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Re: Does input offset voltage of opamp reverses polarity with temprature change?
Let us assume a device with a square law model.
Then the input offset voltage would depend both upon the mobility and threshold voltage.
So yes, there can be reversal.
For closed loop amplifiers, I used to do what is called the three amp structure. But now, I generally break the feedback loop, insert a voltage source and do a Spectre STB analysis. I can check for the phase margin and gain margin directly. Gives me an idea whether my amplifier will be closed...
Your links are not working.
From what I understood is that given a circuit, you want to check whether the output is stable or not or is it exhibiting oscillation?
tstart=<<enter_time_where_you_expect_output_to_be_stable>>
tstop=<<transiet stop time>>
out=VT("<<node_name>>")...
You run EM simulation in fast hot corners.
Electromigration becomes problem at higher temperatures. You can refer to the following link: http://www.csl.mete.metu.edu.tr/Electromigration/emig.htm
As for why fast corners, it is because current is higher in the fast corners.
Take care if you are...
Hi,
Transient simulation and then running a parametric sweep will be very slow. What you can do is run a PSS analysis. See the following pdf.. Slides 22 and 23. **broken link removed**
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