HAL573 Просмотр технического описания (PDF) - Micronas

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HAL573

Two-Wire Hall-Effect Sensor Family

Micronas 

DATA SHEET

HAL 573

4. Type Descriptions

4.1. HAL573

The HAL573 is a unipolar switching sensor with low

sensitivity (see Fig. 4–1).

The sensor turns to high current consumption with the

magnetic south pole on the branded side of the pack-

age and turns to low 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.

Magnetic Features:

– switching type: unipolar

– low sensitivity

– typical BON: 43.5 mT at room temperature

– typical BOFF: 41.5 mT at room temperature

– typical temperature coefficient of magnetic switching

points is −1100 ppm/K

– operates with static magnetic fields and dynamic

magnetic fields up to 10 kHz

Applications

The HAL573 is designed for applications with one

magnetic polarity and weak magnetic amplitudes at

the sensor position such as:

– solid state switches,

– contactless solutions to replace micro switches,

– position and end point detection, and

– rotating speed measurement.

Current consumption

BHYS

IDDhigh

IDDlow

0

BOFF

BON

B

Fig. 4–1: Definition of magnetic switching points for

the HAL573

Magnetic Characteristics at TJ = −40 °C° to +140 °C, VDD = 3.75 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 BON

TJ

Min. Typ. Max.

−40 °C 37

44.2 49

Off point BOFF

Min. Typ. Max.

34

42

48

Hysteresis BHYS

Min. Typ. Max.

0.5

2.2

5

Magnetic Offset

Min. Typ. Max.

44.6

Unit

mT

25 °C 37

43.5 49

34

41.5 47

0.5

2

5

42.5

mT

100 °C 34

40

46

32

38

44

0.5

2

5

39

mT

140 °C 34

38

46

32

36

44

0.2

2

5

39

mT

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

Micronas

Dec. 22, 2008; DSH000145_003EN

19

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