VF401中文资料两线制 MR 环形磁微距传感器集成电路。扁平 TO-92 样式封装。增强灵敏度，典型值为 ±7 G。数字拉电流输出数据手册Honeywell规格书

描述 Description

VF401 是一款高性能的数字式双线 MR（磁阻）传感器，采用小型扁平式的 TO-92 塑料封装，带有电流输出端口，专为细间距环形磁铁的感测而设计。
独特的 VF401 桥布局（专利号 6297628 ）经过优化，允许目标和传感器之间存在较大气隙，减小传感器信号或精度的损失。
VF401 对跑偏（传感器位置相对于环形磁铁内径或外径的漂移）的灵敏度降低。而且它对倾斜误差（与信号元件和环形磁铁平行位置的偏差）的敏感度也降低，允许误差高达 10°。而典型的环形磁铁传感器仅为 2°至 3°，并且受扭转（电桥槽相对于磁极转换与理想角度位置的偏差）的影响更小。

特性 Features

·Robust design operating from -40 °C to 150 °C [-40 °F to 302 °F] can withstand short durations up to 175 °C [347 °F], allowing use in potential applications with extreme temperature requirements.
·Not damaged by reverse polarity voltages when customer-supplied sense resistor is installed, enhancing protection.
·Patented MR bridge optimized for stable sensing of 20- to 50-pole pair ring magnets with improved insensitivity to run-out, tilt and twist.
·2-wire digital current output simplifies wiring and interfacing which can reduce total system cost.
·Enhanced sensitivity, ±7 Gauss typical, allows for larger air gaps (up to 2,5 mm [0.098 in]) and higher pole density (up to 50-pole pairs depending on ring diameter).
·One pulse per pole pair output and differential bridge operation allow compatibility with differential Hall sensors which can make it easier to upgrade existing applications.
·Wide speed capability provides application flexibility with true zero speed sensing and operation up to 3000 Hz.
·Output pattern independent of gap between target and sensor.
·RoHS-compliant materials meet Directive 2002/95/EC.

应用 Application

Transportation
· Speed encoding using a multipole ring magnet
· Enhanced accuracy rotational position sensing
· Wheel speed sensing
· Window lift applications
· Speed and direction sensingIndustrial
· Shaft speed encoding using a multipole ring magnet
· Enhanced accuracy rotational position sensing
· Precision motor speed measurement
· Speed control in machine tools
· Elevator speed sensing
· Speed control in motorized industrial equipment Medical
· Shaft speed encoding using a multipole ring magnet