Operating point
noise example |
Linearised ac circuit
Note, that ac magnitude of the input source has to be one.
Thermal noise of the resistors
r1 and rs given by:
Shot and flicker noise of the diode d1 given by:
All independent sources eliminated (set to zero), noise generators added
Noise analysis creates two plots named noise1 and noise2. The first one
contains the information about noise spectral densities, and the second about total
noises. The vectors in noise1 are:
onoise_r1=
onoise_d1_rs =
onoise_d1_id =
onoise_d1_1overf =
onoise_d1 = onoise_d1_rs + onoise_d1_id + onoise_d1_1overf
onoise_spectrum = onoise_r1 + onoise_d1
inoise_spectrum = onoise_spectrum / |A|2
The vectors in noise2 are:
onoise_total_r1 = |
onoise_total_d1_rs = |
onoise_total_d1_id = |
onoise_total_d1_1overf = |
onoise_total_d1 =onoise_total_d1_rs + onoise_total_d1_id + onoise_total_d1_1overf
onoise_total = onoise_total_r1 + onoise_total_d1
inoise_total_r1 = |
inoise_total_d1_rs = |
inoise_total_d1_id = |
inoise_total_d1_1overf = |
inoise_total_d1 =inoise_total_d1_rs + inoise_total_d1_id + inoise_total_d1_1overf
inoise_total = inoise_total_r1 + inoise_total_d1