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PDF AH1891 Data sheet ( Hoja de datos )

Número de pieza AH1891
Descripción MINIATURE MICROPOWER OMNIPOLAR HALL EFFECT SWITCH
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No Preview Available ! AH1891 Hoja de datos, Descripción, Manual

AH1891
MINIATURE MICROPOWER OMNIPOLAR
HALL EFFECT SWITCH
Description
The AH1891 is a miniature micropower Omnipolar Hall effect
switch IC with dual outputs specifically designed for portable
and battery powered equipment such as cellular phones and
portable PCs. To support battery powered equipment the
AH1891 has been optimized to operate over the supply range
of 1.8V to 3.3V and uses a sleep function to give an average
supply current of only 7uA. To minimize PCB space the
AH1891 is packaged in the small CSP package
(0.8mmx0.8mm) and the design integrates the external pull
up resistors to simplify the applications circuit.
Pin Assignments
(Top View)
A1 A2
The outputs of the AH1891 are switched with either a North or
South pole of sufficient strength. When the magnetic flux
density (B) is larger than operate point (Bop), Output 1 will
pull low and Output 2 will be inverted (high). The output states
are held until B is lower than release point (Brp).
B1 B2
The AH1891 is available in U-WLB0808-4 package.
(Bottom View)
A2 A1
B2 B1
Features
Omnipolar (North or South) operation
Low supply voltage of 1.8V to 3.3V
Micropower operation
Dual outputs for design flexibility
Internal pull up and pull down capability
Chopper stabilized design for:
o Superior temperature stability
o Superior temperature stability
o Superior temperature stability
Good RF noise immunity
-40°C to 85°C Operating Temperature
ESD 4KV in Human Body Mode
Miniature CSP package 0.8mm x 0.8mm
Applications
Cellular phones
Portable PCs and PDAs
www.DataSheet.co.kr
Digital cameras
Portable and battery powered applications
Typical Application Circuit
Vdd
GND
AH1891
Output 1
Output 2
AH1891
Document number: DS35207 Rev. 1 - 2
1 of 7
www.diodes.com
April 2011
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.net/

1 page




AH1891 pdf
AH1891
MINIATURE MICROPOWER OMNIPOLAR
HALL EFFECT SWITCH
Performance Characteristics
(1) U-WLB0808-4
TA (°C) 25 50 60 70 80 85 90 100 110 120 130 140 150
PD (mW) 166 132 120 105 93 86 79 66 53 39 26 13
0
PD (mW)
200
Power Dissipation Curve (AH1891-CSP)
150
100
50
0
0-40
25
50
75www.DataSheet.co.kr
85
100
TA (oC)
125
150
Ordering Information
AH1891 - CA4 - 7
Package
U-WLB0808-4
Packing
7 : Tape & Reel
Device
(Note 3)
AH1891-CA4-7
Package
Code
CA4
Packaging
(Note 4)
U-WLB0808-4
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
Notes:
3. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AH1891
Document number: DS35207 Rev. 1 - 2
5 of 7
www.diodes.com
April 2011
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.net/

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