Allegro MicroSystems A1244
The A1244 is a two-wire Hall-effect latch. The devices are produced on theAllegro™ advanced BiCMOS wafer fabrication process, which implements a high-frequency, 4-phase, chopper stabilization technique. This technique achieves magnetic stability over the full operating temperature range, and eliminates offsets inherent in devices with a single Hall element that are exposed to harsh application environments.| Part No. | A1244 |
|---|---|
| Datasheet | A1244 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Two Wire Hall-Effect Latch |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● AEC-Q100 automotive qualified● High-speed, 4-phase chopper stabilization ▫ Low switchpoint drift throughout temperature range ▫ Low sensitivity to thermal and mechanical stresses
● On-chip protection ▫ Supply transient protection ▫ Reverse-battery protection
● On-board voltage regulator ▫ 3 to 24 V operation
● Solid-state reliability
● Robust EMC and ESD performance
● Industry-leading ISO 7637-2 performance through use of proprietary, 40 V clamping structures PACKAGES: 3-pin ultra-mini SIP 1.5 mm × 4 mm × 3 mm (suffix UA) 3-pin SOT23-W 2 mm × 3 mm × 1 mm (suffix LH)
DESCRIPTION
The A1244 is a two-wire Hall-effect latch. Two-wire latches are particularly advantageous in cost-sensitive applications because they require one less wire for operation versus the more traditional open-collector output switches. Additionally, the system designer inherently gains diagnostics because there is always output current flowing, which should be in either of two narrow ranges. Any current level not within these ranges indicates a fault condition.
