A17201数据手册传感器变送器的磁性传感器-开关（固态）规格书PDF

描述 Description

The A17201 is an AC-coupled Hall-effect sensor IC which includes 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 device also includes an integrated tracking 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.

Magnetic field changes affect the two integrated Hall transducers and then are differentially amplified on the chip. Differential design provides immunity to radial vibration, within the device operating air gap range, by rejection of this common-mode signal change. Steady-state system offsets are eliminated using an on-chip differential bandpass filter with integrated capacitor. This filter also provides relative immunity to interference from electromagnetic sources. The device uses advanced temperature compensation for the high-pass filter, sensitivity, and Schmitt trigger switchpoints to guaranteeoptimal operation to low frequencies over a wide range of air gaps and temperatures.

The device includes: a voltage regulator, two Hall transducers,temperature compensating circuitry, a signal conditioning amplifier, bandpass filter, Schmitt trigger, and an output control. The on-boardregulator permits operation with supply voltages from 3.5 to 24 V. The regulated current output is configured for two-wire interface circuitry and is ideally suited for obtaining speed information in wheel speed applications. The device packages have an operating ambient temperature range of –40°C to 150°C, and are provided in a 3-pin plastic SIP (suffix UA) or a 2-pin plastic SIP (suffix UB). Both packages are lead (Pb) free, with 100% matte-tin-plated leadframes.

特性 Features

• Integrated tracking capacitor
• Integrated capacitor reduces requirements for external
• EMI protection components (UB package)
• Used for sensing motion of ring magnet or ferrous targets
• Wide operating temperature range
• Operation with magnetic input signal frequency from 8 Hz to 20 kHz
• Large effective air gaps
• 3.5 to 24.0 V supply operating range
• Reverse battery protection
• Resistant to mechanical and thermal stress

简介

A17201属于传感器变送器的磁性传感器-开关（固态）。由制造生产的A17201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。