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手册中推荐使用THS4031，如下图
不知道能不能用OPA340UA来代替呢，这个运放要求高吗，THS4031是电压反馈放大器，OPA340UA是 rail-to-rail 运算放大器，THS4031带宽是100MHz 而 OPA340UA是 5.5MHz。不知道能不能代替
可以啊，OPA340UA也是电压反馈运放。只是THS4031噪声参数更好一点
