• OP777 4 to 20 ma

    Hello every one, i cant resolve this circuit:

    1. i cant get the equation to resolve that.
    2. i dont understand the transistor in the forward loop.

    i need help, any body know how to resolve the circuit.

    Thanks!!

  • RE: Single supply, PDIP Op-Amps

    Thanks Harry, totally makes sense. My school simply has limited resources for surface mount devices, so I'm trying to stick with standard breadboard prototyping if possible.

    I'll definitely check out the adapter. I also stumbled upon the OP777,…

  • RE: AD8138 adding two differtial signals

    Hi, Andy.

    Differential amplifiers, like AD8138, can't be used to add two differential signals. They are called differential amps not only due to their input configuration but also by its output voltage which is the "difference" between the two different…

  • Noise optimizing AD8599 &&

    Good day,

    I have a task to optimize noise in BW 10Hz - 10kHz.

    Voltage gain shall be around 20..50. OA connected directly to source of signal,

    which has impedance 1kOm DC and 50Om AC. OA connected to middle point of R1/R2 divider,

    where R1 connected…

  • AD7192对参考电压驱动的要求

    设计中使用电阻分压并通过OP777缓冲后得到2.5v基准电压. 因该基准同时作为激励源的基准,故对其精度要求不高.  但测试中发现, Vref上出现周期约为600KHz, 幅度超过100mv的的负脉冲,推测为AD7192的采样引起.  换用AD440+0.1uf作为参考电压则其电压几乎无类似脉冲出现.  是否OP727输出阻抗过大?  因系统并无参考电压精度要求, 考虑成本原因, 能否推荐其它合适的运放做缓冲器? 或者更廉价但驱动能力较强的电压参考来驱动ADC?

  • [征文] IN118的基准源用AD的芯片,上面写着D6B,困饶我很久了 AD5312


    这个芯片(AD9833)的名字我猜的,可忽略看,如果是这个芯片,左看右看也不知是干吗呢?

  • ADI芯片辨识、型号查找

    看看截图:

  • TAGS LIST: Amplifiers

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    LTC6412
    HMC6187G
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