Allegro MicroSystems A1250
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. This method reduces the offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.| Part No. | A1250 |
|---|---|
| Datasheet | A1250 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Hall-Effect Latch / Bipolar Switch |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● AEC-Q100 automotive qualified● Quality managed (QM), ISO 26262:2011 compliant
● High-speed 4-phase chopper stabilization
● Low operating voltage down to 3 V
● High sensitivity
● Stable switch points
● Robust EMC PACKAGES: 3-Pin SOT23W (suffix LH) 3-Pin SIP (suffix UA) Not to scale V+ VCC Regulator
DESCRIPTION
Superior high-temperature performance is made possible through an Allegro dynamic offset cancellation that utilizes chopper stabilization. The A1250 includes the following on a single silicon chip: a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a shortcircuit-protected open-drain output. Advanced BiCMOS wafer fabrication processing takes advantage of low-voltage requirements, component matching, very low input-offset errors, and small component geometries. The A1250 Hall-effect bipolar switch turns on in a south polarity magnetic field of sufficient strength and switches off in a north polarity magnetic field of sufficient strength.
