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我用OPA695做了一个简单的放大器，主要是为了实现200M以内信号的放大。做完之后测试发现，放大器的增益随着输入信号频率的增加反而减小。请高手解惑？？
受增益带宽积的限制，频率增加，增益会减小
输入的信号频率从几百K开始，整个电路的增益就往下减了，跟OPA695的指标差好多呀！！！
先问几个问题啊，放大倍数是多少，电路图是什么样子的，测试工装是什么样子的呢
