• AD8227


    Anyone knows how can I get a graphic for "Input Common-Mode Voltage vs. Output Voltage" for the AD8227 with  12Vdc single supply, Gain >= 10. In datasheet only shows at 5Vdc.

    I appreciate your help. Greetings!

  • AD8227 stability

    Hi there,

    reading through the AD8227 datasheet, in the chapter "Driving an ADC" it is stated that loading the AD8227 output with a RC tau lower than 5us affects the device stability.
    A 5us RC gives a pole at 32kHz. 

    Can I please have more info…

  • AD8227 leadframe

    I have a question about the material of the leadframe of the AD8227.

    The AD8227 and AMR (magnetic sensor) are located on the PCB.
    The material of the leadframe may affect the sensor.
    Iron-based materials seem to affect sensors in particular.
    Please tell me…

  • AD8227 as tenso AC bridge amplifier - overshoot problem

    Dear Analog Devices,

    I have a question about AD8227 as amplifier used in AC-excited tenso bridge. I'm using AC square wave excited full bridge. Exciting signal comes from 3V switching by analog switch (signal is bipolar). Signal which control switching…

  • AD8227 gain variation in NImultisim


    I am trying to model a AD8227 InAmp sensing a differential input from a bridge pressure sensor in NImultisim (see attachments).

    I set the gain resistor for the AD8227 to 487ohms and calculated the gain be 169.3. The REF voltage to the InAmp is about…

  • RE: 签个到,送您好礼啦!(获奖名单已公布)

    天津 空港经济区 测量仪表 关注AD8227

  • RE: 寻找一款输入共模电压可以大于供电电压的仪表放大器

    AD8227的共模电压在正常放大时,是不可以超过供电范围的。但是可以承受一定的过压:In addition to its wide operating range, the AD8227 can handle voltages beyond the rails. For example, with a ±5 V supply, the part is guaranteed to withstand ±35 V at the input with no damage.

  • AD8227 does not work well on LTSpice


    I try to use AD8227 spice model on LTSpice , but it does not work well.

    The condition is below:

    VDD:3.3V, Reference:1.65V, Vcm:1.65V, Bandwidth:100Hz (0.001V)

    When the Rg setting is under 111 ohm, the work does not finished.

    And when the Vcm…

  • AD8227 output voltage limitations @ 0..100mV CM input

    I am considering using your AD8227 instrumentation amplifier to replace an
    existing part. The existing part is unable to drive sufficient output voltage
    at the common mode input voltage I have. I have a common mode input voltage
  • 请问怎么测定AD8227的共模抑制比?

    用到AD8227这款芯片,感觉共模抑制比有点低,请问怎么测定这个参数,我试过:将所有电极连在一起,相对  于大地驱动这些电极。同样,共模抑制的定义是20×log   (VOUT/VIN),其中,VIN为共模驱动信号,VOUT为特定目标  导联得到的信号,这种方法测试的,信号源为信号发生器,通过示波器观测VOUT,结果却是零输出,求指教哪里错了?