• RE: Output Impedence of AD8231

    Hi Stephen,

    The output impedance of AD8231 is very low, though I can't say what is the exact value, the recommendation of <50 ohm source impedance will be satisfied by the AD8231.

    In addition to that, you need to consider if the amplifier can…

  • can use AD8231 extra op amp for comparator application.

    can use AD8231 extra op amp for comparator application. Thanks~

  • RE: AD8231 op-amp bandwidth and part number

    Yes I used the op-amp in an AD8231 to implement the high-pass filter.

  • AD8231: CMRR measurements

    I am you sing your AD8231 as a precision current sensing monitor. How can I
    evaluate the CMRR of the AD8231? Is it enough to just measure the Vout at the
    fix Vcm and gain in one point or two? (Equation - AN-539; page2) Is the CMRR
    stabile…
  • RE: spice model for AD8231

    Hello Scow,

    Unfortunately we don't have a spice model available for AD8231. Also, we don't have a SPICE model that is close enough to the AD8231's performance. However, if you would like to simulate a three-opamp instrumentation amplifier behavior, you…

  • AD8231 output offset and voltage drop issue.

    Dear Sir:

                   I used AD8231 in our circuit as below picture (For +VS=5.06V supply, with nCS, A0, A1, A2,-VS to GND) , We have some issue when we test AD8231 as below:

    1. We tried to short +INA and -INA , the outputA have 2.9mV offset , then I check parameter…

  • AD8231: Output signals / not enough gain

    I'm having problems getting the advertised gain on the AD8231.

     

    You need to observe the input voltage range you need, to run AD8231 at a
    specific gain to get wanted output voltage.
    The easiest way to explain this, is with an example…
  • AD8231: What happens if I leave the op amp floating?

    Hi, 

    I am looking to use the AD8231 In Amp in my board design but I will not need to use the on board op amp. What will happen if I leave the op amp inputs and output floating?

  • AD8231程控增益仪表放大器谐波畸变问题

    使用AD8231时发现谐波畸变特别严重,5V单电源供电单倍增益时,使用1V峰峰值31.25Hz信号测试,三次谐波和五次谐波达到将近-50dB,但是128倍增益时谐波畸变又很小只有-80dD。技术文档没有给谐波畸变相关指标,不知道是设计问题还是芯片本身问题,AD8231谐波畸变性能究竟在怎样一个指标呢?