thanhtri_pc
Junior Member level 2
hi all,
I want to determine the gain and pharse margin of the Op-amp (open-loop only). So I draw the schematic as attachment.
The input is Vsin signal and I run AC analysis (using Spectre simulaor). After simulating, I realize that with different magnitude of Vsin, I got different values of gain/pharse margin. I would like to ask how to choose the magnitude value of Vsin to get valid gain/pharse margin?
Many helps are welcome!
I want to determine the gain and pharse margin of the Op-amp (open-loop only). So I draw the schematic as attachment.
The input is Vsin signal and I run AC analysis (using Spectre simulaor). After simulating, I realize that with different magnitude of Vsin, I got different values of gain/pharse margin. I would like to ask how to choose the magnitude value of Vsin to get valid gain/pharse margin?
Many helps are welcome!