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A1184LUA Datasheet(PDF) 6 Page - Allegro MicroSystems |
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A1184LUA Datasheet(HTML) 6 Page - Allegro MicroSystems |
6 / 14 page 6 A1184-DS, Rev. 2 Worcester, Massachusetts 01615-0036 (508) 853-5000 115 Northeast Cutoff, Box 15036 www.allegromicro.com Allegro MicroSystems, Inc. Standard Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switch A1184 Functional Description BHYS ICC(H) ICC(L) B+ I+ B– 0 Operation The output, ICC, of the A1184 device switches high after the magnetic field at the Hall sensor exceeds the operate point threshold, BOP. When the magnetic field is reduced to below the release point threshold, BRP, the device output goes low. The dif- ferences between the magnetic operate and release point is called the hysteresis of the device, BHYS. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. (See figure 1). Figure 1. On the horizontal axis, the B+ direction indicates increasing south polarity magnetic field strength, and the B– direction indicates decreasing south polarity field strength (including the case of increasing north polarity). |
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