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AH1806

HIGH SENSIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH


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AH1806 pdf
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.
Pin Assignments
(Top View)
SC59
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)
(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.
AH1806
Document number: DS36104 Rev. 7 - 2
1 of 12
www.diodes.com
February 2015
© Diodes Incorporated



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AH1806 pdf
Typical Applications Circuit
AH1806
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF to 100nF.
RL is the pull-up resistor; the recommended resistance is 10kto 100k.
Pin Descriptions
Package: SC59 and SIP-3
Pin
Number
1
2
3
Pin
Name
VDD
GND
OUTPUT
Power Supply Input
Ground
Output
Function
Package: SOT553
Pin
Number
1
2
3
4
5
Pin
Name
NC
GND
NC
VDD
OUTPUT
No Connection (Note 5)
Ground
No Connection (Note 5)
Power Supply Input
Output
Function
Note: 5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.
Functional Block Diagram
AH1806
Document number: DS36104 Rev. 7 - 2
2 of 12
www.diodes.com
February 2015
© Diodes Incorporated



Part Number AH1806
Description HIGH SENSIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Maker Diodes - Diodes
Total Page 12 Pages
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