磁敏传感器

磁敏传感器

来源：霍芯电子时间：2011-08-27

Switch

The following variations of switch type Hall effect ICs are available:

- Single pole detection switch	- Two pole detection switch
Continuous excitation type Pulse excitation type	Single output type Dual output type

Unipolar Hall effect IC

Explanation of operation

On/off is switched depending on the intensity of the magnetic field of the S-pole of the magnet. This type is used for position detection.

Operation diagram

When the S-pole of the magnet approaches the marked side of the Hall effect IC and the magnetic flux density exceeds Bop, Vout changes from H to L.

When the S-pole of the magnet leaves the marked side of the Hall effect IC and the magnetic flux density decreases below Brp, Vout changes from L to H.

Product list(Continuous excitation type)
The Hall element in the Hall effect IC is always powered. Operating ambient temperature is -30°C to 115°C.

Operating Voltage Range
Supply Voltage
(Vcc)

Package Size
(mm)

Output H to L Magnetic Flux Density
Operating Point (Bop)

High sensitivity: 3[mT]

Normal sensitivity: 6[mT]

Low sensitivity:10[mT]

4.5 to 26.4[V]
(Typ. 12)

4.4

3.6

1.2

EW-450B

3.1

3.0

1.0

EW-650B
EW-652B

3.0

4.1

1.15

EW-750B
EW-752B

2.5 to 5.5[V]
(Typ. 3)

4.4

3.6

1.2

EW-463

(*Manufactured to order)

EW-453

(*Manufactured to order)

Note: SMT - Package size includes the leads. SIP - Package size does not include the leads.

Product list(Pulse excitation type (Micro-Power))
The Hall element in the Hall effect IC is pulse driven for low power operation.
Operating ambient temperature -30°C to - 85°C.

Operating Voltage Range
Supply Voltage
(VDD)

Package Size

Output H to L Magnetic Flux Density
Operating Point (Bop)

Hypersensitivity Typ. 1.5 [mT]

High sensitivity Typ. 3 [mT]

1.6 to 5.5[V]
(Typ. 1.8)

2.1

0.55

EM-1771

1.2

1.8

0.45

EM-0771

2.4 to 3.3 [V]
(Typ.3)

3.1

3.0

1.0

EW-6672

Note: SMT - Package size includes the leads.

Omnipolar Hall effect IC One output for S or N pole
Explanation of operation On/off is switched depending on the intensity of the magnetic field of the S-pole or N-pole of the magnet.
Operation diagram

When the S-pole or N pole of the magnet approaches the marked side of the Hall effect IC and the magnetic flux density exceeds BopS or BopN, Vout changes from H to L. When the S-pole or N-pole of the magnet leaves the marked side of the Hall effect IC and the magnetic flux density decreases below BrpS or BrpN, Vout changes from L to H.

Product list(Pulse excitation type)
The Hall element in the Hall effect IC is pulse driven for power-saving. Operating ambient temperatur is :-30°C to 85°C.

Operating Voltage Range
Supply Voltage
(VDD)

Package Size
(mm)

Output H to L Magnetic Flux Density Operating Point (Bop)

High sensitivity Typ. 3 [mT]

1.6 to 5.5 [V]
(Typ. 1.8)

3.1

3.0

1.0

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