mordak
Member level 5
Hi,
I have a couple of question about distortion and non-linearities in ADCs. I wonder except INL and DNL that cause distortion in ADCS, what can cause a bad THD.
Assume someone wants to model the distortion in an ADC, say third order harmonic. I wonder if the extra term added to the pure signal (cos(ωt)) should be βcos³(ωt) or it should be βcos(3ωt). I just need to add that I know in analog circuits the extra term added due to the distortion would be βcos³(ωt), but I thought in ADCs the fundamental bin should not be affected by distortion, though I am not sure.
Tnx
I have a couple of question about distortion and non-linearities in ADCs. I wonder except INL and DNL that cause distortion in ADCS, what can cause a bad THD.
Assume someone wants to model the distortion in an ADC, say third order harmonic. I wonder if the extra term added to the pure signal (cos(ωt)) should be βcos³(ωt) or it should be βcos(3ωt). I just need to add that I know in analog circuits the extra term added due to the distortion would be βcos³(ωt), but I thought in ADCs the fundamental bin should not be affected by distortion, though I am not sure.
Tnx
