Semiconductor Group
1
1998-11-13
The KSY 44 is a MOVPE
1)
Hall sensor in a mono-crystalline GaAs material, built into an
extremely flat plastic package (SOH). It is outstanding for a high magnetic sensitivity and
low temperature coefficients. The 0.35
0.35 mm
2
chip is mounted onto a non-magnetic
leadframe.
Type
Marking
Ordering Code
KSY 44
44
Q62705-K265
Hall Sensor
KSY 44
Preliminary Data
Dimensions in mm
Features
High sensitivity
High operating temperature
Small linearity error
Low offset voltage
Low TC of sensitivity
Specified TC of offset voltage
Low inductive zero component
Package thickness 0.7 mm
Connections from one side of the
package
Typical Applications
Current and power measurement
Magnetic field measurement
Control of brushless DC motors
Rotation and position sensing
Measurement of diaphragm
Movement for pressure sensing
1) Metal Organic Vapour Phase Epitaxy
Semiconductor Group
2
1998-11-13
KSY 44
Maximum Ratings
Characteristics (
T
A
= 25
C)
Parameter
Symbol
Value
Unit
Operating temperature
T
A
40
...
+ 175
C
Storage temperature
T
stg
50
...
+ 180
C
Supply current
I
1
10
mA
Thermal conductivity
soldered, in air
G
thA
G
thC
1.5
2.2
mW/K
mW/K
Nominal supply current
I
1N
7
mA
Open-circuit sensitivity
K
B0
150
...
265
V/AT
Open-circuit Hall voltage
I
1
=
I
1N
,
B
= 0.1 T
V
20
105
...
185
mV
Ohmic offset voltage
I
1
=
I
1N
,
B
= 0 T
V
R0
15
mV
Linearity of Hall voltage
B
= 0
...
0.5 T
B
= 0
...
1.0 T
F
L
0.2
0.7
%
%
Input resistance
B
= 0 T
R
10
600
...
900
Output resistance
B
= 0 T
R
20
1000
...
1500
Temperature coefficient of the
open-circuit Hall voltage
I
1
=
I
1N
,
B
= 0.1 T
TC
V20
0.03
%/K
Temperature coefficient of the internal
resistance,
B
= 0 T
TC
R10, R20
+ 0.3
%/K
Temperature coefficient of ohmic offset
voltage,
I
1
=
I
1N
,
B
= 0 T
TC
VR0
0.3
%/K
Inductive zero component,
I
1N
= 0
A
2
1)
0.16
cm
2
Switch-on drift of the ohmic offset
voltage
I
1
=
I
1N
,
B
= 0 T
dV
0
2)
V
0
3)
0.3
0.1
mV
mV
Noise figure
F
10
dB
1) With time varying induction there exists an inductive voltage
V
ind
between the Hall voltage terminals (supply
current
I
1
= 0):
V
ind
=
A
2
d
B
/d
t
10
-4
with
V
(V),
A
2
(cm
2
),
B
(T),
t
(s)
2)
dV
0
=
V
0
(
t
= 1s)
V
0
(
t
= 0.1 s)
3)
V
0
=
V
0
(
t
= 3
m
)
V
0
(
t
= 1 s)
Semiconductor Group
3
1998-11-13
KSY 44
Connection of a Hall Sensor with a Power Source
Since the voltage on the component must not exceed 10 V, the connection to the
constant current supply should only be done via a short circuit by-pass. The by-pass
circuit-breaker shall not be opened before turning on the power source, in order to avoid
damage to the Hall sensor due to power peaks.
Polarity of Hall Voltage
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