Diodes AH1807 User Manual
Ah1807, Description, Features
AH1807
Document number: DS35524 Rev. 3 - 2
1 of 13
February 2014
© Diodes Incorporated
AH1807
MEDIUM SENSITIVITY MICROPOWER
OMNIPLOAR HALL-EFFECT SWITCH
Description
The AH1807 is a medium sensitivity micropower Omnipolar Hall
Effect switch IC designed for battery powered consumer to home
appliance 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.
Features
•
Omnipolar (North or South pole) Operation
• Medium
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 +125°C Operating Temperature
• High
ESD
•
Small Low Profile SOT553 and Industry Standard SC59 and
SIP-3L 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
(TOP View)
SIP-3L
Applications
• Smart
E-Meters
•
Tamper Protection Switch
•
Door, Lids and Tray Position Switch
•
Proximity and Position Switches
• Level
Detects
•
On/Off Switch Digital Contact-Less Switch in Industrial and
Consumer Products
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.