AH1391
HIGH SENSITIVITY ULTRA-LOW POWER DIGITAL
DUAL OUTPUT UNIPOLAR HALL EFFECT SWITCH
Description
Pin Assignments
The DIODES AH1391 is a miniature micropower magnetic Unipolar
Hall effect switch IC with dual outputs specifically designed for
portable and battery powered consumer equipment to home
appliances and industrial applications. To support battery powered
equipment and low voltage microcontrollers, the AH1391 can operate
over the supply range of 1.6V to 5.5V and uses a sleep function to
give an average supply current of only 1.1μA at 1.85V. The AH1391
has a 6kV ESD rating on the supply and output pins. To minimize PCB
space the AH1391 are packaged in small low profile X2-DFN1410-4
and X2-DFN1010-4 (Type B).
(Top View)
VDD
Output1(N-Pole)
1
4
2
3
A North pole of sufficient strength will turn Output1 on and a South
pole of sufficient strength will turn on Output2. The Output1 is turned
on (pulled low) when the magnetic flux density (B), perpendicular to
the part marking surface, falls below North field operate point BOPN (-
25G typical). The Output1 is held low until B rises above the North
field release point BRPN (-20G typical).Similarly, the Output2 will
operate (pulled low) when B to the part marking surface rises above
South field operate point BOPS (25G typical) and is held low until B
falls below the South field release point BRPS (20G typical).
GND Output2(S-Pole)
X2-DFN1410-4
Features
Bottom View
Two Monolithic Unipolar Hall Switches
Top View
Operation with a North Pole (Output1) to Part Marking Surface
Operation with a South Pole (Output2) to Part Marking Surface
X2-DFN1010-4 (Type B)
PIN1 – VDD, PIN2 – GND,
Supply Voltage of 1.6V to 5.5V
Micropower Operation
PIN3 –Output2(S-Pole), PIN4 –Output1(N-Pole)
Dual Outputs for Independent Pole Detection for Design
Flexibility
Internal Pull up and Pull Down Capability
Chopper Stabilized Design
Applications
Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
Smart cover or dock detect for cellular phones and tablets
Position detect for digital stills, video cameras and handheld
gaming consoles
Doors, lids and tray position detect switches home appliances
and industrial applications
Good RF Noise Immunity
Operating Temperature Range -40C to +85C
Levels, proximities and position switches
Contact-less switches in home appliances and industrial
applications
6kV ESD on Supply and Output Pins
Small Low Profile X2-DFN1410-4 and X2-DFN1010-4 (Type B)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
For automotive applications requiring specific change
control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP
capable, and manufactured in IATF 16949 certified facilities),
please contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ 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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March 2023
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AH1391
Document number: DS44733 Rev. 1 - 2