Hi, I am trying to run some spice simulations but running into problems. What I have is three blocks, basically, a driver, the package model for the IC and 30 inches of trace (created using the W transmission line model). When I run the driver by itself it looks like it is supposed to. Driver + package model looks good. Driver + transmission line model looks good, but when I put all three together I run into all kinds of convergence problems. The package models were created using Ansoft Spicelink, the version of hspice that I am using to run these simulations is 2001.2. Has anybody seen similar errors trying to run simulations which are similar to mine. Thanks in advance, Khalid ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu