Can PYNQ-Z2 support an external ADC?

Hi all,

I’m a begginer on FPGAs but I’d like to know if PYNQ-Z2 can have a higher rate ADC connected. I’ve read the internal ADC is a 1 MSPS rate but I would like to use it as a small spectrometer with a wider instant bandwidth. If that is possible, could you please recommend some compatible ADC’s?

Thanks in advance.

Yes, you can use external ADCs, but Pmod, Arduino, RPi are relatively low speed interfaces, so you will be limited by this.
I may be wrong, but I don’t think Pmod ADCs will run much faster than 1Msps depending on the resolution.
It may be technically possible to build some custom boards to make a faster ADC or maybe interleave 2 or more ADCs across all available I/O, but I don’t think you will find off-the-shelf components to do this.


Oh I see. Thank you Cathal!