AH1390
ULTRA SENSITIVE DUAL OUTPUT
UNIPOLAR HALL EFFECT SWITCH
Description
The AH1390 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 AH1390 can operate over the supply range of 1.6V
to 3.6V and uses a sleep function to give an average supply current of
only 1.3μA at 1.85V. The AH1390 has a 2kV ESD rating on the supply
and output pins. To minimize PCB space, the AH1390 is packaged in
small low profile X2-DFN1410-4.
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 (-17G
typical). The Output1 is held low until B rises above the North field
release point BRPN (-11G typical). Similarly, the Output2 will operate
(pulled low) when B to the part marking surface rises above South field
operate point BOPS (17G typical) and is held low until B falls below the
South field release point BRPS (11G typical).
Features
Two Monolithic Unipolar Hall Switches
Operation with a North Pole (Output1) to Part Marking Surface
Operation with a South Pole (Output2) to Part Marking Surface
Supply Voltage of 1.6V to 3.6V
Micro Power Operation
Dual Outputs for Independent Pole Detection for Design Flexibility
Internal Pull-Up and Pull-Down Capability
Chopper Stabilized Design
Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
Good RF Noise Immunity
Operating Temperature Range: -40C to +85C
2kV ESD on Supply and Output Pins
Small Low Profile: X2-DFN1410-4
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, PPAP capable, and
manufactured in IATF 16949 certified facilities), please
contact us or your local Diodes representative.
https://www.diodes.com/quality/product-definitions/
Pin Assignments
(Top View)
VDD Output1 (North-Pole)
14
23
GND Output2 (South-Pole)
X2-DFN1410-4
Applications
Smart Cover or Dock Detect for Cellular Phones and Tablet
Position Detect for Digital Still, Video Cameras and Handheld
Gaming Consoles
Door, Lids and Tray Position Detect Switches Home Appliances
and Industrial Applications
Level, Proximity and Position Switches
Contact-Less Switches in Home Appliances and Industrial
Applications
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.
AH1390
Document number: DS42181 Rev. 3 - 2
1 of 9
www.diodes.com
October 2019
© Diodes Incorporated
