[AK8775]
MS1316-E-00 2011/July
4
The output OUTA and OUTB is determined by the applied magnetic field and threshold level BopV, BrpV, BopH
and BrpH as follows.
Table 6. Magnetic characteristics(Ta = 25°C, V
DD
= 3.0V)
Parameter Symbol Min. Typ. Max. Unit Note
Vertical magnetic field
operating point
BopV 1.5 4.0 mT (*1)
Vertical magnetic field
releasing point
BrpV
4.0 1.5
mT (*1)
Horizontal magnetic field
operating point
BopH 1.5 4.0 mT (*2)
Horizontal magnetic field
releasing point
BrpH
4.0 1.5
mT (*2)
Hysteresis BhV, BhH 3.0 mT (*1), (*2)
(*1) Horizontal magnetic flux density is zero.
(*2) Vertical magnetic flux density is zero.
Magnetic Characteristics
[AK8775]
MS1316-E-00 2011/July
5
AK8775 detects the vertical (perpendicular to the marking side of the package) magnetic field, and the resulting
output signal OUTA changes state. When the magnetic field is more positive than BopV, the signal OUTA changes
to Low state. And it is kept while the magnetic field remains more positive than BrpV. When the magnetic field
drops below BrpV, the signal OUTA changes to High state. Those threshold magnetic flux density levels are
defined in Table 6.
AK8775 detects horizontal (parallel to the marking side of the package) magnetic field, and the resulting output
signal OUTB changes state. When the magnetic field is more positive than BopH, the signal OUTB changes to
Low state. And it is kept while the magnetic field remains more positive than BrpH. When the magnetic field drops
below BrpH, the signal OUTB changes to High state. Those threshold magnetic flux density levels are defined in
Table 6.
S
N
Top(Marking)
Bottom
BhV
Output
BopV
BrpV
S [T] N [T]
0
Figure 2. Switching behavior of output signal OUTA
when vertical magnetic field is applied
BhH
Output
BopH
BrpH
S [T] N [T]
0
Figure 3. Switching behavior of output signal OUTB
when horizontal magnetic field is applied
Operational Characteristics
S
Top(Marking)
Line Marking
Bottom
OUTB pin
VSS pin
[AK8775]
MS1316-E-00 2011/July
6
*M.F.D. is Magnetic Flux Density.
Note)V
DD
=3.0V.
Current consumption
Vertical M.F.D.
Horizontal M.F.D.
OUTA
(Vertical)
BopV
BrpV
BopH
BrpH
T
PD2
(Typ. 24.4μs) T
PD1
(Typ. 1.0ms)
6.1μs(Typ.)
t
t
t
t
t
I
DD ON
(Typ. 3.5mA)
OUTB
(Horizontal)
6.1μs(Typ.)
6.1μs(Typ.) 6.1μs(Typ.)
Figure 4. The timing chart of current consumption
and transition timing of output signal
Functional Timing

AK8775

Mfr. #:
Manufacturer:
Description:
MAGNETIC SWITCH LATCH 4SOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet