A1145 Datasheet PDF

Allegro MicroSystems A1145

The A1145 and A1146 devices are two-wire, unipolar, Hall effect switches that are factory-programmed at end-of-line to optimize ultrasensitive magnetic switchpoint accuracy. These devices use a high frequency chopper-stabilization technique, produced using the Allegro advanced BiCMOS wafer fabrication process, to achieve magnetic stability and to eliminate offset inherent in single-element devices exposed to harsh application environments. Two-wire unipolar switches, such as the A1145 and A1146, are particularly advantageous in price-sensitive applications because they require one less wire for operation than do switches with the more traditional open-collector output.