A3242

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 pos- sible through an Allegro® patented dynamic offset cancellation, which reduces
the residual offset voltage normally caused by device overmolding, temperature  excursions, and thermal stress.

The A3241 and A3242 Hall-effect switches include the following on a single  silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifi  er,  chopper stabilization, Schmitt trigger, and a short circuit protected open-drain  output. Advanced BiCMOS wafer fabrication processing is used to take advantage  of low-voltage requirements, component matching, very low input-offset errors,  and small component geometries.