purplewolf wrote on Jun 30^th, 2010, 6:18am:

(1) Use "analogLib/iprobe" instead of saving pin current of drain of M1.
As far as my memory is correct, saving pin currrent can't work in HB analysis of Cadence Spectre.
So try to use Shooting-Newton-PSS not HB-PSS.
If you use Shooting-Newton-PSS, you can save pin current.

(2) Don't use Direct Plot. Use Result Browser.

The followings are general notes for you.

- Always describe correct tool's name and vendor's name which you use as tool or simulator.
- Don't do multiple posts which are same content.
- Don't request source code or behavioral model without any efforts.
- There are many simulators which have analyses called as PSS, PAC and Pnoise.
- Describe in detail with using correct terminologies.
- Warnigns are different from Errors.
- ADS is not name of simulator.
- There is no tool which name is Cadence.
- Don't use Direct Plot of Cadence ADE blindly without knowing definition.
- All gains in Direct Plot of Cadence ADE are "right", "true" and "practical" voltage gain.
- Don't mix up Simulation with Post Processing. They are completely different phase.
- MATLAB are different from Simulink.
- Learn measurements using actual instruments. Not "EDA Tool Play

purplewolf wrote on Jul 1^st, 2010, 3:11am:
What do you mean ?

purplewolf wrote on Jul 1^st, 2010, 3:11am:
But your plot for current is not a result using "analogLib/iprobe".

Is your plot result Shooting-Newton-PSS ?

purplewolf wrote on Jul 1^st, 2010, 3:11am:
See the followings.
http://www.designers-guide.org/Forum/YaBB.pl?num=1237656418
http://www.designers-guide.org/Forum/YaBB.pl?num=1236837379/4#4
http://www.designers-guide.org/Forum/YaBB.pl?num=1272508752/1#1

purplewolf wrote on Jul 1^st, 2010, 6:01am:
I don't think time waveform for current from HB-PSS is completely same as Shooting-Newton-PSS or Transient Analysis since your HB order is nine regardless of "oversamplefactor=3".

purplewolf wrote on Jul 1^st, 2010, 3:11am:
What do you mean ?

purplewolf wrote on Jul 1^st, 2010, 6:24am:
No, it can't be exactly same.
It is very difficult to compare time waveforms between PSS and Transient analyses since its initial phases are different between them.
If you compare them with completely same initial phases, you can observe clear difference between them.
But from practical point of view, you can ignore such small difference.

purplewolf wrote on Jul 1^st, 2010, 6:24am:
You don't have to do such thing, if you save both "Plus" and "Minus" pins of "analogLib/iprobe" or take care of direction of "analogLib/iprobe".