积分器输出波形问题

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Curious, is this the output voltage waveform? Why are your output common-mode voltages inconsistent

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hanyongchunsd 发表于 2021-12-5 19:49
yes,it is the output waveform. I still don't know the reason.

maybe it's incorrect for the CMFB

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hanyongchunsd 发表于 2021-12-7 09:29
I have check it, my CMFB Loopgain PM is 70， Gain is 70 dB and the GBW is about 1/3 of Different , ...

so, what is your CMFB GBW and signal loop GBW and input signal frequency? maybe  CMFB GBW need more bigger than signal loop GBW.