Subject: [IBIS-Users] In V/T curves why does 50 points in .ibs Vs 100 in spice output
From: Angulo, John (john_angulo@mentorg.com)
Date: Wed Jul 23 2003 - 18:01:59 PDT
The following is posted on behalf of Jose Corona at Artisan Components. Please send all private replies to jcorona@artisan.com only.
-----Original Message-----
Hello,
Does anyone know why in the .ibs file generated by s2ibis2 the V/T curves
only report 50 points, whereas in the spice output files there are 100
points?
Here is a sample of the spice output and the .ibs output:
SPICE(typ corner):
Index time v(opad)
--------------------------------------------------------------------------------
0 0.0000000e+00 4.3253099e-01
1 5.0000000e-11 4.3253113e-01
2 1.0000000e-10 4.3252559e-01
3 1.5000000e-10 4.3252751e-01
4 2.0000000e-10 4.3253553e-01
5 2.5000000e-10 4.3253529e-01
6 3.0000000e-10 4.3253389e-01
7 3.5000000e-10 4.3253236e-01
8 4.0000000e-10 4.3253074e-01
9 4.5000000e-10 4.3252927e-01
10 5.0000000e-10 4.3253518e-01
11 5.5000000e-10 4.3256145e-01
12 6.0000000e-10 4.3260427e-01
13 6.5000000e-10 4.3261196e-01
14 7.0000000e-10 4.3256039e-01
15 7.5000000e-10 4.3247953e-01
16 8.0000000e-10 4.3242192e-01
17 8.5000000e-10 4.3246200e-01
18 9.0000000e-10 4.3256133e-01
19 9.5000000e-10 4.3278955e-01
20 1.0000000e-09 4.3323946e-01
IBIS:
[Rising Waveform]
R_fixture = 60.0000
V_fixture = 0.9000
| time V(typ) V(min) V(max)
|
0.000S 0.4325V 0.4109V 0.4434V
1.000e-10S 0.4325V 0.4109V 0.4433V
0.2000nS 0.4325V 0.4109V 0.4434V
0.3000nS 0.4325V 0.4109V 0.4434V
0.4000nS 0.4325V 0.4109V 0.4435V
0.5000nS 0.4325V 0.4109V 0.4433V
0.6000nS 0.4326V 0.4109V 0.4451V
0.7000nS 0.4326V 0.4109V 0.4476V
0.8000nS 0.4324V 0.4109V 0.6000V
0.9000nS 0.4325V 0.4109V 1.3244V
1.0000nS 0.4330V 0.4109V 1.5174V
I'll appreciate any input on this issue,
Thanks,
-Jose
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