The plots froma custom DAC

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
What you guys think about the numbers?
sorry in order
dynamics,freuency response,cross talk,NOISE FLOOR
 

Attachments

  • dynamics.png
    dynamics.png
    8.1 KB · Views: 155
  • fr.png
    fr.png
    5.7 KB · Views: 148
  • cross.png
    cross.png
    6.6 KB · Views: 152
  • noise.png
    noise.png
    8.2 KB · Views: 152
Can't remember if RMAA normalize everything relative to signal amplitude. I think it does.

The individual noise component amplitude is okay, but look at the summary number for noise level which gives a clearer picture of what happens when those add up. I'm guess roughly 100dB ish which is not remarkable but won't cause any puppies to die either.

The high number of spikes which are harmonics of each other suggest some digital noise or switching power supply.

Crosstalk is on the high side.

No THD graph provided but I can already see some 3rd and 5th harmonics in the DNR chart. So THD I'm guessing is really bad.

Frequency response wobbly suggesting some problem with your filter.
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.