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PDF AK8777B Data sheet ( Hoja de datos )
| Número de pieza | AK8777B | |
| Descripción | Hall Effect IC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK8777B]
AK8777B
Hall Effect IC for Pulse Encoders
Overview
The AK8777B is a Hall effect latch which detects both “vertical” and “horizontal”(perpendicular and parallel to the
marking side of the package) magnetic field at the same time. The output OUTA and OUTB are switched according
to the vertical and horizontal magnetic fields applied to the device. The AK8777B is for use in the incremental pulse
encoders or rotational detection systems.
Features
4.0 to 24V supply voltage operation
Sensitivity (Vertical, Horizontal) : ±1.7mT(Typ.)
Two outputs : OUTA (detects vertical magnetic field), OUTB (detects horizontal magnetic field)
Small package: SOP-6pin
Halogen free
MS1465-E-00
September 2012
1
Free Datasheet http://www.datasheet4u.com/
1 page  
[AK8777B]
Operational Characteristics
The signal OUTA switches „Low‟ state (ON) when the magnetic field perpendicular to the marking side of the
package exceeds BopV. When the magnetic field is reduces below BrpV, the OUTA goes „High‟ state (OFF).
Otherwise; that is, in case of the magnetic field strength is greater than BrpV and smaller than BopV; OUTA keeps
its status.
Top(Marking)
S
Bottom
N
Signal OUTA
BhV
BrpV
0
N
BopV
S
Figure 2. Switching behavior of the signal OUTA when vertical magnetic field is applied
The signal OUTB switches „Low‟ state (ON) when the magnetic field parallel to the marking side of the package
exceeds BopH. When the magnetic field is reduces below BrpH, the OUTB goes „High‟ state (OFF). Otherwise; that
is, in case of the magnetic field strength is greater than BrpH and smaller than BopH; OUTB keeps its status.
Line Marking
Top(Marking)
N
VSS pin
S
Signal OUTB
BhH
BrpH
BopH
Bottom
OUTB pin
N
0
S
Figure 3. Switching behavior of the signal OUTB when horizontal magnetic field is applied
MS1465-E-00
September 2012
5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AK8777B.PDF ] | |
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