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GaAs Hall Elements
MA111
OH023
GaAs hall element
Magnetic sensor
s Features
q Hall voltage : typ. 90mV(VC= 3V, B= 0.1T)
q Input resistance : typ. 2k(min. 1.5k)
q Output resistance : typ. 7k(max. 10k)
q Sealed in the Mini type (4-pin) package. Automatic insertion through
taping and magazine.
s Applications
q Various hall motor
(Applicable to CD, VD, VCR, FDD, and other portable equipment)
q Applicable to wide-varying field (OA equipment, etc.)
s Absolute Maximum Ratings (Ta= 25˚C)
Parameter
Control voltage
Power dissipation
Operating ambient temperature
Storage temperature
Symbol
VC
PD
Topr
Tstg
Rating
6
150
–10 to +125
– 55 to +125
Unit
V
mW
˚C
˚C
0.65±0.15
+0.2
2.8 –0.3
+0.2
1.5 –0.3
Unit : mm
0.65±0.15
0.5R
41
32
0.4±0.2
Marking Symbol : OT
1 : VH Output side
2 : VC Input side
3 : VH Output + side
4 : VC Input + side
Mini Type Package (4-pin)
s Electrical Characteristics (Ta= 25˚C)
Parameter
Symbol
Condition
min typ max Unit
Hall voltage
VH*1
VC= 3V, B= 0.1T
70 90 110 mV
Unbalance voltage
VHO VC= 3V, B= 0T
±9.5 mV
Input Resistance
RIN IC= 0.1mA, B= 0T
1.5 2
3
k
Output resistance
ROUT
IC= 0.1mA, B= 0T
5 7 10 k
Temperature coefficient of hall voltage
β
IC=1.5mA, B= 0.1T
– 0.06 %/˚C
Temperature coefficient of input resistance
Linearity of hall voltage
α
γ ∗2
IC= 0.1mA, B= 0T
IC=1mA, B= 0.05T/0.1T
0.3 %/˚C
2%
*1 VH =
VH+ + VH–
2
*2 The linearity γ of VH is a percentage of the cumulative sensitivity of KH0.05 and KH0.1 measured at B= 0.05T and 0.1T for the average value.
γ=
KH0.1 – KH0.05
1/2 (KH0.05 + KH0.1)
( Percentage of the cumulative sensitivity KH =
VH
IC · B
)

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GaAs Hall Elements
OH023
PD – Ta
200
180
160
140
120
100
80
60
40
20
0
0 20 40 60 80 100 120 140 160
Ambient temperature Ta (˚C)
VH – B
200
VC=3V
Ta=25˚C
150
100
50
0
0 0.04 0.08 0.12 0.16 0.20
Magnetic flux density B (T)
VH – Ta
240
B=0.1T
IC=1.5mA
200
160
120
80
40
0
– 40
0
40 80 120
Ambient temperature Ta (˚C)
320
280
240
200
160
120
80
40
0
0
VH – IC
B=0.1T
Ta=25˚C
123
Control current IC (mA)
4
RIN – Ta
4000
B=0
IC=0.1mA
3000
2000
1000
0
–40
0
40 80 120
Ambient temperature Ta (˚C)
VH – VC
320
B=0.1T
Ta=25˚C
280
240
200
160
120
80
40
0
012345678
Control voltage VC (V)
s Typical Drive Circuit
+5V
4
31
2
–5V
+5V
+
–5V
–V +V