This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

带有乘法器的信号链,噪声带宽如何确定?

Other Parts Discussed in Thread: TINA-TI

你好,

有一个信号链路,前级运放设置的带宽是100K-110K,增益为10倍,输入信号也在这个带宽内,然后后面经过一个乘法器,将信号频谱搬移到0-10K这个带宽内,后级放大电路的带宽也设置到0-10K,增益设置为10倍,那么假设最前端输入电压噪声密度为10nV/sqrt(Hz),输出电压噪声应为多少呢?