How to simulate noise curve with Hspice?

[beargebinjie]

noise curve simulation

now i am designing a opamp with chopper stablization,but i donot know how to simulation the noise curve with the hspice, so i cannot decide the chopper frequency,is anybody can tell me?thanks!

 

[kevinj]

Re: noise curve simulation

from what I've heard, noise is difficult to simulate in spice. I don't think many people can help you because doing noise in old school. I suggest you use spectreRF.

 

[winsonpku]

Re: noise curve simulation

so you mean that we can't do the noise analysis of fully differential amp?
then what is the function of the .noise statement in the hspice?

from what I've heard, noise is difficult to simulate in spice. I don't think many people can help you because doing noise in old school. I suggest you use spectreRF.

 

[Hughes]

noise curve simulation

The .noise statement in hspice is a DC operating-point-base frequency analysis statement. It doesn't suits for switched-capacitor circuits in which a steady-state oppoint doesn't exist.

 

[jcpu]

Re: noise curve simulation

In some Spectre document says it's suitable for scf application,
and some otherwise.

Does someone have experience upon this Spectre scf noise simulation?
Is it really good or not?