Description

The A 3211 and A3212 integrated circuits are ultra-sensitive, pole in de pen dent Hall-effect switches with latched digital output. These sensors are es pe cial ly suited for operation in battery-operated, hand-held equip ment such as cellular and cordless tele phones, pagers, and palmtop com put ers. A 2.5 volt to 3.5 volt operation and a unique clocking scheme reduce the average op er at ing power requirements to less than 15 μW with a 2.75 volt supply.

Features and Benefits

? Micropower operation

? Operation with north or south pole

? 2.5 to 3.5 V battery operation

? Chopper stabilized

? Superior temperature stability

? Extremely low switchpoint drift

? Insensitive to physical stress

? High ESD protection

? Sol id-state reliability

? Small size

? Easily manufacturable with magnet pole independence

A3212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A3212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械部件來提供類似的功能，后者提供指示所施加磁場的強度和/或方向的可變輸出。