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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
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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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