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ANGSEMI

Datasheet

Magnetic Sensor ICs

Omnipolar Detection High

Performance Hall-Effect Sensor IC

 Ordering Information

Part Number B

(Gauss) B

(Gauss)

Package

Type

Package Qty Temperature Eco Plan

AS1803ODSTRN ±18Gauss ±10Gauss SOT23-3L 7-in reel 3000pcs/reel

-40～85℃

Green

AS1803ODMBN ±18Gauss ±10Gauss SIP-3L 1000pcs/Package

-40～85℃

Rohs

AS1803ODSTRY ±18Gauss ±10Gauss SOT23-3L 7-in reel 3000pcs/reel

-40～125℃

Green

AS1803ODMBY ±18Gauss ±10Gauss SIP-3L 1000pcs/Package

-40～125℃

Rohs

 General Description

Using low power CMOS process, the AS1803OD

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.

AS1803OD is designed to respond to alternating

North and South poles. When the magnetic flux density

(B) is larger than operate point (B

), the output will be

turned on (low), the output is held until the magnetic

flux density (B) is lower than release point (B

), then

turn off (high).

The device is available in SOT23-3L and SIP-3L

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

=±18Gauss, B

=±10Gauss

 Good RF noise immunity

 Open Drain Output

 Small Solution Size

 RoHS & Green Compliant

 SOT23-3L and SIP-3L 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

AS1803OD

AS1803XXX

Package：

ST:SOT23-3L

M: SIP-3L

Packing：

R:Tape&Reel

B: Blank

Temperature Grade:

N: -40°C~85°C

Y: -40°C~125°C