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ANGSEMI Microelectronics Co., Ltd. All rights reserved. Patent Pending 05,Aug. 2021
ANGSEMI
Datasheet
Magnetic Sensor IC
Omnipolar Detection High
Performance Low Power
Hall-Effect Sensor IC
General Description
Using low power CMOS process, the AS1800 is
designed for low power, 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.
The total power consumption of AS1800 is
typically less than 1.8uA at 1.8V power supply. AS1800
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 DFN1216-4L, SOT553,
and TSOT23-3L Package and is rated over the -40°C
to 85°C. The all packages are RoHS and Green
compliant.
Features
Input Voltage Range : 1.65V to 5.5V
Micro-power consumption ideal for battery
power applications
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
=±30Gauss, B
RP
=±20Gauss
Good RF noise immunity
No need pull-up resistor
Small Solution Size
RoHS & Green Compliant
DFN1216-4L, SOT553 & TSOT23-3L
Packages
-40℃ to +85 ℃ 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
AS1800
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ANGSEMI Microelectronics Co., Ltd. All rights reserved. 05, Aug. 2021
AS1800
Ordering Information
Part Number B
OP
(Gauss) B
RP
Gauss)
Package
Type
Package Qty Temperature
Eco
Plan
Lead
AS1800D4RN ±30Gauss ±20Gauss DFN1216-4L 7-in reel 3000pcs/reel
-40～85℃
Green Cu
AS1800WRN ±30Gauss ±20Gauss SOT553 7-in reel 3000pcs/reel
-40～85℃
Green Cu
AS1800TWRN ±30Gauss ±20Gauss TSOT23-3L 7-in reel 3000pcs/reel
-40～85℃
Green Cu
Marking & Pin Assignment
DFN1216-4L
Pin Name
Pin No.
I/O Pin Function
DFN1216-4L
VDD
4
P
Input
Power
Supply
GND
2
P
Ground
NC
3
-
Not
Connected
OUTPUT 1 O Output Pin
SOT553
Pin Name
Pin No.
I/O Pin Function
S
OT553
VDD
4
P
Input
Power
Supply
GND
2
P
Ground
OUTPUT
5
O
Output
Pin
NC 1,3 - Not Connected