7f6grenade
Newbie
Hello,
I want to filter out noise from my power supply for which I am using LT8582, LT3045-1 and LT3094. For my research, I need to individually show the PSRR of each of these LDOs and then also confirm my results by connecting all these LDOs together and then again finding PSRR, the issue is I can do it individually but when I join them the software takes too much time for it to be practical.
The solution I have come up with is find FFT of the output of LT8582 and use that somehow as a function of noise to add it as an independent noise source at the input of the combination of the other two LDOs.
I have two questions now:
a. Is this approach even correct?
b. How do I find the function from the FFT of LT8582 to put it into a behavorial source for the other circuit as an input , I have tried doing Inverse Fourier Transform but the output of the IFT and the FFT of the LT8582 output still do not match.
I want to filter out noise from my power supply for which I am using LT8582, LT3045-1 and LT3094. For my research, I need to individually show the PSRR of each of these LDOs and then also confirm my results by connecting all these LDOs together and then again finding PSRR, the issue is I can do it individually but when I join them the software takes too much time for it to be practical.
The solution I have come up with is find FFT of the output of LT8582 and use that somehow as a function of noise to add it as an independent noise source at the input of the combination of the other two LDOs.
I have two questions now:
a. Is this approach even correct?
b. How do I find the function from the FFT of LT8582 to put it into a behavorial source for the other circuit as an input , I have tried doing Inverse Fourier Transform but the output of the IFT and the FFT of the LT8582 output still do not match.