SS249_1311 Datasheet, PDF (1/7 Pages) SEC Electronics Inc. – CMOS Omnipolar High Sensitivity Micropower Hall Switch

SS249
CMOS Omnipolar High Sensitivity Micropower Hall Switch
Packages
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
Features and Benefits
– Solid-State Reliability much better than reed
Switch
– Omnipolar, output switches with absolute value
of North or South pole from magnet
– Operation from 2.5V to 5.5V
– High sensitivity for direct reed switch
replacement applications
Functional Block Diagram
VDD
Sleep/Awake
Logic
Chopper
Application Examples
– Solid state switch
– Speed detection
–
OUT _–
Interrupter
Magnet proximity sensor for reed switch
replacement
Hall
Plate
GND
General Description:
The SS249 Omnipolar Hall effect sensor IC is fabricated from mixed signal CMOS technology .It incorporates
advanced chopper-stabilization techniques to provide accurate and stable magnetic switch points.
The output transistor of the SS249 will be latched on (BOP) in the presence of a sufficiently strong South or
North magnetic field facing the marked side of the package. The output will be latched off (BRP) in the absence
of a magnetic field.
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V3.10 Nov 1, 2013