**Part Number:**AFE5816

**Other Parts Discussed in Thread:**THS4130

Dear team,

In the datasheet, you have mentioned that "The amplifier noise and matching have a direct impact on the I/Q channel performance and therefore must be selected cautiously. Amplifiers with input-referred voltage noise lower than 2 nV/√Hz can be selected.".I guess that you came out this number from the Vn,ircw. But I still don't know how you came out the number of 2nV/sqrt(hz).

Could you please simpliy demonstrate the calculation about how you get the number of "2nV"?

Best Regards

Zhihong Huang