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Sallen-Key LPF - request for resources

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sallen key switched capacitor

I am designing a two-pole sallen-key low pass filter. I am looking to make it into a switched-capacitor filter. Anybody have any good books or articles that I could take a look at?

Thanks
 

sallen key lpf application

These TI document could help you...I think So..


Bhagath
 

Re: Sallen-Key LPF

That is useful for sallen-key analysis, but it doesn't discuss making it into a switched-capacitor filter. I am interested in finding out how to choose the size of the capacitors and the size of the transistors used for the switches. I tried first using resistors and capacitors like the continuous time filter and then replacing the resistors with switched-caps using the equation:

Req = 1 / (Fclk * C)

That didn't work like I'd hoped. I believe I need to do a z-domain analysis, which is what I am looking for.

Thanks
 

Re: Sallen-Key LPF

I am also unsure how to simulate a switched-capacitor filter in cadence?
 

Re: Sallen-Key LPF

i know it's by using PSS analysis but don't know how to set the things in PSS analysis.

If u have any idea plz let me know...
 

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