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thanks freebird, i got some insights. My opamp is folded cascoded.
Do you mean when input a large pulse voltage, my current source MOS device is driven into linear region?
Could you tell me how to set the tail current and the cascode current?
Best regards!
hi guys,
when i take my opamp for settling simulation, i got a strange result.The pic is in the attachment. The question is why the settling curve have a turning to become a smaller settling.
Did you have met such problem? What a headache.
Thanks!
sigma delta psd spectre
you can use the 'PSD' function in calculator, set the time you simulated, and the number of samples is your simulated point during the tran time.
Then choose the window type, usually the hanning is good.
Go to the next page, set the window size ,other blank left...
spectre calculator psd
Thank you Aya2002, i mean the function 'PSD' in the Candence Calculator , how to set the function's blank .Dose the 'From' 'to' mean the time interval i have simulate?
spectre psd
Hi,guys,
I'm going to draw the psd of my tran output, but i've got some question about how to setup the 'psd' function.
Dose anyone to show me some refrence about this. Thank you so much.
With my regards!
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