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AH1884
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
 
AH1884  
Document number: DS31171 Rev. 6 - 2 
3 of 7
www.diodes.com
September 2010
?Diodes Incorporated 
Electrical Characteristics (T
A
 = 25?/SPAN>C, Vdd = 1.8V, unless otherwise specified) 
 
Symbol
Characteristic
Conditions
Min
Typ.
Max
Unit
V
OH
 
Output On Voltage (High side)
I
O
= -0.5mA
Vdd-0.2
-
-
V
V
OL
 
Output On Voltage (Low side)
I
O
= 0.5mA
-
-
0.2
V
Idd(en)
Supply Current
Chip enable
-
2
4
mA
Idd(dis)
Chip disable
-
5
8
uA
Idd(avg)
average supply current
-
7
12
uA
Tawake
Awake Time
 
-
50
100
祍
Tperiod
Period
 
-
50
100
ms
D.C.
Duty Cycle
 
-
0.1
-
%
 
Magnetic Characteristics (T
A
 = 25?/SPAN>C, Vdd = 1.8V~3.0V, Note 1 & 2) 
 
(1mT=10 Gauss)
Symbol
Characteristic
Min
Typ.
Max
Unit
Bops(south pole to brand side)
Operate Point
-
37
55
Gauss
Bopn(north pole to brand side)
-55
-37
-
Brps(south pole to brand side)
Release Point
15
29
-
Brpn(north pole to brand side)
-
-29
-15
Bhy(|Bopx|-|Brpx|)
Hysteresis
3
8
-
Notes:     1. Typical data is at Ta = 25癈, Vdd = 3V, and for design information only.
    2. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
 
Bhy
V
sat
Vdd
Bopn    Brpn  0
( Magnetic flux density B )
Output1
Turn on
Turn off
( off-state )
( on-state )
Bhy
Vsat
Vdd
Brps   Bops
0
( Magnetic flux density B )
Output1
Turn off
Turn on
( off-state )
( on-state )
 
 
 
 
 
 
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