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Other Parts Discussed in Thread: TL084, OPA2140我们要用TL084做一个多级放大电路，在电压增益为60dB的时候，带宽要求为100Hz到40KHz，在制作这一放大电路时发现当输入信号在毫伏级时噪声太大输入信号被淹没，电路是简单的多级反向比例放大电路，可以怎么改进减弱噪声，麻烦了
