AH1887 View Datasheet(PDF) - Diodes Incorporated.
Part Name
Description
MFG CO.
AH1887 Datasheet PDF : 7 Pages
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AH1887
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
Electrical Characteristics (TA = 25°C, Vdd = 1.8V, unless otherwise specified)
Symbol
VOH
VOL
Idd(en)
Idd(dis)
Idd(avg)
Tawake
Tperiod
D.C.
Characteristic
Conditions
Min Typ. Max Unit
Output On Voltage (High side)
Output On Voltage (Low side)
Supply Current
IO= -0.5mA
IO= 0.5mA
Chip enable
Chip disable
Vdd-0.2 -
-
V
-
-
0.2
V
-
2
4
mA
-
5
8
uA
average supply current
-
7
12
uA
Awake Time
-
50 100
µs
Period
-
50 100 ms
Duty Cycle
-
0.1
-
%
Magnetic Characteristics (TA = 25°C, Vdd = 1.8V~3.0V, Note 2, 3, 4)
Symbol
Characteristic
Min
Typ.
(1mT=10 Gauss)
Max
Unit
Bops(south pole to brand side)
-
35
Operate Point
Bopn(north pole to brand side)
-50
-35
Brps(south pole to brand side)
6
20
Release Point
Brpn(north pole to brand side)
-
-20
Bhy(|Bopx|-|Brpx|)
Hysteresis
3
15
50
-
-
Gauss
-6
-
Notes:
2. Typical data is at Ta = 25°C, Vdd = 3V, and for design information only.
3. Bops & Brps for Output 1 responds to South pole; Bopn & Brpn for Output 2 responds to North pole.
4. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Output2
Output1
Vdd ( off-state )
Turn on
Bhy
Turn off
( on-state )
Vsat
N
Bopn Brpn 0
S
( Magnetic flux density B )
( off-state ) Vdd
Turn off
Bhy
Turn on
Vsat
( on-state )
N
0 Brps Bops
S
( Magnetic flux density B )
AH1887
Document number: DS31313 Rev. 4 - 2
3 of 7
www.diodes.com
August 2010
© Diodes Incorporated
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