[SI-LIST] true differential IBIS problem
- From: <TerenceHsieh@xxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Mon, 1 Aug 2005 14:58:17 +0800
Dear All
I have generated a truly differential IBIS .But there are some problem.
When I generate the IBIS's rising/falling waveform, I use 50 ohm
for R_fix and common mode voltage for V_fix. In the sig-xp, if I use
the IBIS to drive a 50 ohm resistor terminated to common mode voltage,
the
waveform is exactly right .But I must use the IBIS to drive a
transmission
line without termination. When I use the IBIS to drive a pure
transmission
line the output waveform's DC level will change and common mode voltage
of
D+ and D- is different too .How could I generate a truly differential
IBIS
for pure transmission line network without termination?
B.R.
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