HAL571 Datasheet, PDF (13/20 Pages) List of Unclassifed Manufacturers – Two-Wire Hall Effect Sensor Family

ADVANCE INFORMATION
HAL573
4.2. HAL 573
The HAL 573 is a low sensitive unipolar switching sensor
(see Fig. 4–2).
The sensor turns to high current consumption with the
magnetic south pole on the branded side of the package
and turns to low current consumption if the magnetic
field is removed. It 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.
Magnetic Features:
– switching type: unipolar
– low sensitivity
– typical B_ON: 43.5 mT at room temperature
– typical B_OFF: 41.5 mT at room temperature
– typical temperature coefficient of magnetic switching
points is –1100 ppm/K
– operates with static magnetic fields and dynamic mag-
netic fields up to 10 kHz
Applications
The HAL 573 is designed for applications with one mag-
netic polarity and weak magnetic amplitudes at the sen-
sor position such as:
– applications with large airgap or weak magnets,
– solid state switches,
– contactless solutions to replace micro switches,
– position and end point detection, and
– rotating speed measurement.
Current consumption
I_DDhigh
B_HYS
I_DDlow
0
B_OFF
B_ON
B
Fig. 4–2: Definition of magnetic switching points for
the HAL 573
Magnetic Characteristics at T_J = –40 °C to +140 °C, V_DD = 3.75 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
On point B_ON
Min. Typ. Max.
40.2 45.7 51.2
38
43.5 49
34
40
46
tbd
–
tbd
Off point B_OFF
Min. Typ. Max.
38.2 43.7 49.2
36
41.5 47
32
38
44
tbd
–
tbd
Hysteresis B_HYS
Min. Typ. Max.
0.5
2
4
0.5
2
4
0.5
2
4
tbd
–
tbd
Magnetic Offset
Unit
Min. Typ. Max.
44.7
mT
42.5
mT
39
mT
tbd
mT
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
Micronas
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