vp1953 wrote on Sep 28th, 2010, 5:08pm:In you analysis, can you take out R2 altogether (and not set it to 0)
- and have a non-zero voltage source connected across a noisy resistor with one end of the resistor and voltage source connected to ground.
Try by yourself.
Then show me your results and netlists.I showed noise current RMS value evaluated from transient noise analysis when "R2=0" is replaced by "vdc=0".
I think simply you are wrong in obserbing noise current.
Obserbe "Inoise=Itotal-Idc" not "Itotal".You have to consider difference of magnitude order between Idc and Inoise.
Inoise is very very very very very small comapred to Idc.
Also you have to set "reltol", "vabstol" and "iabstol" appropriately with considering Idc and Inoise magnitudes.