A1421LK傳感器變送器的磁性傳感器-開關（固態(tài)）規(guī)格書PDF中文資料

A1421LK屬于傳感器變送器的磁性傳感器-開關（固態(tài)）。由Allegro MicroSystems制造生產(chǎn)的A1421LK磁性傳感器 - 開關（固態(tài)）該系列產(chǎn)品使用固態(tài)技術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。

Description

The A1421, A1422, and A1423 are AC-coupled Hall-effect sensor ICs which include monolithic integrated circuits that switch in response to changing differential magnetic fields created by rotating ring magnets or, when coupled with a magnet, by ferrous targets. This family of devices also includes an integrated capacitor that provides the high accuracy of analog sensing without an external filter capacitor. This reduces cost and components, while improving the reliability of the final sensor solution.

Features and Benefits

? Integrated tracking capacitor

? Used for sensing motion of ring magnet or ferrous targets

? Wide operating temperature range

? Operation with magnetic input signal frequency from 20 Hz to 30 kHz

? EMI/ESD-resistant

? Large effective air gaps

? 4.0 to 26.5 V supply operating range

? Output compatible with CMOS logic families

? Reverse battery protection

? Resistant to mechanical and thermal stress

? Accurate true zero crossing switchpoint (A1421 only)

? High vibration immunity, in running mode (A1423 only)