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ANGSEMI Microelectronics Co., Ltd. All rights reserved. 15, Aug. 2017
ANGSEMI Datasheet
Magnetic Sensor IC
Omnipolar Detection High
Performance Low Power
Hall-Effect Sensor IC
Ordering Information
Part Number
B
OP
(Gauss)
B
RP
Gauss)
Package
Type
Package Qty
Temperature
Eco
Plan
Lead
AS1801AD4RN
±18Gauss
±10Gauss
DFN1216-4L
7-in reel
3000pcs/reel
-40～85℃
Green
Cu
AS1801AWRN
±18Gauss
±10Gauss
SOT553
7-in reel
3000pcs/reel
-40～85℃
Green
Cu
AS1801ATWRN
±18Gauss
±10Gauss
TSOT23-3L
7-in reel
3000pcs/reel
-40～85℃
Green
Cu
AS1801AMBN
±18Gauss
±10Gauss
SIP-3L
1K/Package
-40～85℃
RoHS
Cu
General Description
Using low power CMOS process, the AS1801A 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 AS1801A is
typically less than 2.5uA at 2.8V power supply.
AS1801A 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,
TSOT23-3L and SIP-3L Package and is rated over the
-40°C to 85°C. The all packages are RoHS and Green
compliant.
Features
Input Voltage Range : 2.2V to 5.0V
Micro-power consumption ideal for battery
power applications
Omnipolar 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
DFN1216-4L, SOT553, TSOT23-3L & SIP-3L
Packages
-40℃ to +85 ℃ Temperature Range
Applications
Smart Meter
Cover switch
Contact-less switch
AS1801A
www.angsemi.com Version 1.1
ANGSEMI Microelectronics Co., Ltd. All rights reserved. 15, Aug. 2017
AS1801A
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
SOT553
VDD
4
P
Input Power Supply
GND
2
P
Ground
OUTPUT
5
O
Output Pin
NC
1,3
-
Not Connected
TSOT23-3L
Pin Name
Pin No.
I/O
Pin Function
TSOT23-3L
VDD
1
P
Input Power Supply
GND
3
P
Ground
OUTPUT
2
O
Output Pin