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    Building an adder with transistors in analog library

    About building an adder If I build a 20-bit adder with transisters in analog library (because I don't have digital library), is it much different from the adder building with digital standard cell? And what should I pay attention to build it? When it is finished, how can I simulate to make sure...
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    Building an adder with transistors in analog library

    About building an adder If I build a 20-bit adder with transisters in analog library (because I don't have digital library), is it much different from the adder building with digital standard cell? And what should I pay attention to build it? When it is finished, how can I simulate it easily...
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    Help about simulation of prescaler!

    How to simualte the maximum working frequency of a prescaler and its power consumption? Thanks!
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    Fref of delta-sigma modulator in PLL

    A 3-order MASH modulator in fractional-N pll, each stage uses a 20-bit accumulator. How fast can it work? And generally what frequency does it work at? Thanks!
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    About wc of fractional-N pll

    How to decide ωc of fractional-N pll if the specs such as settling time and Fref are known? Can I use T_set=-lnε/ωc (ε is the accuracy)?
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    hlp! Prescaler in fractional frequency synthesizer

    The center freq. of VCO is 1.8G, so for fractional pll frequency synthesizer, 8/9 and 16/17 prescaler, which one is better choice? (Fref is 26MHz, when 16/17 prescaler is used ,the Fref is divided by 4).
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    What's the difference between SNR and SQNR?

    What's the difference between them? Thanks!
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    Need help about delta-sigma modulator!

    multi-bit single-loop ΔΣ modulator used in frequency synthesizer. I don't know how to simulate it. Who can show me some simulations about it? Thanks!
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    How to simulate a quantizer in Matlab?

    matlab problem In the figure, if the quantizer output is 16-bit binnary,4 MSBs are out, the left 12 LSBs are feedback. How to simulate the quantizer in matlab? My main problem is I don't know how to deal with binary numbers in matlab.
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    About single loop multibit delta-sigma modulators

    multi bit single loop sigma delta used in fractional-N frequency synthesizer i can't understand the multi-bit quantizer,for a 16-bit modulator,how many bits the feedback is? Is it ture that the MSBs of the last accumulator output is the quantizer output and the feedback is the remaing LSBs?Is...
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    what's the difference between dynamic range and SNR?

    for delta-sigma modulator,what's the difference between dynamic range and SNR?
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    help about delta-sigma frequency synthesizer

    using 3-order single loop multibit delta-sigma modulator,how to design the multibit quantizer? assume the accumulator is 20bit, using 4-bit quantizer.
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    About MASH and single loop multibit delta-sigma modulators

    In ΔΣ fractional-N frequency synthesizer, MASH or single loop multibit Δ-Σ modulators are usesd. The structure of MASH is obvious,which is some accumulators , adders and registers, my question is how to realize it? Using transistors to build it or using verilog to generate it? And how to realize...

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