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Simulators >> Circuit Simulators >> Noise Simulation of Continuous Integrator and SC Amplifier
https://designers-guide.org/forum/YaBB.pl?num=1305268930

Message started by analog_design on May 12^th, 2011, 11:42pm

Title: Noise Simulation of Continuous Integrator and SC Amplifier
Post by analog_design on May 12^th, 2011, 11:42pm

Hi Guys,

I am really facing problem while doing noise simulation of Continuous TIme Integrator. I am using Spectre simulatior
Which is correct method to do noise simulation ?
noise in ADE or
PSS, PAC and Pnoise

Please, explain me detail steps to do noise simulation. I have done analysis with above method. but, I am not confidence whether it is correct or not ?

If you have any doc or suggested book on noise simulation / analysis then please let me know.

Thank You.

Title: Re: Noise Simulation of Continuous Integrator and SC Amplifier
Post by sheldon on May 13^th, 2011, 8:51pm

Analog Design,

It would help if you would explain what your problem is. Is your
problem that you don't know which tool to use? How to use the tools?
The results are not consistent with hand calculation? The results are
not consistent with measurement? ...?

Next, sorry I am a little bit slow. Why would you be using periodic
steady-state analysis to analyze a continuous time integrator? Does
the integrator have reset? Is it used inside a loop, for example, the
controller in a dc-to-dc converter?

Also some comments:
1) ADE is the simulation environment and Spectre is the simulator
2) Spectre performs both linear noise and periodic noise analysis
3) Manages the pre-simulation setup and post-simulation analysis

Best Regards,

Sheldon

Title: Re: Noise Simulation of Continuous Integrator and SC Amplifier
Post by analog_design on May 18^th, 2011, 8:57am

Hi Sheldon,

I am sorry I have passed incomplete information. Please go through an attached block diagram. after resistor there is one MOSFET switch. this is kind of design of integrator. Resistor is fixed. instead of DAC i am using fixed bias for time being.

Please, let me know how can characterize / analysis this design like
Noise simulation, Time domain analysis. Is correct way to do small signal noise simulation in cadence or PSS, PAC and Pnoise simulation.

Please, let me know in detail. I would be thankful to you.

Warm Regards,
Analog_Design

Title: Re: Noise Simulation of Continuous Integrator and SC Amplifier
Post by analog_design on May 18^th, 2011, 8:59am

analog_design wrote on May 18^th, 2011, 8:57am: