Hi, I am new to this board and I am still trying to find my way around.
Here's my question:
For audio processing purposes, I would like to use a programmable gain stage based on the 8:1 multiplexer ADG1408 and get a qualitative feel for the performance by comparing it against a fixed gain stage. When I look at the time domain, I see pretty good correspondence between the two gain stages. However, when I compare the noise performance, I see a 20x higher noise with the programmable gain stage. Is this really to be expected? Why is it so high? I've added the asc file add the bottom of this post..
[edited by: Kepa at 8:48 PM (GMT -5) on 13 Dec 2021]