HAL501 datasheet(28/48 Pages) MICRONAS

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HAL 504

DATA SHEET

April 15. 2010; DSH000020_004EN

Micronas

4.4. HAL 504

The HAL 504 is a unipolar switching sensor (see

Fig. 4–13).

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.

For correct functioning in the application, the sensor

requires only the magnetic south pole on the branded

side of the package.

Magnetic Features:

– switching type: unipolar,

– medium sensitivity

–typical BON: 12 mT at room temperature

–typical BOFF: 7 mT at room temperature

– typical temperature coefficient of magnetic switching

points is

−1000 ppm/K

– operates with static magnetic fields and dynamic

magnetic fields up to 10 kHz.

Applications

The HAL 504 is the optimal sensor for applications

with one magnetic polarity such as:

– solid state switches,

– contactless solution to replace microswitches,

– position and end-point detection, and

– rotating speed measurement.

Fig. 4–13: Definition of magnetic switching points for

the HAL 504

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.

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

BOFF

BON

VOL

Output Voltage

BHYS

Parameter

On point BON

Off point BOFF

Hysteresis BHYS

Magnetic Offset

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

−40 °C

10.3

15.7

5.3

7.5

9.6

4.4

5.5

6.5

−

10.2

−

°C

9.5

14.5

56.5

7.2

9.5

11.8

140

°C

8.7

10.6

13.9

4.4

6.1

8.6

3.4

4.5

6.4

−

8.4

−

170

°C

8.5

10.2

13.7

4.2

5.9

8.5

3.2

4.3

6.4

−

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