je01911
Junior Member level 1
Hi all,
I am conducting simple noise simulation like
using parametric simulation I sweeps the gate (VG) and input (VS) voltage and load capacitance(C).
According to theory, the thermal noise depends on load capacitance.
Therefore, the noise power is not related with gate and input voltages.
Because load capacitance is multiplier of 10 (100f, 1p, 10p, 100p, 1nF), the thermal noise should be (4.14*10^x V²/Hz) (x is ..., -9, -10, -11 ... ) in all case.
And I expect of
41.4nV²/Hz at 100fF
4.14nV²/Hz at 1pF
0.414nV²/Hz at 10pF
41.4pV²/Hz at 100pF
4.14pV²/Hz at 1nF
However, the simulation results show like
the unit of noise is V²/Hz
In many cases, the simulated results depart from theory result.
Do you know the reason ? and is It reliable results?
I am conducting simple noise simulation like
using parametric simulation I sweeps the gate (VG) and input (VS) voltage and load capacitance(C).
According to theory, the thermal noise depends on load capacitance.
Therefore, the noise power is not related with gate and input voltages.
Because load capacitance is multiplier of 10 (100f, 1p, 10p, 100p, 1nF), the thermal noise should be (4.14*10^x V²/Hz) (x is ..., -9, -10, -11 ... ) in all case.
And I expect of
41.4nV²/Hz at 100fF
4.14nV²/Hz at 1pF
0.414nV²/Hz at 10pF
41.4pV²/Hz at 100pF
4.14pV²/Hz at 1nF
However, the simulation results show like
the unit of noise is V²/Hz
In many cases, the simulated results depart from theory result.
Do you know the reason ? and is It reliable results?