Diodes AH1810 User Manual
Ah1810 new prod uc t, Description, Features
AH1810
Document number: DS35743 Rev. 2 - 2
1 of 7
August 2013
© Diodes Incorporated
AH1810
NEW PROD
UC
T
HIGH SENSIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Description
The AH1810 is a high sensitivity micropower Omnipolar Hall effect
switch IC with internal pull up and pull down capability. Designed for
portable and battery powered equipment such as cellular phones and
portable PCs, the average supply current is only 6µA at 3V. To
support potable equipment the AH1810 can operate over the supply
range of 2.3V to 3.6V and uses a hibernating clocking system to
minimize the power consumption.
The output is activated with either a North or South pole of sufficient
magnetic field strength. When the magnetic flux density (B)
perpendicular to the package is larger than operate point (Bop), the
output will be turned on (pulled low). The output is turned off when
B becomes lower than the release point (Brp). The output will remain
off when there is no magnetic field.
Features
Omnipolar Operation (North or South Pole)
Supply Voltage of 2.3V to 3.6V
High
Sensitivity
Micropower
Operation
Chopper Stabilized Design Provides:
Superior Temperature Stability
Extremely Low Switch-Point Drift
Enhanced Immunity to Stress
No External Pull up Resistor Required
Good RF Noise Immunity
-40°C to +85°C Operating Temperature
Industry Standard SC59 Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
Applications
Cover or Display Switch in Portable PCs
Open and Close Detect for Cellular Phones
Holster Detect for Cellular Phones and Tablet PCs
Digital Still and Video Cameras
Contact-Less
Switches
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. S more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
(Note 4)
Note:
4. C
IN
is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF to 100nF.