Description

The A1150, A1152, A1153, A1155, A1156, A1157, and A1158 comprise a family of two-wire, unipolar, Hall-effect switches, which are factory-trimmed to optimize magnetic switchpoint accuracy. These devices are produced on the Allegro? advanced BiCMOS wafer fabrication process, which implements a patented 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.

Features and Benefits

? 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

? 3.0 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

A1157屬于傳感器，變送器 > 磁性傳感器 - 開關(guān)（固態(tài)）。Allegro MicroSystems制造生產(chǎn)的A1157磁性傳感器 - 開關(guān)（固態(tài)）該系列產(chǎn)品使用固態(tài)技術(shù)來檢測是否存在超過某個特定幅度和/或標(biāo)示的磁場，并提供指示是否存在此類磁場的雙態(tài)輸出。它們與磁簧開關(guān)以及線性或羅盤型固態(tài)器件不同，前者通過使用移動機(jī)械部件來提供類似的功能，后者提供指示所施加磁場的強(qiáng)度和/或方向的可變輸出。