Features and Benefi ts

• Integrated tracking capacitor

• Senses 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 both TTL and 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)

A1421LK-T属于传感器，变送器 > 磁性传感器 - 开关（固态）。Allegro MicroSystems制造生产的A1421LK-T磁性传感器 - 开关（固态）该系列产品使用固态技术来检测是否存在超过某个特定幅度和/或标示的磁场，并提供指示是否存在此类磁场的双态输出。它们与磁簧开关以及线性或罗盘型固态器件不同，前者通过使用移动机械部件来提供类似的功能，后者提供指示所施加磁场的强度和/或方向的可变输出。