The AH9247 is a high sensitivity Hall-effect switch with internal pull-up
resistor on the output, designed for battery-operation, handheld
A chopper stabilized amplifier improves stability of magnetic switch
points. A sleep-awake logic controls the IC in sleep time or awake
time. This function will reduce the average operating current of the IC.
During the awake time, the output is changed with the magnetic flux
density. During the sleep time, the output is latched in its previous
state and the current consumption will reduce to some µA.
The output can be switched on with either north or south pole of
sufficient strength. If the magnetic flux density perpendicular to the
part marking surface is larger than operating point (BOP), the output
will be turned on; if it is less than releasing point (BRP), the output will
be turned off.
The AH9247 is available in TO92S (TYPE B), SC59 and DFN-2X2-3
packages which are optimized for most applications.
MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
TO92S (TYPE B)
2.5V to 5.5V Power Supply
Switching for Both Poles of a Magnet (Omnipolar)
Superior Temperature Stability
Digital Output Signal
Built-in Pull-up Resistor
ESD (HBM): 6000V
Small Low Profile DFN-2X2-3 and Industry Standard SC59 and
TO92S (TYPE B) Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Magnet Switch in Low Duty Cycle Applications
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
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: DS38119 Rev. 4 - 2
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© Diodes Incorporated