LMH6518芯片内部前级放大器高增益时发生震荡。在我们使用LMH6518放大器时,芯片(内部)的预放大部分(pre_amp)由10dB切换到30dB时,在无输入信号的情况下,输出出现约400MHz左右的震荡。(下图1时前级放大10dB的底噪,下图2是前级放大30dB的震荡情况)
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