VCA821的负增益能否实现?
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如果您这里的负增益指的是输出和输入相位相反,那么把Vin接在反相输入端就好。
还是说您这里的负增益指的是负的多少dB的增益?想对信号进行衰减?
可以,Vg从0~2V的变化范围,gain是-20dB~20dB的变化范围。jie liu22 说:VCA821能进行信号衰减吗?负增益负的多少dB的增益?