A convenient element to approximate input-referred noise in an OpAmp Spice model.
Just insert in series with one input, set en (noise floor) & Fn (1/F corner).
See...
InputReferredNoise.zip
on the Device Models & Subcircuits Page of my website. ...Jim Thompson
-- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at