A1233中文资料Dual-Channel Hall-Effect Direction Detection Sensor IC数据手册Allegro规格书

描述 Description

The A1233 is a dual-channel Hall-effect sensor IC ideal for use in speed and direction sensing applications incorporating encoder ring-magnet targets. The A1233 provides various output signals that indicate speed and direction of target rotation. The Hall elements are both photolithographically aligned to better than 1 μm. Maintaining accurate displacement between the two active Hall elements eliminates the major manufacturing hurdle encountered in fine-pitch detection applications. The A1233 is a highly sensitive, temperature-stable magnetic device ideal for use in harsh automotive and industrial environments.

The Hall elements of the A1233 are spaced 1.63 mm apart, which provides excellent speed and direction information for small-geometry targets. Extremely low-drift amplifiers guarantee symmetry between the switches to maintain signal quadrature. An on-chip regulator allows the use of this device over a wide operating voltage range of 3.5 to 24 V.

End-of-line trimming of the Hall element switchpoints provides tight matching capability. The Allegro® patented, highfrequency chopper-stabilization technique cancels offsets in each channel, providing stable operation over the full specified temperature and voltage ranges.

The A1233 has integrated protection against transients on the supply and output pins and short-circuit protection on all outputs.

The A1233 is available in a 4-pin SIP and a plastic 8-pin SOIC surface mount package. Both packages are lead (Pb) free, with 100% matte tin leadframe plating.

特性 Features

• Precisely aligned dual Hall elements
• Speed and direction outputs
• Output short-circuit protection
• Wide operating temperature range
• Integrated EMC-ESD protection
• Superior temperature stability and industry-leading jitter performance through use of advanced chopper stabilization topology

简介

A1233属于传感器变送器的磁性传感器-开关（固态）。由Allegro制造生产的A1233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。