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AH1803

ULTRA-SENSITIVE HALL EFFECT SWITCH


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AH1803 pdf
Features
AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
General Description
Micropower operation
Operation with North or South Pole
2.4 to 5.5V battery operation
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 DFN2020-6 package
ESD (HBM) 4KV for DFN2020-6
SC59 (commonly known as SOT23 in Asia) and
DFN2020-6: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
AH1803 is with two Hall effect plates and a CMOS 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 on. The output will be turned off under no magnetic field.
While the magnetic flux density (B) is larger than operate point
(Bop), the output will be turned on (low), the output is held until
B is lower than release point (Brp), then turned off (High).
Applications
Cellular phone
PDA
Cordless phone
Typical Circuit
2.4~5.5V
C*
AH1803
GND
Output
* C is for power stabilization and to strengthen the noise immunity, the
recommended capacitance is 10nF~100nF.
AH1803 Rev. 9
DS31193
1 of 9
www.diodes.com
OCTOBER 2009
© Diodes Incorporated



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AH1803 pdf
Ordering Information
AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
AH1803 - XX G - 7
Package
W : SC59
SN : DFN2020-6
Green
G : Green
Packing
7 : Tape & Reel
Product
AH1803-WG-7
AH1803-SNG-7
Package
Code
W
SN
Packaging
(Note 2)
SC59
DFN2020-6
7” Tape and Reel
Quantity
Part Number Suffix
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.
Pin Assignments
(1) SC59 (commonly known as SOT23 in Asia)
( Top View )
(2) DFN2020-6
( Top View )
6. NC 5. GND 4. NC
GND 3.
2. Output
1. Vdd
Notes: 3. NC is “No Connection”, which is recommended to be tied to ground.
1. Vdd 2. NC 3. Output
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
AH1803 Rev. 9
DS31193
2 of 9
www.diodes.com
OCTOBER 2009
© Diodes Incorporated



Part Number AH1803
Description ULTRA-SENSITIVE HALL EFFECT SWITCH
Maker Diodes - Diodes
Total Page 9 Pages
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