AK8789

4:OUT1
3:OUT2
1:VDD
Switch
Dynamic
Offset Cancellation
2:VSS
Output
Stage
AMP
Chopper
SW
Hall
Element
OSC
&
Timing Logic
Schmitt
Trigger
&
Latch
0
BopNBrpN
BhN
H
V
OL
L
V
OUT1
V
OH
VOH
0
BopS BrpS
BhS
H
V
OL
L
V
OUT2
S or N
N or S
Package top
Package bottom
N S
Magnetic flux density Magnetic flux density
●Functional Block Diagram
●Operational Characteristics
(N pole)
(S pole)
Item
OSC
Timing Logic
Hall Element
Chopper SW
AMP
Schmitt Trigger
Generates operating clock
Generates timing signal requires for Chopper SW,
AMP and other circuits
Hall element fabricated by CMOS process
Performs chopping in order to cancel the offset
voltage of Hall sensor
Reduce offset voltage and amplies Hall output voltage
Hysteresis comparator
CMOS output, During the power down mode, output
is latched in its previous state
Function
Latch Logic
Output Stage
25
Monolithic Hall E
VDD
IOUT
TSTG
6.5
0.5
125
0.3
0.5
55
V
mA
V
DD
Ta
5.5
85
V
1.851.6
30
I
DD
VOH
VOL
TPD1
T
PD2
9
0.4
100
292
6.5
50
146
V
DD
0.4
25
73
μA
V
V
ms
μs
I
OUT
=0.5mA
I
OUT =+0.5mA
BopN
BopS
BrpN
BrpS
BhN,BhS
3.2
1.4
3.0
1.2
2.5
2.5
2.0
2.0
0.5
1.4
3.2
1.2
3.0
0.1
mT
mT
mT
mT
mT
BopN
BopS
BrpN
BrpS
BhN,BhS
3.9
1.3
3.7
0.9
2.5
2.5
2.0
2.0
0.5
1.3
3.9
0.9
3.7
0.1
mT
mT
mT
mT
mT
●Electrical Characteristics
●Magnetic Characteristics①
●Magnetic Characteristics②
Item
Typ.
Unit
symbol
Min. NoteMax.
Item
Typ.
Unit
symbol
Min. Max.
Item
Typ.
Unit
symbol
Min.
Max.
High level output voltage
Low level output voltage
Pulse drive period
Pulse drive time
Current consumption
Note) The above specifications are guaranteed by design.
Releasing points
H y s t e r e s i s
Operating points
Note) The characteristics with *marks are guaranteed by design.
Releasing points
H y s t e r e s i s
Operating points
(Ta=25℃ VDD =1.85V)
(Ta=25℃ V
DD =1.85V)
(Ta=30∼+85 V
DD =1.6∼5.5V
●Absolute Maximum Ratings
●Recommended Operating Conditions
Item tinU.niM
symbol
Max.
Storage temperature
Item
Typ.
Unit
symbol
Min.
Max.
Output current
Power supply voltage
Note) Stresses beyond these listed values may cause permanent damage to the device.
Operating temperature
Power supply voltage
Average
26
•Please be aware that our products are not intended for use in life support equipment, devices, or systems. Use of our products in such applications requires the
advance written approval of our sales staff.
Certain applications using semiconductor devices may involve potential risks of personal injury, property damage or loss of life. In order to minimize these risks,
adequate design and operating safeguards should be provided by the customer to minimize inherent or procedural hazards. Inclusion of our products in such
applications is understood to be fully at the risk of the customer using our devices or systems.
AK8789
a
f
k
n
o
p
50ms(typ.)
Time
146μstyp.)
I
DD ON
(typ=1.8mA
IDD
(typ=6.5μA
IDD OFF
(typ=1.3μA
I
DD
B
Bop
V
OUT
High
Low
t
t
t
I
DD
B
Brp
V
OUT
48.8μs(typ.
48.8μs(typ.
High
Low
t
t
t
Operating Point Timing Releasing Point Timing
1.10
0.80
0.50
0.22
0.60
1.40
1.70
0.35
0.22
0.50
1.00
(0.125)
0.37
(0.23)
0.20
1.40
0.80
0.60
Sensor Center
No.
1
2
3
4
VDD
VSS
OUT2
OUT1
Function
Power supply
Ground
S pole detection output
N pole detection output
Note
CMOS Output
CMOS Output
Pin name
●PackageUnit:mm)
※Note 1) Sensitive area position referenced to
the center of package within φ0.3mm circle.
Note 2) Tolerances of dimension otherwise noted is
±0.05mm.
Note 3) Hatched area is plated.
Note 4) Center pad area (TAB) should be tied to the
VSS or floating
●Footprintfor reference)
●I
DD Timing Chart ●Functional Timing Chart
Note) Hall effect IC's output is held as internal data just before the
internal circuit turns off. And after 48.8ms (typ.) the output changes.
27
AK8789

AK8789

Mfr. #:
Manufacturer:
Description:
MAGNETIC SWITCH OMNIPOLAR 4SON
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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