Hall Sensor
Preliminary Data
KSY 44
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
Dimensions in mm
Type
KSY 44
Marking
44
Ordering Code
Q62705-K265
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.
1) Metal Organic Vapour Phase Epitaxy
Semiconductor Group
1
1998-11-13
KSY 44
Maximum Ratings
Parameter
Operating temperature
Storage temperature
Supply current
Thermal conductivity
soldered, in air
Characteristics (
T
A
= 25
°C)
Nominal supply current
Open-circuit sensitivity
Open-circuit Hall voltage
I
1
=
I
1N
,
B
= 0.1 T
Ohmic offset voltage
I
1
=
I
1N
,
B
= 0 T
Linearity of Hall voltage
B
= 0…0.5 T
B
= 0…1.0 T
Input resistance
Output resistance
Symbol
Value
– 40…+ 175
– 50…+ 180
10
≥
1.5
≥
2.2
Unit
°C
°C
mA
mW/K
mW/K
T
A
T
stg
I
1
G
thA
G
thC
I
1N
K
B0
V
20
V
R0
F
L
7
150…265
105…185
≤ ±
15
mA
V/AT
mV
mV
≤ ±
0.2
≤ ±
0.7
600…900
1000…1500
∼
– 0.03
%
%
Ω
Ω
%/K
B
=0 T
B
=0 T
Temperature coefficient of the
open-circuit Hall voltage
I
1
=
I
1N
,
B
= 0.1 T
Temperature coefficient of the internal
resistance,
B
= 0 T
Temperature coefficient of ohmic offset
voltage,
I
1
=
I
1N
,
B
= 0 T
Inductive zero component,
I
1N
= 0
Switch-on drift of the ohmic offset
voltage
I
1
=
I
1N
,
B
= 0 T
Noise figure
R
10
R
20
TC
V20
TC
R10, R20
TC
VR0
A
21)
dV
02)
∆
V
03)
F
∼
+ 0.3
∼
– 0.3
0.16
≤
0.3
≤
0.1
∼
10
%/K
%/K
cm
2
mV
mV
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
2
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
Semiconductor Group
3
1998-11-13
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