HAL 503
DATA SHEET
4.3. HAL 503
Applications
The HAL 503 is a latching sensor (see Fig. 4–9).
The HAL 503 is the optimal sensor for applications
with alternating magnetic signals such as:
The output turns low with the magnetic south pole on
the branded side of the package and turns high with
the magnetic north pole on the branded side. The out-
put does not change if the magnetic field is removed.
For changing the output state, the opposite magnetic
field polarity must be applied.
– multipole magnet applications,
– rotating speed measurement,
– commutation of brushless DC motors, and
– window lifters.
For correct functioning in the application, the sensor
requires both magnetic polarities (north and south) on
the branded side of the package.
Output Voltage
VO
Magnetic Features:
BHYS
– switching type: latching
– medium sensitivity
VOL
– typical BON: 7.6 mT at room temperature
– typical BOFF: −7.6 mT at room temperature
B
BOFF
0
BON
– operates with static magnetic fields and dynamic
magnetic fields up to 10 kHz
Fig. 4–9: Definition of magnetic switching points for
the HAL 503
– typical temperature coefficient of magnetic switching
points is −1000 ppm/K
Magnetic Characteristics at TJ = −40 °C to +170 °C, VDD = 3.8 V to 24 V,
Typical Characteristics for VDD = 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
On point B
Typ.
8.4
Off point B
Typ.
Hysteresis B
HYS
Magnetic Offset
Unit
ON
OFF
T
Min.
6.4
6
Max.
10.8
10
Min.
Max.
Min.
Typ.
17
Max.
Min.
Typ.
−0.1
0
Max.
J
−40 °C
25 °C
−10.8
−10
−8.6
−7.6
−6.4
−6
−6.4
−6
14.6
13.6
11.5
11
20.6
18
−
−
mT
mT
mT
mT
7.6
15.2
13.1
12.4
−1.5
−
1.5
−
140 °C
170 °C
4.4
4
6.7
9.2
−9.2
−8.9
−4.4
−4
16.5
16
0.1
0.2
6.4
8.9
−
−
The hysteresis is the difference between the switching points BHYS = BON − BOFF
The magnetic offset is the mean value of the switching points BOFFSET = (BON + BOFF) / 2
26
Jan. 11. 2010; DSH000020_004EN
Micronas
MICRONAS [ MICRONAS ]
