在此电路中输入为100mV,但是在50MHz到100MHz才能进行五倍的增益,超过这个频率就会迅速衰减,我想请问怎样修改电路使带宽尽可能加宽到200MHz以上,增益不要有太大的波动谢谢。
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增益和频率受增益带宽积的影响,但是OPA695的GBW对于5倍增益,200MHz带宽应该是没问题的,我用TINA试下:
Gain = +2 Bandwidth (1400 MHz)
Gain = +8 Bandwidth (450 MHz)