I'm wanting to simulate noise in a TIA. It will use a discrete jfet at the input, then opamps.
Check me out on this, please:
I assume the jfet models have built-in gate equivalent noise voltages and currents, somewhere in the model string.
Also assume the the LTC opamp models include noise params.
Ditto Johnson noise in all resistors.
The LT Spice help pdf file says that...
".NOISE -- Perform a Noise Analysis This is a frequency domain analysis that computes the noise due to Johnson, shot and flicker noise. The output data is noise spectral density per unit square root bandwidth. "
Do resistors have shot noise? What if I want them to? What if I don't?
There doesn't seem to be a noise source as a component. I guess I could use a resistor Johnson noise, and buffer that with a VCVS or VCCS as needed.
Any other advice?