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大家有把vca810的增做到40db的吗?按照ti数据手册我用50欧姆进行阻抗匹配,结果10k以下根本就不出波形,把电阻去掉还能好点,这是因为我是在面包板上调试的原因吗?求大家帮助啊,不胜感激涕零啊。