The Allegro®A1210-A1214 Hall-effect latches are next generation replacements for the popular Allegro 317x and 318x lines of latching switches. The A121x family, produced with BiCMOS technology, consists of devices that feature fast power-on time and low-noise operation. Device programming is performed after packaging, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.

Features and Benefits

■ Continuous-time operation

– Fast power-on time

– Low noise

■ Stable operation over full operating temperature range

■ Reverse battery protection

■ Solid-state reliability

■ Factory-programmed at end-of-line for optimum performance

■ Robust EMC performance

■ High ESD rating

■ Regulator stability without a bypass capacitor

A1212LLHLT-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A1212LLHLT-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。