Description
The A1250 Hall-effect sensor IC is a temperature stable, stress-resistant bipolar switch. This device is the most sensitive Hall-effect device in the Allegro™ bipolar switch family and is intended for ring-magnet sensing. Superior high-temperature performance is made possible through an Allegro patented dynamic offset cancellation that utilizes chopper-stabilization. This method reduces the offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.

Features and Benefits
• High speed, 4-phase chopper stabilization
• Low operating voltage down to 3.0 V
• High Sensitivity
• Stable switchpoints
• Robust EMC