Noise from a pn diode : Noise from a pn diode

Requires: S-Pisces/Noise
Minimum Versions: Atlas 5.28.1.R

This example shows that the noise generated by a device comes from several sources.

A pn silicon diode is modeled, and a DC-IV sweep is performed to confirm the nature of the diode.

The procedure for calculating the noise is almost the same as in the first example. However, this time we use the keyword noise.v.all on the log command. This tells Atlas to output the individual noise from different sources as well as the total noise.

The final plot shows the total noise is the sum of the noise from three sources: electron diffusion, hole diffusion, and generation-recombination.

The noise from electron diffusion and hole diffusion is always calculated. If any generation-recombination models are defined ( srh, optr, auger ) then GR noise is automatically calculated.

In addition to these noise sources there are two additional sources: electron and hole flicker (1/f) noise. The exact physical origin of flicker noise is not fully known, so Atlas uses the phenomenological Hooge model.

To load and run this example, select the Load button in DeckBuild > Examples. This will copy the input file and any support files to your current working directory. Select the Run button in DeckBuild to execute the example.