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hi
i want to find some matlab programms for calculating the snr&sndr of the sigma-delta modulator
the input signal frequency is 1k
and the osr is 256
can anybody help me to give me the codes?
thank u very much.
hi
i designed a continuous cmfb circuit as was showed in the attachment
but it does now work as i expected
its output is 1.56V at the typical corner
when i changed everything (any or the transistors) of the cmfb circuit
and the ota transistors
the output does not change
also it oscillates when...
Re: how to estimate the terminal capacitance of a MOS tansis
thanks
but when Cgg=Cgd+Cgs+Cgb
how should I consideration the Cgd when the transister works in a common source case
I mean does Miller effect work here?
Cgd=Cgd'*gm*ro?
or Cgd=Cgd'
when Cgd and Cgd' is the capacitance before and...
as the title
in common souce,the Cgd must mutiplite gain?
how about the Cgs and the Cgb
the DC point prints a Cgg
what does this mean?
thanks
best wishes
hi
when i simulated the ota in the picture
sometimes i found the gain was very low
it was about 30dB
even the gain at the output(the second stage) was samller than the first stage
Can anybody tell me why this happenned?
thank you.
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