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3141 Datasheet(PDF) 4 Page - Allegro MicroSystems |
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3141 Datasheet(HTML) 4 Page - Allegro MicroSystems |
4 / 8 page 3141 THRU 3144 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATION 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 TYPICAL OPERATING CHARACTERISTICS (cont.) CHANGE IN OPERATE POINT 10 15 20 25 SUPPLY VOLTAGE IN VOLTS 0 Dwg. GH-042-1 5 -5.0 0 5.0 10 15 20 T = +25 °C A OPERATION The output of these devices (pin 3) switches low when the magnetic field at the Hall sensor exceeds the operate point threshold (B OP). At this point, the output voltage is V OUT(SAT). When the magnetic field is reduced to below the release point threshold (B RP), the device output goes high. The difference in the magnetic operate and release points is called the hysteresis (B hys) of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. Extensive applications information for Hall-effect sensors is available in: • Hall-Effect IC Applications Guide, Application Note 27701; • Hall-Effect Devices: Soldering, Gluing, Potting, Encapsulating, and Lead Forming, Application Note 27703.1; • Soldering of Through-Hole Hall-Sensor Dervices, Application Note 27703; and • Soldering of Surface-Mount Hall-Sensor Devices, Application Note 27703.2. All are provided in Allegro Electronic Data Book, AMS-702. or at www.allegromicro.com SENSOR LOCATIONS ( ±0.005” [0.13 mm] die placement) 1 3 2 Dwg. MH-011-10A 0.0195" 0.50 mm NOM BRANDED SURFACE ACTIVE AREA DEPTH 0.082" 2.07 mm 0.055" 1.39 mm A Suffix “UA” Suffix “LT” 0.043" 1.09 mm 1 3 2 Dwg. MH-008-2D 0.0305" 0.775 mm NOM ACTIVE AREA DEPTH 0.089" 2.26 mm A Allegro |
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