HAL 519
4.11. HAL 519
The HAL 519 is a very sensitive unipolar switching
sensor with an inverted output sensitive only to the
magnetic north polarity (see Fig. 4–41).
The output turns high with the magnetic north pole on
the branded side of the package and turns low if the
magnetic field is removed. The sensor does not
respond to the magnetic south pole on the branded
side, the output remains low. For correct functioning in
the application, the sensor requires only the magnetic
north pole on the branded side of the package.
Applications
DATA SHEET
The HAL 519 is the optimal sensor for all applications
with the north magnetic polarity and weak magnetic
amplitude at the sensor position where an inverted
output signal is required such as:
– solid-state switches,
– contactless solution to replace microswitches,
– position and end-point detection, and
– rotating speed measurement.
Magnetic Features:
– switching type: unipolar inverted, north sensitive
– high sensitivity
– typical B
ON
:
−3.5
mT at room temperature
– typical B
OFF
:
−5.5
mT at room temperature
– operates with static magnetic fields and dynamic
magnetic fields up to 10 kHz
– typical temperature coefficient of magnetic switching
points is
−1000
ppm/K
B
OFF
V
O
B
HYS
Output Voltage
V
OL
B
ON
0 B
Fig. 4–41:
Definition of magnetic switching points for
the HAL 519
Magnetic Characteristics
at T
J
=
−40 °C
to +170
°C,
V
DD
= 3.8 V to 24 V,
Typical Characteristics for V
DD
= 12 V
Magnetic flux density values of switching points.
Positive flux density values refer to the magnetic south pole at the branded side of the package.
Parameter
T
J
−40 °C
25
°C
140
°C
170
°C
Min.
-5.4
-5
-5.1
-5.2
On point B
ON
Typ.
-3.8
-3.6
-3.1
-3
Max.
-2.1
-2
-1.7
-1.5
Off point B
OFF
Min.
-7.7
-7.2
-6.8
-6.8
Typ.
-5.9
-5.5
-4.8
-4.6
Max.
-4.3
-3.8
-3.1
-2.8
Hysteresis B
HYS
Min.
1.6
1.5
1
0.9
Typ.
2.1
1.9
1.7
1.6
Max.
2.8
2.7
2.6
2.6
Magnetic Offset
Min.
−
-6.2
−
−
Typ.
-4.8
-4.5
-4
-3.8
Max.
−
-3.8
−
−
mT
mT
mT
mT
Unit
The hysteresis is the difference between the switching points B
HYS
= B
ON
−
B
OFF
The magnetic offset is the mean value of the switching points B
OFFSET
= (B
ON
+ B
OFF
) / 2
42
Jan. 11. 2010; DSH000020_004EN
Micronas
MICRONAS [ MICRONAS ]
