hspice alter site:edaboard.com
To pit1000:
"Try to put .probe statement before the last .alter statement. "
I have tried what you said,but it still have the problem.Nothing changed.
Seem that the dc analysis implements twice.
Is the ".connect p n" statement affect the simulation results?
the output *.lis file is as follows:
.alter
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** circuit name directory
******
circuit number to circuit name directory
number circuitname definition multiplier
0 main circuit
1 x1. damp 1.00
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** mos model parameters tnom= 25.000 temp= 25.000
******
***************************************************************************
*** model parameters model name: 0:nmos model type:nmos ***
***************************************************************************
*** general parameters ***
deriv= 0.
....................................................
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
****** alter processing listing tnom= 25.000 temp= 25.000
******
.connect p n
vdc p 0 2.5v
.dc vdc 0 5 1m
.alter
$ alter processing continues $
**warning** model nmos
device geometries will not be checked against the limits set by
lmin, lmax, wmin and wmax. To enable this check, add a period(.)
to the model name(i.e. enable model selector).
**warning** model pmos
device geometries will not be checked against the limits set by
lmin, lmax, wmin and wmax. To enable this check, add a period(.)
to the model name(i.e. enable model selector).
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** circuit name directory
******
circuit number to circuit name directory
number circuitname definition multiplier
0 main circuit
1 x1. damp 1.00
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** mos model parameters tnom= 25.000 temp= 25.000
******
***************************************************************************
*** model parameters model name: 0:nmos model type:nmos ***
***************************************************************************
*** general parameters ***
deriv= 0.
*** level 49 model parameters ***
.............................................
Opening plot unit= 79
file=e:\hspice\differential_one.pa1
Opening plot unit= 79
file=e:\hspice\differential_one.sw0
***** job concluded
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** job statistics summary tnom= 25.000 temp= 25.000
******
total memory used 250 kbytes
# nodes = 7 # elements= 8
# diodes= 0 # bjts = 0 # jfets = 0 # mosfets = 5 # va device = 0
analysis time # points tot. iter conv.iter
op point 0.00 1 0
dc sweep 0.89 5001 10033
readin 0.06
errchk 0.03
setup 0.03
output 0.00
total cpu time 1.08 seconds
job started at 18:51:42 10/25/2006
job ended at 18:51:44 10/25/2006
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
****** alter processing listing tnom= 25.000 temp= 25.000
******
vsin p n dc=1 sin(0 10mv 1k 0 0 0)
vdc n 0 2.5v
.tran 1u 2m
**warning** the above command card is not an acceptable alter card
if it is duplicate in comparison to previous input data.
.dc vsin -5 5 1m
.end
$ end of alter processing $
**warning** both nodes of source 0:vsin
are connected together
Opening plot unit= 79
file=e:\hspice\differential_one.pa2
Opening plot unit= 79
file=e:\hspice\differential_one.sw1
Opening plot unit= 79
file=e:\hspice\differential_one.sw2
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** operating point information tnom= 25.000 temp= 25.000
******
***** operating point status is voltage simulation time is 0.
node =voltage node =voltage node =voltage
+0
ut = 3.6191 0
= 2.5000 0:vb = 1.0000
+0:vdd = 5.0000 1:d1 = 3.6191 1:s1 = 1.5860
Opening plot unit= 79
file=e:\hspice\differential_one.tr0
***** job concluded
1 ****** HSPICE X-2005.09 (20050729) 18:51:42 10/25/2006 pcnt
******
*differential single-ended amplifier test
****** job statistics summary tnom= 25.000 temp= 25.000
******
total memory used 410 kbytes
# nodes = 7 # elements= 8
# diodes= 0 # bjts = 0 # jfets = 0 # mosfets = 5 # va device = 0
analysis time # points tot. iter conv.iter
op point 0.03 1 12
dc sweep 2.50 5001 30045
transient 0.15 2001 806 403 rev= 0
readin 0.03
errchk 0.03
setup 0.03
output 0.00
total cpu time 2.89 seconds
job started at 18:51:42 10/25/2006
job ended at 18:51:47 10/25/2006
Init: hspice initialization file: C:\synopsys\Hspice_X-2005.09\hspice.ini
lic: Release hspice token(s)