difference between SNR and SNDR

Status
Not open for further replies.
V

vishnukanchi

Newbie level 2
Joined
Feb 8, 2006
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,294
Hi,

Can you let me know what is the difference between SNR (Signal to Noise Ratio) and SNDR (Signal to Noise Distortion Ratio). How do you measure these for an op-amp?.

Regards,
Vishnu
 

If the testbench uses a single sinewave source the FFT of the output fives you the wanted and all the rest. If you simulate with spice you will get only the distortion. The noise component could be calculated by the spice AC noise analysis. The output noise should be integrated over the interessting frequency band. This gives the "N".
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…