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应用于流量表上的霍尔传感器 US4881(M48KUA)双极开关 www.sumzi.com

Update:2010-06-30 Views:7800

工业 : 测量仪器 : 流量表

One popular device that uses a Hall IC is a flow meter (Figure 15). The spoked wheel (paddle wheel), is driven by some type of medium flowing through the pipe. A magnet is attached at the tip of each spoke. In the presence of moving vapor or liquid, the magnets spin at a speed related to the viscosity of the medium flowing through the device. The spinning magnets will switch the Hall IC, producing a square wave output, with a frequency proportional to the flow rate.
Liquid or vapor entering in the direction of the arrow spins the paddle wheel switching the Hall IC “ON” and “OFF”, creating a square wave output. Power Control Many switches must control significant power. A Hall IC can do this only through a relay or Power FET.

US4881 双极霍尔开关 - 低压 & 非常高的灵敏度

迈来芯 US4881 是一款基于CMOS技术的混合信号的双极霍尔效应开关。

器件集成了电压调节器,动态偏差补偿系统的霍尔传感器,施密特触发器和开漏输出驱动于一个封装内。

由于它低的工作电压和扩展的温度范围,使其非常适合于汽车电子,工业和消费电子的低压应用范畴。

表面贴片工艺为小而薄外形的晶体管(SOT23)封装,通孔贴片工艺为塑料单一线(TO-92 扁平)封装。

两个3-L 封装都符合RoHS标准。

特点和优点

  • 宽的工作电压范围 2.2V - 18V
  • 非常高的磁灵敏度
  • CMOS技术
  • 斩波稳定放大器
  • 低功耗
  • 开漏输出
  • 薄SOT23 3L和扁平 TO-92 3L 封装都符合 RoHS 标准
  • SO 封装 北极有效
  • UA 封装 南极有效


 

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