MEDIUM SENSITIVITY MICROPOWER
OMNIPLOAR HALL-EFFECT SWITCH
The AH1807 is a medium sensitivity micropower Omnipolar Hall
Effect switch IC. It is designed for battery powered consumer
products, home appliances, and industrial equipment such as smart
meter magnetic tamper detect. Based on two Hall Effect plates and a
chopper stabilized architecture, the AH1807 provides a reliable
solution over the whole operating range. To support battery and low
power applications, 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 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.
The AH1807 is available in SC59, SOT553 and SIP-3L.
Omnipolar (North or South pole) Operation
Single Open Drain Output
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 +125°C Operating Temperature
Small Low Profile SOT553 and Industry Standard SC59 and
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Tamper Protection Switch
Door, Lids and Tray Position Switch
Proximity and Position Switches
On/Off Switch Digital Contact-Less Switch in Industrial and
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"
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.
Document number: DS35524 Rev. 5 - 2
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