HAL506 Datasheet, PDF (34/44 Pages) List of Unclassifed Manufacturers – Hall Effect Sensor Family

HAL518
4.11. HAL 518
The HAL 518 is a unipolar switching sensor with inverted
output (see Fig. 4–41).
The output turns high with the magnetic south 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 north pole on the branded side.
For correct functioning in the application, the sensor re-
quires only the magnetic south pole on the branded side
of the package.
In the HAL 5xx family, the HAL 508 is a sensor with the
same magnetic characteristics but with a normal output
characteristic.
Magnetic Features:
– switching type: unipolar inverted
– medium sensitivity
– typical B_ON: 16 mT at room temperature
– typical B_OFF: 18 mT at room temperature
– operates with static magnetic fields and dynamic mag-
netic fields up to 10 kHz
– typical temperature coefficient of magnetic switching
points is –1000 ppm/K
Applications
The HAL 518 is the optimal sensor for applications with
one magnetic polarity where an inverted output signal is
required such as:
– solid state switches,
– contactless solution to replace micro switches,
– position and end point detection, and
– rotating speed measurement.
Output Voltage
V_O
B_HYS
V_OL
0
B_ON
B_OFF
B
Fig. 4–41: Definition of magnetic switching points for
the HAL 518
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
100 °C
140 °C
170 °C
On point B_ON
Min. Typ. Max.
14
16.7 20
13.5 16
19
12.5 14.8 18.7
11.7 14.1 18.5
11
13.6 18.3
Off point B_OFF
Min. Typ. Max.
15.5 19
22
15
18
20.7
13.9 16.6 20.4
13
15.8 20.2
12.2 15.3 20
Hysteresis B_HYS
Min. Typ. Max.
1.5
2.3
3
1.4
2
2.8
1
1.8
2.7
0.9
1.7
2.7
0.8
1.7
2.6
Magnetic Offset
Unit
Min. Typ. Max.
17.8
mT
14
17
20
mT
15.7
mT
15
mT
14.4
mT
The hysteresis is the difference between the switching points B_HYS = B_OFF – B_ON
The magnetic offset is the mean value of the switching points B_OFFSET = (B_ON + B_OFF) / 2
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