AK8778B Ver la hoja de datos (PDF) - Asahi Kasei Microdevices

Número de pieza

componentes Descripción

Fabricante

AK8778B

Hall Effect IC for Pulse Encoders

Asahi Kasei Microdevices 

[AK8778B]

Operational Characteristics

The internal signal A switches „Low‟ state when the magnetic field perpendicular to the marking side of the package

exceeds BopV. When the magnetic field is reduced below BrpV, the internal signal A goes „High‟ state. Otherwise;

that is, in case of the magnetic field strength is greater than BrpV and smaller than BopV; the internal signal A keeps

its status.

S

Top(Marking)

Bottom

N

Internal signal A

BhV

BrpV

0

N

BopV

S

Figure 2. Switching behavior of the internal signal A when vertical magnetic field is applied

The internal signal B switches „Low‟ state when the magnetic field parallel to the marking side of the package

exceeds BopH. When the magnetic field is reduced below BrpH, the internal signal B goes „High‟ state. Otherwise;

that is, in case of the magnetic field strength is greater than BrpH and smaller than BopH; the internal signal B keeps

its status.

Line Marking

Top(Marking)

N

VSS pin

S

Internal signal B

BhH

BrpH

BopH

Bottom

0

D pin

N

S

Figure 3. Switching behavior of the internal signal B when horizontal magnetic field is applied

MS1466-E-00

September 2012

5

Share Link: