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Design >> Mixed-Signal Design >> switch capacitor integrator simulation
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Message started by c.h.zheng on Dec 7^th, 2005, 11:37pm

Title: switch capacitor integrator simulation
Post by c.h.zheng on Dec 7^th, 2005, 11:37pm

for everone:
I design a sc integrator on cadence spectre,but i don't know how to simulate it,please give me some advice,thanks very much.

Title: Re: switch capacitor integrator simulation
Post by Cri Azzolini on Dec 8^th, 2005, 8:47am

Hi Zheng,

probably you want to simulate the frequency response of your filter. In this case I suggest you the analysis PSS and PAC which are the steady-state and AC analysis for a periodic circuit (like SC-filters).
The circuit should be fed with a PAC signal (you can use "vsource" or "port" in "analogLib") and the output voltage can be plotted from ADE with Result-> DirectPlot-> MainForm.
If you are not interested to the sidebands of the (sampled) output signal the "maximum sidebands" in PSS analysis and "harmonics" in PSS should be both set at 0 (base-band).

Bye,
Cri

Title: Re: switch capacitor integrator simulation
Post by c.h.zheng on Dec 9^th, 2005, 11:23pm

Hi Cri,thank you!i will try according to your ideas,but if you have some reference about sc simulation,can you share?my email address:wwwzhenghao@163.com,thanks!