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AH1801

ULTRA-SENSITIVE HALL EFFECT SWITCH


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AH1801 pdf
Features
AH1801
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
General Description
Micropower operation
Operation with North or South Pole
2.5V to 5.5V battery operation
Inverted Output-on without Magnet present
Chopper stabilized
Superior temperature stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
Good RF noise immunity
-40°C to 85°C operating temperature
Low profile 3 pin SC59 (commonly known as SOT23 in
Asia) and DFN2020-3, DFN2020-6 package
ESD (HBM) 5KV for DFN2020-3 and DFN2020-6
6KV for SC59
SC59, DFN2020-3 and DFN2020-6: Available in
“Green” Molding Compound (No Br, Sb)
Lead Free Finish / RoHS Compliant (Note 1)
AH1801 is a Micropower, Ultra-sensitive Hall Effect Switch, which
is with two Hall effect plates and a output driver, mainly designed
for battery–operation, hand-held equipment (such as Cellular and
Cordless Phone, PDA). The total operation power is down to
24uW in the 3V supply.
Either north or south pole of sufficient strength will turn the output
off. The output will be turned on under no magnetic field.
While the magnetic flux density (B) is larger than operate point
(Bop), the output will be turned off, the output is held until B is
lower than release point (Brp), then turned on.
Applications
Cellular phone
PDA
Cordless phone
Ordering Information
AH1801 - XX G - 7
Package
W : SC59
FJ : DFN2020-3
SN : DFN2020-6
Green
G : Green
Packing
7 : Tape & Reel
Device
AH1801-WG-7
AH1801-FJG-7
AH1801-SNG-7
Package
Code
W
FJ
SN
Packaging
(Note 2)
SC59
DFN2020-3
DFN2020-6
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
3000/Tape & Reel
-7
3000/Tape & Reel
-7
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
2. 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.
AH1801 Rev. 7
1 of 10
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated



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AH1801 pdf
Pin Assignment
AH1801
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
(1) SC59
( Top View )
GND 3.
2. Output
1. Vdd
(2) DFN2020-3
( Top View )
3. GND
(3) DFN2020-6
( Top View )
6. NC 5. GND 4. NC
1. Vdd
3. Output
1. Vdd 2. NC 3. Output
Notes: 3. NC is “No Connection”, which is recommended to be tied to ground.
Pin Descriptions
Pin Name
Vdd
GND
Output
NC
P/I/O
P/I
P/I
O
Description
Power Supply Input
Ground
Output Pin
No Connected
AH1801 Rev. 7
2 of 10
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated



Part Number AH1801
Description ULTRA-SENSITIVE HALL EFFECT SWITCH
Maker Diodes - Diodes
Total Page 10 Pages
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