Increased Protection Two-Wire Hall-Effect Latch

摘要

New from Allegro Microsystems Europe is the A1244 a two-wire Hall-effect latch featuring on-chip transient protection and a Zener clamp to protect against overvoltage conditions on the supply line.The new device, which is programmed at the factory to optimise the magnetic switch point accuracy, uses the same patented high-frequency, 4-phase, chopper-stabilisation technique that is used on the company's complementary family of unipolar switches.