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)