HAL501 datasheet(32/48 Pages) MICRONAS

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HAL 506

DATA SHEET

April 15. 2010; DSH000020_004EN

Micronas

4.6. HAL 506

The HAL 506 is the most sensitive unipolar switching

sensor of this family (see Fig. 4–21).

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.

In the HAL 5xx family, the HAL 516 is a sensor with

the same magnetic characteristics but with an inverted

output characteristic.

Magnetic Features:

– switching type: unipolar,

– high sensitivity

–typical BON: 5.5 mT at room temperature

–typical BOFF: 3.5 mT at room temperature

– operates with static magnetic fields and dynamic

magnetic fields up to 10 kHz

– typical temperature coefficient of magnetic switching

points is

−1000 ppm/K

Applications

The HAL 506 is the optimal sensor for all applications

with one magnetic polarity and weak magnetic ampli-

tude at the sensor position such as:

– applications with large air gap or weak magnets,

– solid state switches,

– contactless solution to replace microswitches,

– position and end point detection, and

– rotating speed measurement.

Fig. 4–21: Definition of magnetic switching points for

the HAL 506

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

4.3

5.9

7.7

2.1

3.8

5.4

1.6

2.1

2.8

−

4.8

−

°C

3.8

5.5

7.2

3.5

1.5

2.7

3.8

4.5

6.2

140

°C

3.4

4.8

6.9

1.8

3.1

5.1

1.7

2.6

−

170

°C

3.2

4.6

6.8

1.7

5.2

0.9

1.6

2.6

−

3.8

−

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