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问下IC2的作用。
对哦·怎么没想到呢,谢谢啊
楼上的解释是正确的。高速电路中应当注意相位延迟。
这是一个典型的howland电流源电路,详细分析请参考下面的应用手册。近期我也会放一篇中文的文档上来。
http://www.ti.com/lit/an/snoa474a/snoa474a.pdf