RC Network Circuit shows a simple RC network with a DC and AC source applied. The circuit consists of two resistors, R1 and R2, capacitor C1, and the source V1. Node 1 is the connection between the source positive terminal and R1. Node 2 is where R1, R2, and C1 are connected. Star-Hspice ground is always node 0.
The Star-Hspice netlist for the RC network circuit is:
A SIMPLE AC RUN
.OPTIONS LIST NODE POST
.AC DEC 10 1K 1MEG
.PRINT AC V(1) V(2) I(R2) I(C1)
V1 1 0 10 AC 1
R1 1 2 1K
R2 2 0 1K
C1 2 0 .001U
Follow the procedure below to perform an AC analysis for the RC network circuit.
1. Type the above netlist into a file named quickAC.sp.
2. Run a Star-Hspice analysis by typing
hspice quickAC.sp > quickAC.lis
When the run finishes Star-Hspice displays
>info: ***** hspice job concluded
followed by a line that shows the amount of real time, user time, and system time needed for the analysis.
The following new files are present in your run directory:
3. Use an editor to view the .
files to examine the simulation results
4. Run AvanWaves and open the .
file. Select the
file from the
Results Browser window to view the waveform. Display the voltage at node 2, using a log scale on the x-axis.
RC Network Node 2 Frequency Response shows the waveform that was produced by sweeping the response of node 2 as the frequency of the input was varied from 1 kHz to 1 MHz.
The file quickAC.lis displays the input netlist, details about the elements and topology, operating point information, and the table of requested data as the input is swept from 1 kHz to 1 MHz. The files quickAC.ic and quickAC.st0 contain information about the DC operating point conditions and the Star-Hspice run status, respectively. The operating point conditions can be used for subsequent simulation runs using the .LOAD statement.Star-Hspice Manual - Release 2001.2 - June 2001