply Voltage
Symbol
Vcc
Supply Current
Isupply
Quiescent Vout
V0G
Sensitivity
△Vout
Bandwidth
BW
Measurable Guass
Range
Temperature Drift
MGR
△Vout
(T=+25˚C, Vdd=5.0V )
Test Conditions Min
3.0
─
Typ
B=0 Gauss
B=0 G (A Grade)
B=0 G (B Grade)
B= 0 to ± 200 G
Vdd=5V
Vdd=12V
B=0 Gauss
─
Max
12
Units
V
─
3.0
5.0
mA
2.4
2.3
7.4
2.5
2.5
8.3
2.6
2.7
9.2
V
mV/G
－
23
－
kHz
－
－
－
±200
±500
±1.0
－
－
－
Guass
mV/℃
1.All output-voltage measurements are made with a voltmeter having an input impedance of at least 100kΩ
2. Do not apply any load on output pin, it will degrade IC performance.
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/7
WSH138
Package Information:
TO92S:
SOT23:
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/7
WSH138
Characteristic Diagrams:
WSH138 Sensitivity standardization of 30˚C VS. Temperature
1.200
1.000
0.800
0.600
0.400
0.200
0.000
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130 ˚C
ratio 0.877 0.929 0.973 0.997 1.013 1.019 1.016 1.000 0.986 0.961 0.933 0.901 0.866 0.829 0.786 0.743 0.698 0.629
WSH138 Vout vs. Magnetic field with Vdd 5V
6.00
5.00
y = 0.0072x + 2.5217
R² = 0.9994
4.00
V 3.00
2.00
1.00
0.00
-600
-500
N
-400
-300
-200
-100
0
100
200
300
400
500
G
S
600
WSH138 Vout vs. Magnetic field with Vdd 3.3V
3.500
y = 0.0054x + 1.7188
R² = 0.9982
3.000
2.500
V
2.000
1.500
1.000
0.500
0.000
-400
-300
N
-200
-100
0
100
200
G
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/7
300
400
S
WSH138
W138 Sensitivity vs. Vdd
14.00
13.00
12.00
11.00
10.00
mV/G 9.00
8.00
7.00
6.00
5.00
4.00
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
10.0
11.0
12.0
13.0
10.0
11.0
12.0
V
WSH138 Current vs. Vdd
5.000
4.500
4.000
mA 3.500
3.000
2.500
2.000
3.0
4.0
5.0
6.0
7.0
8.0
9.0
V
WSH138 Vout vs. Vdd
7.000
6.000
5.000
V 4.000
3.000
2.000
1.000
3.0
4.0
5.0
6.0
7.0
8.0
9.0
V
Winson reserves the right to make changes to improve reliability or manufacturability.
©Winson, 2015/5/7
13.0