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  3. Switched Cap based System Noise Analysis

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Switched Cap based System Noise Analysis

Abhishek D
Abhishek D over 11 years ago

Hi,

      I am very new to noise analysis when it comes to switched capacitor based system. In my system I have a comparator which goes into unity  feedback mode with some frequency. I have also a capacitor which either connects from input of comparator and ground or input of comparator and input to be compared. Apart from that  I have some set of capacitors which gets connected or  disconnected to input of comparator and ground or input of comparator and some supply. 

 Apart from this, I have a bandgap charge which is being compared with input charge. I also have to look noise coming from there also. 

    I am interested to do noise analysis to this system. I have seen some thread,  but I couldn't understand how should I go about this circuit. I would be very thankful , if someone can help me doing this.

 

Best  Regards

Abhishek 

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  • Andrew Beckett
    Andrew Beckett over 11 years ago

    Abhishek,

    PSS and PNoise are the answer here (most likely). You might want to take a look at Simulating switched-capacitor filters with SpectreRF.

    Regards,

    Andrew.

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  • Andrew Beckett
    Andrew Beckett over 11 years ago

    Abhishek,

    PSS and PNoise are the answer here (most likely). You might want to take a look at Simulating switched-capacitor filters with SpectreRF.

    Regards,

    Andrew.

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