HAL320 datasheet(7/13 Pages) ETC

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HAL320

Micronas

Magnetic Characteristics at TJ = –40 °C to +170 °C, VDD = 4.5 V to 24 V

Typical Characteristics for VDD = 12 V

Magnetic flux density values of switching points (Condition: –10 mT < B0 < 10 mT)

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

∆B = BS1 – BS2

Parameter

–40

°C

100

°C

170

°C

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

Min.

Typ.

Max.

On point

∆BON

∆B > ∆BON

–1.5

1.2

2.5

-1.5

1.2

2.5

–2

1.2

–2.5

1.1

3.5

Off point

∆BOFF

∆B < ∆BOFF

–2.5

–0.6

1.5

–2.5

–0.6

1.5

–3

–0.5

–3.5

–0.4

2.5

Hysteresis

∆BHYS = ∆BON – ∆BOFF

1.8

1.7

0.8

1.5

Offset

∆BOFFSET =

(∆BON + ∆BOFF)/2

–2

0.3

–2

0.3

–2.5

0.4

2.5

–3

0.4

In back-biased applications, sensitivity mismatch between the two Hall plates S1 and S2 can lead to an additional offset

of the magnetic switching points. In back-biased applications with the magnetic preinduction B0, this sensitivity mis-

match generates the magnetic offset

∆BOFFSETbb = |S1 – S2|/S1 @ B0 + ∆BOFFSET.

Parameter

–40

°C

100

°C

170

°C

Unit

Sensitivity mismatch1)

|S1 – S2|/S1

1.52)

1.02)

0.52)

1) Mechanical stress from packaging can influence sensitivity mismatch.

2) All values are typical values.

The magnetic switching points are checked at room temperature at a magnetic preinduction of B0 = 150 mT.

These magnetic parameters may change under external pressure and during the lifetime of the sensor.

Parameter

°C

Unit

Min.

Typ.

Max.

On point

∆BONbb

–4.5

1.5

5.5

Off point

∆BOFFbb

–5.5

–0.3

4.5

Hysteresis

∆BHYS

1.8

Offset

∆BOFFSETbb

–5

0.6

DBOFF min

DBON max

DBHYS

Output Voltage

Fig. 7: Definition of switching points and hysteresis

DBOFF

DBON

DB = BS1 – BS2

VOH

VOL

Fig. 8: Recommended pad size for SOT-89A and

SOT-89B; Dimensions in mm

5.0

2.0

1.0

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