• AD8217 zero-drift core

    Does the AD8217 use a switching technique in its zero-drift core, and if so,
    what is the switching frequency?

     

    The AD8217 Autozeroes at 25 kHz and has a chopping frequency at 125 kHz. 
    Either of these could be considered switching…
  • damage on AD8217

    I am noticing that the output pin on the AD8217 we are using are getting damage (ohm out ground to output pin ~400 ohms or less). There is also signs of the IC getting damage (a visible dot as if it has been zapped). This is happening in low occurrences…

  • 关于AD8217的问题

    上面说的总输出增益为20V/V,  但是按照上面的公式:(R4/R1)*(V1-V2),   比如V1-V2等于1V,那么就等于(1.5M/75R)*1=2000V, 为什么说是20V/V呢   是我没有理解吗

  • AD623,AD8217极限差分电压,

    AD623 的差分电压是150MV还是VS-0.15 到 V+-0.5V  ?

    AD8217  是正负1V

    我最近有个 高压电流采样要做,如果和电源不共地我就用AD623,共地就用AD8217   ,可以吗?

  • Differential Input Protection Required on AD8217 AD8218?

    These current shunt monitors give absolute maximum values of +/- 1V and +/- 5V respectively, for the differential input.  Do these inputs have transient protection, or should some sort of clamp be added externally?    The examples on the datasheet do not…

  • RE: 专家经验分享:宽动态范围的高端电流检测的三种解决方案

    第三个解决方案:利用零漂移AD8217 进行高端电流监控

    ADI 公司最近推出了一款高压电流传感器AD8217,它具有零漂移和500 kHz 带宽,专门用来增强宽温度、输入共模和差分电压范围内的分辨率和精确度。图3a 所示为该器件的简化框图;图3b 显示了一个典型应用。

    图3. (a) 高分辨率、零漂移分流监控器AD8217;(b) 利用AD8217 进行高端电流检测

    为了测量流过小分流电阻的极小电流,AD8217 提供最小值为20 mV 的输出范围(整个温度范围内),优于AD8210…

  • RE: Current measure with AD8210

    Hi, Wolfgang.

    AD8210 cannot operate in a -15V power supply. It can only operate within 4.5V to 5.5V.

    Do you need a current sense amplifier that operates with -15V? or can operate in dual supply (+/-15V) or higher? AD8217, AD8218 and AD8219 can operate…

  • AD8479 as a shunt voltage amplifier in a large DC Motor

    We need to monitor the voltage across a shunt in a large DC motor, the Motor voltage is 0 ~ 550VDC and the shunt voltage = 0 ~ 120mV to represent the 0 ~ 1200 Amps flowing into the armature, the signal from the shunt amplifier output will connect to a…

  • 专家经验分享:宽动态范围的高端电流检测的三种解决方案

    专家经验分享:宽动态范围的高端电流检测的三种解决方案 by ADI_Amy

    在电机控制、电磁阀控制、通信基础设施和电源管理等诸多应 用中,电流检测是精密闭环控制所必需的关键功能。如何设计宽动态范围的高端电流检测电路,这对于大多数工程师来说都具有挑战性,这里分享由ADI技术专家Neil Zhao、Wenshuai Liao 和Henri Sino提供的几个建议电路供大家参考。

    将按照设计复杂度从高到低的顺序介绍三种可选解决方案,它们能针对各种不同的应用提供可行的高精度、高分辨率电流检测。
    1. 使用运算放大器…

  • 问题: ADI最新中文资料(2011年3月)