• RE: Driving analog data convertor AD7823 with an op-amp

    I would look at the AD8031, MAX4124 or MAX4125, LT6233, MAX4488, ADA4851 or the LT6202. They will all comfortable provide x20 amplification at 100kHz with at least a factor of 10 excess loop gain.

    Instead of making all your signals 0V referenced you…

  • ADA4851-4带通滤波电路,自激振荡波形怎么消除?

    ADI网站上的滤波器设计向导,我在里面设计了一个200K的带通滤波电路,参数设置和最后得到的电路图如下,运放没用LT6233,用的是ADA4851-4。

    但是在做好板子以后,输入端用信号源输入了一个200K的正弦波(下图蓝色波形),在电路图中阶段D的输出(U2D输出)测到的波形如图中黄色部分,这是电路被输入的波导致振荡的缘故吧?该怎么消除?还是说这是板子的原因,跟电路图没什么关系?

    在整个电路的最后输出地方(U2A)得到的波形如下图,蓝色的波形是输入,黄色的的波形是输出。

  • RE: Transimpedance Amplifier (Photodiode interface)

    Thanks for getting back, no worries on the latency.

    I have browsed through the last link you left.  It was in the AD op amp handbook.  I learned some good things about guard traces and other practices but again I am a bit stumped on the gain translation…

  • TAGS LIST: Amplifiers

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