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AH1806
Document number: DS36104 Rev. 7 - 2
1 of 12
www.diodes.com
February 2015
© Diodes Incorporated
NEW PR O D U C T
AH1806
HIGH SENSIVITY MICROPOWER
OMNIPOLAR HALL-EFFECT SWITCH
Description
The AH1806 is a high-sensitivity, micro-power Omnipolar Hall effect
switch IC, designed for portable and battery powered consumer to
home appliance and industrial applications such as smart-meter
magnetic tamper detection. Based on two sensitive Hall effect plates
and a copper stabilized architecture the AH1806 provides a reliable
solution over the whole operating range. To support portable and
battery powered equipment, the design has been optimized to operate
over the supply range of 2.5V to 5.5V and consumes only 24µW
with a
supply of 3V.
The single-open-drain output can be
switched on with either a North or
South pole of sufficient field strength. When the magnetic flux density
(B) perpendicular to the package
is larger than operate point (Bop) the
output is switched 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 (North or South Pole) Operation
• High Sensitivity
• Single Open Drain Output
• Micropower Operation
• 2.5V to 5.5V Operating Range
• Chopper Stabilized Design Provides:
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
• Good RF Noise Immunity
• -40°C to +85°C Operating Temperature
• ESD (HBM) > 6KV
• Small Low Profile SOT553 and Industry Standard SC59 and SIP-3
Packages
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View)
SC59
(Top View)
SOT553
SIP-3
Applications
• Doors, Lids, Cover and Tray Position Detect Switches
• Display Switch for Portable PCs and Tablets
• On/Off Switch for PDAs and Digital Cameras
• Liquid Level Detection
• Smart Meters
• Position, Proximity and Level Detection Contact-Less Switch in
Battery Powered Consumer, Home Appliances and Industrial
Applications
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for 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.
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