User`s guide

AC Sweep Analysis 2
-21
4
In the Replace Part dialog box, type
VAC.
5
Select (
✓) the Keep Attribute Values check box.
6
Click OK. The input voltage source changes to an AC
voltage source.
7
Double-click the displayed (AC) value of the new Vin.
8
In the Set Attribute Value dialog box, set the value to
1V.
To set up the AC sweep and start simulation
1
From the Analysis menu, select Setup.
2
In the Analysis Setup dialog box, click AC Sweep.
3
Set up the AC Sweep and Noise Analysis dialog box as
shown in Figure 2-18.
Note
PSpice A/D is not case sensitive, so both M and m
can be used as “milli,” and MEG, Me
g
, and me
g
can all be used for “me
g
a.” However, Probe is case
sensitive for M and m, and will read them as me
g
a
and milli, respectively.
4
Click OK to close the AC Sweep dialog box.
5
Click Close to exit the Analysis Setup dialog box.
6
From the Markers menu, select Mark Advanced.
7
Double-click Vdb.
8
Place one Vdb marker on the output net, and place another
on the Mid net.
9
From the File menu, select Save As, and then type
clippera.sch as the name of the schematic file you want
to save.
10
From the Analysis menu, select Simulate to start the
simulation.
Because the transient analysis was still enabled, PSpice A/
D performs both the transient and AC analyses. The Probe
window and the Analysis Type dialog box appear.
11
In the Analysis Type dialog box, click AC.
The new Vin still has a DC
attribute that you can use to
include a bias with the AC
source. Double-click the AC
source to see the DC attribute
value.
Fi
g
ure 2-18
AC Sweep and
Noise Analysis Dialo
g
Box
or press !
If Probe is not set to run
automatically after simulation,
from the Analysis menu, select
Run Probe.