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ANGSEMI Microelectronics Co., Ltd. All rights reserved. 30, May 2022
ANGSEMI Datasheet
Magnetic Sensor ICs
Omnipolar Detection High
Performance Hall-Effect Sensor IC
Ordering Information
Part Number
B
OP
(Gauss)
B
RP
Gauss)
Package Type
Package Qty
Temperature
Eco Plan
AS1803STRN
±18Gauss
±10Gauss
SOT23-3L
7-in reel 3000pcs/reel
-40～85℃
Green
AS1803MBN
±18Gauss
±10Gauss
SIP-3L
1000pcs/Package
-40～85℃
Rohs
AS1803DRN
±18Gauss
±10Gauss
DFN1014-4L
7-in reel 3000pcs/reel
-40～85℃
Green
AS1803STRY
±18Gauss
±10Gauss
SOT23-3L
7-in reel 3000pcs/reel
-40～125℃
Green
AS1803MBY
±18Gauss
±10Gauss
SIP-3L
1000pcs/Package
-40～125℃
Rohs
AS1803DRY
±18Gauss
±10Gauss
DFN1014-4L
7-in reel 3000pcs/reel
-40～125℃
Green
General Description
Using low power CMOS process, the AS1803 is
designed for high performance omnipolar detection
hall-effect application, such as cover switch,
contactless switch, solid state switch and lid close
sensor etc battery operation. The hall IC integrated an
on-chip hall voltage generator for magnetic sensing, a
comparator that amplifiers the hall voltage, a Chopper
amplifier, a Schmitt trigger to provide switching
hysteresis for noise rejection, and a complementary
output.
AS1803 is designed to respond to alternating
North and South poles. When the magnetic flux density
(B) is larger than operate point (B
OP
), the output will be
turned on (low), the output is held until the magnetic
flux density (B) is lower than release point (B
RP
), then
turn off (high).
The device is available in SOT23-3L, SIP-3L and
DFN1014-4L package and is rated over the -40°C to
125°C. The all packages are RoHS and Green
compliant.
Features
Input Voltage Range : 2.2V to 5.0V
Operation Frequency: 20kHZ(min)
Omniplar Operation, easy to use as output
Very high sensitivity hall sensor
Low Power CMOS process technology
Chopper stabilization amplifier stage
Magnetic Sensitivity (typical)
B
OP
=±18Gauss, B
RP
=±10Gauss
Good RF noise immunity
No need pull-up resistor
Small Solution Size
RoHS & Green Compliant
SOT23-3L, SIP-3L and DFN1014-4L Packages
-40℃ to +125 ℃ Temperature Range
Applications
Cover switch in clam-shell cellular phones
Cover switch in Notebook, PC/PAD
Contact-less switch in consumer products
Solid State Switch
Handheld Wireless Handset Awake Switch
Lid close sensor for battery-powered devise
Magnet proximity sensor for reed switch
replacement in low duty cycle applications
DV, DSC, and White Goods
AS1803
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ANGSEMI Microelectronics Co., Ltd. All rights reserved. 30, May 2022
AS1803
Marking & Pin Assignment
SOT23-3L
Pin Name
Pin No.
I/O
Pin Function
SOT23-3L
VDD
1
P
Input Power Supply
GND
3
P
Ground
OUTPUT
2
O
Output Pin
SIP-3L
Pin Name
Pin No.
I/O
Pin Function
SIP-3L
VCC
1
P
Input Power Supply
GND
2
P
Ground
OUTPUT
3
O
Output Pin.
DFN1014-4L
Pin Name
Pin No.
I/O
Pin Function
DFN1014-4L
VDD
1
P
Input Power Supply.
GND
2
P
Ground.
OUT
4
O
Output Pin.
NC
3
-
Not Connected.