ATS657中文资料Dynamic, Self-Calibrating, Threshold-Detecting, Differential Speed and Direction Hall-Effect Gear Tooth Sensor IC数据手册Allegro规格书

描述 Description

This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: December 1, 2015.

Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the ATS692LSHTN-RSNPH-T.

The ATS657 includes an optimized Hall-effect sensing integrated circuit (IC) and rare earth pellet to create a user-friendly solution for direction detection and true zero-speed, digital gear tooth sensing in two-wire applications. The small package can be assembled simply and used in conjunction with a wide variety of gear tooth sensing applications.

The IC employs patented algorithms for the special operational requirements of automotive transmission applications. The speed and direction of the target are communicated by this two-wire device through a variable pulse width output protocol. The advanced vibration detection algorithm systematically calibrates the IC on the initial teeth of a true rotation signal and not on vibration, always guaranteeing an accurate signal in running mode. Even the high angular vibration caused by engine cranking is completely rejected by the device.

Patented running mode algorithms also protect against air gap changes whether or not the target is in motion. Advanced signal processing and innovative algorithms make the ATS657 an ideal solution for a wide range of speed and direction sensing needs.

The device package is lead (Pb) free, with 100% matte tin leadframe plating.

特性 Features

• Rotational direction detection
• High start-up and running mode vibration immunity
• Single-chip sensing IC for high reliability
• Internal current regulator for two-wire operation
• Variable pulse width output protocol
• Automatic Gain Control (AGC) and offset adjust circuit
• True zero-speed operation
• Wide operating voltage range
• Undervoltage lockout
• ESD and reverse polarity protection

简介

ATS657属于传感器变送器的磁性传感器-开关（固态）。由制造生产的ATS657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。