HAL 505
DATA SHEET
4.5. HAL 505
Applications
The HAL 505 is a latching sensor (see Fig. 4–17).
The HAL 505 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
BHYS
Magnetic Features:
– switching type: latching,
VOL
– low sensitivity
B
– typical BON: 13.5 mT at room temperature
– typical BOFF: −13.5 mT at room temperature
BOFF
0
BON
Fig. 4–17: Definition of magnetic switching points for
– operates with static magnetic fields and dynamic
magnetic fields up to 10 kHz
the HAL 505
– 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.
Off point B
Typ.
Hysteresis B
HYS
Magnetic Offset
Unit
ON
OFF
T
Min.
11.8
11
Max.
18.3
17
Min.
Max.
Min.
Typ.
30
Max.
Min.
Typ.
Max.
J
−40 °C
25 °C
15
-18.3
-17
-15
-11.8
-11
26
24
21
20
34
−
0
0
0
0
−
mT
mT
mT
mT
13.5
-13.5
-12
27
32
-1.5
−
1.5
−
140 °C
170 °C
9.7
12
16.3
16.1
-16.3
-16.1
-9.7
-9.4
24.2
23.4
31.3
31.3
9.4
11.7
-11.7
−
−
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
30
Jan. 11. 2010; DSH000020_004EN
Micronas
MICRONAS [ MICRONAS ]
