engrMunna
Advanced Member level 4
Hi,
I have searched alot but I couldn't find INL and DNL measurement related to Sigma-Delta ADCs. In normal ADC u can plot the digital output vs the analog input and calcualte INL and DNL, but in Sigma Delta Converters, even for a static input the digital input is not constant as it keeps changes between different levels so that the avrgae value of the digital output equal the analog input, and not the instantaneous digital value. In this case how to measure INL and DNL when you dont have a constant digital output for a static input???
I have searched alot but I couldn't find INL and DNL measurement related to Sigma-Delta ADCs. In normal ADC u can plot the digital output vs the analog input and calcualte INL and DNL, but in Sigma Delta Converters, even for a static input the digital input is not constant as it keeps changes between different levels so that the avrgae value of the digital output equal the analog input, and not the instantaneous digital value. In this case how to measure INL and DNL when you dont have a constant digital output for a static input???