New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

ADC bit width and sample rate #2

Open

briansune opened this issue Oct 5, 2023 · 0 comments

briansune commented Oct 5, 2023

Hi,

After reviewing a bit the HW schematic, there are couple of questions come to my mind.

NFC usually only require bandwidth of 14kHz so if we filter and demodulate the incoming signal after the narrow band filter. The ADC Nyquist bandwidth should only require less than 100kHz?
As this example is using 3MSPS then this also raise a question that the incoming signal is filtered via CIC / IIR / FIR? As we just need a delta in ASK?

I am not sure these questions are incorrect or hard but I guess this could help other developers.

Bests,
Brian

ENJOY~

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment