上图是OPA189手册中推荐的一个电路,我的问题是图中红色框中是抗混叠电路,那么这个截至频率应该怎么计算,我一开始认为计算公式是:
f=1/{2*pi*(R1+R2)*C2},后来我发现那电容C1,C3怎么办,不参与计算吗?难道公式是f=1/{2*pi*(R1+R2)*(C1+C2+C3}。所以特来论文求证大神
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