• AD8622: macro model is for +/-15V supply only, Have you got a macro model for AD8622 for +/-2.5V supply voltage operation?

    Have you got a macro model for AD8622 for +/-2.5V supply voltage operation?
    For Vs=+/-5V it works fine but it doesn’t work with +/-2.5V. 

     

    Our SPICE models are usually created for the higher supply voltage of the op
    amp (mentioned in…
  • PSRR of AD8622

    On pages 3/4 of the data sheet, a minimum PSRR of 125 dB @ 25°C is specified,
    whereas in Figs. 29/32 the PSRR apparently settles to slightly above 100 dB
    below 10 Hz. Could you please explain the reason for this discrepancy?

     

    The specs table…

  • AD8622 spice model output current at zero input

    Hello,

    My test circuit is very simple: non inverter amp, gain 2, 500 ohms resistors .Input is 1uV(for test).I measured Vout ~-1mV .The input bias current was measured to be ~300p, but the output current  was ~1.2uA, so it is the reason to the -1mV output…

  • AD8622使用

    在使用ad8622 构成仪表放大的时候,当输入端悬空什么都不接的时候,输出端是电源电压,因为用这个仪表放大测量脑电信号,当接到人体的时候,因为第一级仪表放大只有10倍,脑电信号5-

    200uv,但是在输出端测的时候,有100mv,好像是有个直流偏置,幅值在100多mv上下变动

  • RE: The AD8622 with ~10uF capacitive load

    This question has been closed by the EZ team and is assumed answered.
  • 关于ad8622的使用问题

    在用ad8622构成三运放仪表放大电路中。如果输入端什么都不给,悬空的时候,输出是电源电压,还有就是,因为用来放大人体脑电信号,接到人头上,脑电放大仪表放大只有10倍,按理说只有mv最大,了,可是,用万用表,测量发现有一百多mv,类似于加了个直流偏置,导致后级放大没法用过高倍数放大脑电,

  • AD8622は片電現で使用しても問題ないでしょうか。

    AD8622は両電源仕様しかデータシートでは記載されていないのですが、

    片電現で使用しても大丈夫でしょうか。

  • Can AD8221BR, AD8622 improve current design?

    We are redesigning a test board due to heating in a few LT1167 (LT1167ACS8) and LT1352 (LT1352CS8) devices. Due to lack of information on the specific devices that heat up, done LT Spice simulation for circuits, and have nearly narrowed down on the problem…

  • AD8622做电压跟随器无法正常工作,新手上路

    AD8622用做最简单的电压跟随器,输入接地时,输出却有12V左右,同时芯片发热非常严重,可以烧水了……买的这一批货里有几片能正常工作,其余全部异常,我确认电源没有接反。

    电压跟随器有什么特别的设计技巧吗?

    最简单的电压跟随器如果输入悬空会导致芯片烧坏吗?是否需要加上一个下拉电阻以保证输入没有信号时的芯片正常?