How to simulate output swing of amplifier using H-spice?

[philipwang]

output swing

What configuration should be created to simulate output/input swing of a amp?
It is differential input and differential output folded cascode amp.
Thx!

 

[noiseless]

swing calculation spice

configure it as uni gain feedback, sweep input, plot output vs. input

 

[philipwang]

amp output swing simulation

That is running .DC analyse and sweep vin?
Thx!

 

[staric]

edaboard output swing

It can be runned .Tran analyse with a slow and slope input. It also run .DC analyse and sweep vin.

 

[ezt]

output swing

Hi.
I think, .Tran analysis should be used for output swing calculation. you can use a .measure statement to measure p-p swing. e.g.
.meas tran swing PP v(out) from=0.1ms to=0.2ms
where in this case 0.1ms is the period of input voltage.
But don't forget, you must calculate THD at least by using .four statement. having THD more than 2 or 3% is not very suitable in any application.

Regards,
EZT