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OPA4388: 多阶滤波后的信号抬升

Part Number: OPA4388

我们用OPA4388做的多阶多级增益带通滤波器,现滤波已达到预期效果,输出静默电平为0,输出信号是有负半周的。

加一级求和后,导致前级无法正常运行,请帮看看是否有针对多阶多级增益在1000倍左右的,电平平移方案或资料。