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运放电路输出差异问题?

Other Parts Discussed in Thread: OPA4227, LM324, OPA4277, OP07

 该电路是加法器和滤波器,SIGNAL_NS

是输入,输出分两路,一路直接输出(NS_SIGNAL),一路经过低通滤波输出(NS_SIGNAL+)。输入0.5毫伏(12脚)的1.6mHZ信号,发现如果用普通的LM324芯片两路输出都正常,如果把LM324芯片换成OPA4227芯片,经过低通滤波后的波形就不正常了,为什么高精度的OPA4227还没有324工作正常,什么原因?

LM324直接输出(NS_SIGNAL)波形正常

opa4227直接输出(NS_SIGNAL)波形正常

LM324经过低通滤波输出波形正常

换成OPA4227经过低通滤波输出波形不正常