HAL740 datasheet(16/22 Pages) MICRONAS

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HAL700

DATA SHEET

Nov. 30, 2009; DSH000029_002EN

Micronas

4. Type Description

4.1. HAL700

The HAL700 consists of two independent latched

switches (see Fig. 4–1) with closely matched magnetic

characteristics controlling two independent open-drain

outputs. The Hall plates of the two switches are

spaced 2.35 mm apart.

In combination with an active target providing a

sequence of alternating magnetic north and south

poles, the sensor forms a system generating the sig-

nals required to control position, speed, and direction

of the target movement.

Magnetic Features

– two independent Hall-switches

– distance of Hall plates: 2.35 mm

–typical BON: 14.9 mT at room temperature

–typical BOFF: −14.9 mT at room temperature

– temperature coefficient of

−2000 ppm/K in all mag-

netic characteristics

– operation with static magnetic fields and dynamic

magnetic fields up to 10 kHz

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

the HAL700

Positive flux density values refer to magnetic south

pole at the branded side of the package.

Applications

The HAL700 is the ideal sensors for position-control

applications with direction detection and alternating

magnetic signals such as:

– multipole magnet applications,

– rotating speed and direction measurement,

position tracking (active targets), and

– window lifters.

Magnetic Thresholds

(quasistationary: dB/dt<0.5 mT/ms)

at TJ = −40 °C to +140 °C, VDD = 3.8 V to 24 V,

as not otherwise specified

Typical characteristics for TJ = 25 °C and VDD = 5 V

Matching BS1 and BS2

(quasistationary: dB/dt<0.5 mT/ms)

at TJ = −40 °C to +140 °C, VDD = 3.8 V to 24 V,

as not otherwise specified

Typical characteristics for TJ = 25 °C and VDD = 5 V

Hysteresis Matching

(quasistationary: dB/dt<0.5 mT/ms)

at TJ = −40 °C to +140 °C, VDD = 3.8 V to 24 V,

as not otherwise specified

Typical characteristics for TJ = 25 °C and VDD = 5 V

BOFF

BON

VOL

Output Voltage

BHYS

Para-

meter

On-Point

BS1on, BS2on

Off-Point

BS1off,, BS2off

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

−40 °C

12.5

16.3

−20

−16.3 −12.5 mT

25 °C

10.7

14.9

19.1

−19.1 −14.9 −10.7 mT

100 °C

7.7

12.5

17.3

−17.3 −12.5 −7.7

140 °C

6.0

10.9

16.0

−16.0 −10.9 −6.0

Para-

meter

BS1on − BS2on

BS1off − BS2off

Unit

Min.

Typ

Max.

Min.

Typ

Max.

−40 °C

−7.5

7.5

−7.5

7.5

25 °C

−7.5

7.5

−7.5

7.5

100 °C

−7.5

7.5

−7.5

7.5

140 °C

−7.5

7.5

−7.5

7.5

Parameter

(BS1on − BS1off) / (BS2on − BS2off)

Unit

Min.

Typ.

Max.

−40 °C

0.85

1.0

1.2

−

25 °C

0.85

1.0

1.2

−

100 °C

0.85

1.0

1.2

−

140 °C

0.85

1.0

1.2

−

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