• performance differences between the AD8422 SOIC and MSOP package options

    Are there any performance differences between the AD8422 SOIC and MSOP package
    options?

     

    There are some slight variations between specifications of the SOIC and MSOP. 
    In general, the choice of a package comes down to size (MSOP is smaller, and…

  • AD8422放大后有干扰

    AD8422ARMZ在对一个微弱信号150uV、300Hz进行放大G=1000的时候,会有一个3kHz的高频干扰,我们在AD8422之前滤波或之后滤波都不能滤除这个信号,请问是AD8422这个放大器自身在放大信号的时候会引入高频的干扰吗?

  • Can I replace AD620 or AD8221 directly with AD8422 in my circuit?

    Can I replace AD620 or AD8221 directly with AD8422 in my circuit?

     

    AD8422 is only available in the High-Performance Pinout which was introduced by
    the AD8221, so a board layout change is required to switch from AD620 to
    AD8422. AD8422 is pin-to…

  • evaluation board and a spice model for the AD8422 to help me accelerate the design and verification process?

    Is there an evaluation board and a spice model for the AD8422 to help me
    accelerate the design and verification process?

     

    Yes.  The AD8422 is compatible with the EVAL-INAMP-82RZ (SOIC version) and the
    EVAL-INAMP-82RMZ (MSOP version):
    http://www…

  • AD8422增益控制

    请问大佬,我预想用ADG804来控制AD8422的增益,搭了以上的电路,在无输入信号时,发现在第一级放大输出端P2测得的电压是-4.8V,第二级放大输出端P4测得的电压为-10V达到饱和。

    然后我将ADG804的VDD、EN和GND引脚断开后,放大电路输出端为0V。

    请问一下这是什么原因造成的?另外想请教一下,有没有除了多路复用器改变电阻之外其他程序控制增益的方法?

  • Regarding AD8422 Single Supply power mode.

    Hi,

    I tried to measure microvolts by changing them to milli volts with the help of AD8422 single supply operation.

    Tried giving 5V , 12 V to the +Vs of the AD8422 and the output remains in 60mV , when the input terminal voltages were 2.93499 Volts and…

  • AD8422与数字电位器AD7376配合使用的输出信号失真

    将AD7376的B端和W端作为放大倍数调节电阻接在AD8422的2、3管脚之间,AD8422是±12V双电源供电,基准REF管脚接地,AD8422的两个输入是峰值为8.5V,频率3.8KHz的两个正弦信号,这两个信号之间幅值差也就100mV左右,现在需要差分放大得到峰值为7.5V的正弦输出信号,先将AD7376调节到抽头数D=9,阻值就是D÷128×10000+120=823.125欧,这个时候波形还是正弦,但如果继续减小抽头数,也就是增大放大倍数,输出信号就会出现如图所示的失真:…

  • AD8422 issue- when isolated the input terminals showing 1.4 V

    Hi ,

    I am having difficulty in implementing a circuit with AD8422

    The actual application for me is to introduce this circuit into a measurement device which have precision in millivolts.
    The change actually occurs in microvolts range. for example,  input…

  • AD8422和AD8429

    在50Hz交流mV信号放大中,相同放大倍数,相同外围电路下,AD8422到3.6mV时输出信号就开始不再正弦,AD8429到6mV后输出信号才发生变形,这是什么差别导致的呢。

  • The instrument amplifier ad8422 cannot be amplified normally

    Hello:

    I want to use ad8422 to realize voltage amplification, but this function has not been realized.
    The experimental phenomenon is that the input is not connected after the chip is powered on, but the measured input pin has a voltage of + 1.1V; after…