HAL55x, HAL56x

DATA SHEET

22

Aug. 11, 2009; DSH000026_004EN

Micronas

4.3. HAL566

The HAL 566 is a very sensitive unipolar switching sen-

sor with an inverted output (see Fig. 4–9).

The sensor turns to low current consumption with the

magnetic south pole on the branded side of the pack-

age and turns to high current consumption if the mag-

netic field is removed. It does not respond to the mag-

netic 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 HAL55x, HAL56x two-wire sensor family, the

HAL556 is a sensor with the same magnetic charac-

teristics but with a normal output characteristic.

Magnetic Features:

– switching type: unipolar inverted

– high sensitivity

– operates with static magnetic fields and dynamic

magnetic fields up to 10 kHz

Applications

The HAL566 is designed for applications with one

magnetic polarity and weak magnetic amplitudes at

the sensor position where an inverted output signal is

required such as:

– applications with large airgap or weak magnets,

– solid state switches,

– contactless solutions to replace micro switches,

– position and end point detection, and

– rotating speed measurement.

Fig. 4–9: Definition of magnetic switching points for

the HAL566

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

Current consumption

B

Parameter

Magnetic Offset

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

−40 °C

2.1

4

5.9

3.4

6

7.7

0.8

2

2.8

−

5

−

mT

25

°C

2

3.9

5.7

3.4

5.9

7.2

0.5

2

2.7

3

4.9

6.2

mT

100

°C

1.85

3.8

5.7

3.25

5.6

7

0.3

1.8

2.6

−

4.7

−

mT

140

°C

1.3

3.6

6

2.6

5.2

7.3

0.2

1.6

3

−

4.4

−

mT