AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
AH1822 Rev. 5 5 of 9 FEBRUARY 2009
www.diodes.com ?/SPAN> Diodes Incorporated
Magnetic Characteristics (TA=25?/SPAN>C, Vdd=3V, Note 6, 7)
(1mT=10 Gauss)
Symbol
Characteristic
Min
Typ.
Max
Unit
Bops(south pole to brand side)
Operate Point
-
28
55
Gauss
Bopn(north pole to brand side)
-55
-28
-
Brps(south pole to brand side)
Release Point
10
20
-
Brpn(north pole to brand side)
-
-20
-10
Bhy(
Brpx
Bopx
)
Hysteresis
5
8
-
Notes: 6. Typical data is at Ta = 25癈, Vdd = 3V, and for design information only.
7. Operating point and release point will vary with supply voltage and operating temperature.
Bhy
Vsat
Vcc
Bopn Brpn 0
( Magnetic flux density B )
Output
Turn on
Turn off
( off-state )
( on-state )
Bhy
Vsat
Vcc
Brps Bops
0
( Magnetic flux density B )
Output
Turn off
Turn on
( off-state )
( on-state )
TA (?/SPAN>C)
25
50
60
70
80
85
90
100
110
120
130
140
150
PD (mW)
230 184 166 147 129 120 110
92
74
55
37
18
0
Power Dissipation Curve
0
100
200
300
0
25
50
75
100
125
150
T A ( C)
P D (m W )
85
Performance Characteristics
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