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Simulators >> Circuit Simulators >> how can I simulate the noise of CDS(Correlated Double Sampling) circuit?
https://designers-guide.org/forum/YaBB.pl?num=1218419719

Message started by daisy on Aug 10^th, 2008, 6:55pm

Title: how can I simulate the noise of CDS(Correlated Double Sampling) circuit?
Post by daisy on Aug 10^th, 2008, 6:55pm

Hi!
I want to see the effect of the CDS circuit in decreasing the noise,so I need to simulate the circuit at two different time point--reset and integrating period.As I know,hspice can give the noise result at some certain time point,so how should I simulate the CDS circuit which works at two different time points?

Thank you!
daisy

Title: Re: how can I simulate the noise of CDS(Correlated Double Sampling) circuit?
Post by Frank Wiedmann on Aug 11^th, 2008, 12:41am

See http://www.designers-guide.org/Analysis/sc-filters.pdf. The PNoise analysis of SpectreRF takes into account all the effects. For example, the OPA333 from Texas Instruments was designed with this technique, see http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=4014593&arnumber=4014603&count=40&index=11 and http://focus.ti.com/lit/an/slyt272/slyt272.pdf. I do not know how to do this analysis in HSPICE and if it is possible at all.

Title: Re: how can I simulate the noise of CDS(Correlated Double Sampling) circuit?
Post by daisy on Aug 11^th, 2008, 1:57am

Thank you!I will go to see.
daisy

Frank Wiedmann wrote on Aug 11^th, 2008, 12:41am: