Chopper-Stabilized Unipolar Hall-Effect Switches

The A3241 and A3242 integrated circuits are unipolar Hall-effect switches with digital outputs. These sensors are suited for operation over extended temperature ranges, up to +150°C. Superior high-temperature performance is made possible through an Allegro® patented dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.

Features and Benefits
■ Chopper stabilization
    • Superior temperature stability
    • Extremely low switchpoint drift
    • Insensitive to physical stress
■ Reverse battery protection
■ Output short circuit protection
■ Solid state reliability
■ Small size
■ Robust EMC capability
■ High ESD ratings (HBM)