DATA SHEET

HAL543

Micronas

Feb. 12, 2009; DSH000023_003EN

21

4.2. HAL543

The HAL543 is the most insensitive unipolar sensor of

this family (see Fig. 4–4).

The output turns low with the magnetic south pole on

the branded side of the package and turns high if the

magnetic field is removed. The sensor does not

respond to the magnetic north pole on the branded

side.

Magnetic Features:

– switching type: unipolar

– low sensitivity

– operates with static magnetic fields and dynamic

magnetic fields up to 10 kHz

– points is

−1000 ppm/K

Applications

The HAL543 is the optimal sensor for applications with

unipolar magnetic signals and large magnetic ampli-

tude at the sensor position such as:

– position and end-point detection,

– contactless solution to replace microswitches,

– rotating speed measurement.

Fig. 4–4: Definition of magnetic switching points for

the HAL543

Magnetic flux density values of switching points.

Positive flux density values refer to the magnetic south pole at the branded side of the package.

0

Output Voltage

B

Parameter

Magnetic Offset

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

−40 °C

21

27331521

274

6

8

−

24

−

mT

25

°C

21

27331521

274

6

8

18

24

30

mT

100

°C

21

27331521

274

6

8

−

24

−

mT

140

°C

21

27331521

274

5.5

8

−

24

−

mT