Testing INL/DNL on PCB using ramp signals

[jeremy_zhu]

add a ramp signal as the source signal.
waht's the relation between the freq of ramp and the freq. of sampling? i means what freq of ramp is suitable for testing the static performance .

and what about the freq of sin wave for testing the dynamic performance, what's the coherent freq?

 

[PaloAlto]

Re: test INL/DNL on pcb

Using a ramp is rather complicated, you can use a sine too. You want a low freq signal with a freq that is not a divider of sampling freq

 

[JoannesPaulus]

test INL/DNL on pcb

If you really want to use a ramp (I do not advise that) you should have at least 10 points per code. A better way of testing INL/DNL is using the sinewave test - recomended by the IEEE. You can find a lot of matlab scripts on the web to plot the curves.