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GaAs Hall Elements
OH017
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
q Low current dissipation type
q Mini thin type (4-pin) package. Automatic insertion through taping
and magazine possible.
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
100
–10 to +125
– 55 to +125
Unit
V
mW
˚C
˚C
MA111
Unit : mm
41
32
0.6±0.1 1.45±0.05 0.8±0.1
2.85±0.25
5° 5°
0.26±0.05
1 : VC Input side
2 : VH Output side
3 : VC Input + side
4 : VH Output + side
Mini Thin Type Package (4-pin)
Marking Symbol : D
s Electrical Characteristics (Ta= 25˚C)
Parameter
Symbol
Condition
min typ max Unit
Hall voltage
Unbalance voltage
Input Resistance
Output resistance
Temperature coefficient of hall voltage
VH*1
VHO*2
RIN
ROUT
β
VC= 3V, B= 0.1T
VC= 3V, B= 0T
IC= 0.1mA, B= 0T
IC= 0.1mA, B= 0T
IC=1.5mA, B= 0.1T
70 90 110 mV
+ 9.5
mV
1.5 2
3
k
5 7 10 k
– 0.06 %/˚C
Temperature coefficient of input resistance
Linearity of hall voltage
α
γ ∗3
IC= 0.1mA, B= 0T
IC=1mA, B= 0.05T/0.1T
0.3 %/˚C
2%
*1 VH =
VH+ + VH–
2
*2 Output pin voltage at no-load (B= 0)
*3 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
OH017
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
1
42
3
–5V
+5V
+
–5V
–V +V