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放大器的噪声如何计算?

Other Parts Discussed in Thread: INA163

如图,INA163的噪声和带宽图,如果增益取1000,带宽在100KHz,放大器给整个前端调理电路带来的噪声如何计算?

是应该:噪声=1nV/Hz*100KHz=100uV吗?(对于低频,RTI噪声大于1nV/Hz,所以这个最终噪声值应该大于这个)

表中的输入噪声是在哪种增益下的取值,增益等于1和1000区别很大呀,看样子好像是G=1000,不过文档里没说明。

输出噪声是干嘛用的?如果不按照输入噪声,按照输出噪声算放大器引入的噪声值,60nV/Hz*100KHz=6mV,这个值也太大了吧!?

应该是按照输入和输出噪声哪个算呢?