SPICE problem inquiry

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1 total messages Started by Jim Gouge Fri, 03 Jan 1986 20:52

#62

Author: Jim Gouge
Date: Fri, 03 Jan 1986 20:52

21 lines
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Can anyone help me with a SPICE problem?

I am attempting to make SPICE runs with no options set
and the following timing-related command lines:

	vphi1 7 0 pulse(0v 5v 5ns 5ns 5ns 35ns 100ns)
	vphi2 4 0 pulse(0v 5v 55ns 5ns 5ns 35ns 100ns)
	.trans 5ns 600ns

A typical error message I get is:

	*ERROR*:  INTERNAL TIMESTEP TOO SMALL IN TRANSIENT ANALYSIS

	          TIME = 1.05560d-07; DELTA = 4.76837d-18; NUMNIT = 1098

As indicated by the TIME parameter, this is after (in this case) 105ns 
of successful operation.  Runs have been made at levels 1, 2, and 3 
with the same sort results.

Any suggestions?

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