lhlbluesky
Banned

SNDR=signal to noise and distortion ratio
ENOB=(SNDR-1.76)/6.02
in calculation, SNDR=10log(Ps/(Pn+Pd)), Ps is signal power, Pn is noise power, Pd is distortion power, i want to know, what factors effect Pd? in my opinion, Pd is caused by circuit nonlinearity, such as nonlinear on resistance of switch, finite DC gain of opamp, etc.
am i right? if not, please correct me. what is the reason of larger Pd? and how to decrease Pd in circuit design (for good enob)?
please help me, thanks all.
ENOB=(SNDR-1.76)/6.02
in calculation, SNDR=10log(Ps/(Pn+Pd)), Ps is signal power, Pn is noise power, Pd is distortion power, i want to know, what factors effect Pd? in my opinion, Pd is caused by circuit nonlinearity, such as nonlinear on resistance of switch, finite DC gain of opamp, etc.
am i right? if not, please correct me. what is the reason of larger Pd? and how to decrease Pd in circuit design (for good enob)?
please help me, thanks all.