twteng
Junior Member level 1
![Junior Member level 1](/styles/images/ranks/clevel1.gif)
Hi all,
I am designing a 2nd order 1 bit sigma delta modulator, the feedback reference is 0.6V, if set input amplitude to 0.6V(0dB), why the signal power in the spectrum which is not 0dB? Please see attached file.
Please give me a help if you know this issue, Many thanks for your help.
I am designing a 2nd order 1 bit sigma delta modulator, the feedback reference is 0.6V, if set input amplitude to 0.6V(0dB), why the signal power in the spectrum which is not 0dB? Please see attached file.
Please give me a help if you know this issue, Many thanks for your help.