|************************************************************************** [Begin Header] [ICM Ver] 1.1 [File Rev] 2.0 [File Name] sparam_iird9_rail_shorting_2.icm [Date] 05/21/2007 [Source] From SPICE model data. [Notes] The following information is only for demonstration purposes. Changes were made to clarify and simplify the connections. [Disclaimer] Other names and brands may be claimed as the property of others. [Copyright] None [Redistribution] Yes [End Header] | |************************************************************************** | [Begin ICM Family] S_param_examples [Manufacturer] IBIS Open Forum [ICM Family Description] Several S_parameter examples showing vcc rail shorting | |************************************************************************** | [ICM Model List] | Name Mating Min_Slew_Time Image |-------------------------------------------------------------------------- Simple_trace_base_case Mated 666p Simple_trace_shorted_nodes Mated 666p Simple_trace_shorted_ports Mated 666p | | Segment1 | SideA >--------< SideB | |************************************************************************** |Units below assumed to be meters | [Begin ICM Model] Simple_trace_base_case | basic case, 14 ports, each pin plus universal GND is a port ICM_model_type S-parameter [Nodal Path Description] Model_nodemap SideA N_section (vcc1_in vcc2_in vcc3_in signal_in vss1_in vss2_in vss3_in vcc1_out vcc2_out vcc3_out signal_out vss1_out vss2_out vss3_out) Mult=1 Segment1_5GHz_base Model_nodemap SideB [End ICM Model] | | Note that shorting the pins is impossible, because pin numbers are not checked for redundancy | [Begin ICM Model] Simple_trace_shorted_nodes | nodes are shorted, but same pins and ports as base case, so 14 port S-params are useless ICM_model_type S-parameter [Nodal Path Description] Model_nodemap SideA_nodes N_section (vcc_in vcc_in vcc_in signal_in vss_in vss_in vss_in vcc_out vcc_out vcc_out signal_out vss_out vss_out vss_out) Mult=1 Segment1_5GHz_nodes Model_nodemap SideB_nodes [End ICM Model] | [Begin ICM Model] Simple_trace_shorted_ports | nodes are shorted and only 6 ports are used, but 14 pins are present ICM_model_type S-parameter [Nodal Path Description] Model_nodemap SideA_nodes N_section (vcc_in vcc_in vcc_in signal_in vss_in vss_in vss_in vcc_out vcc_out vcc_out signal_out vss_out vss_out vss_out) Mult=1 Segment1_5GHz_ports Model_nodemap SideB_nodes [End ICM Model] | |************************************************************************** | | [ICM Node Map] SideA | pin node name 1 vcc1_in random 2 vcc2_in random 3 vcc3_in random 4 signal_in random 5 vss1_in random 6 vss2_in random 7 vss3_in random [ICM Node Map] SideB | pin node name 1 vcc1_out random 2 vcc2_out random 3 vcc3_out random 4 signal_out random 5 vss1_out random 6 vss2_out random 7 vss3_out random [ICM Node Map] SideA_nodes | pin node name 1 vcc_in random 2 vcc_in random 3 vcc_in random 4 signal_in random 5 vss_in random 6 vss_in random 7 vss_in random [ICM Node Map] SideB_nodes | pin node name 1 vcc_out random 2 vcc_out random 3 vcc_out random 4 signal_out random 5 vss_out random 6 vss_out random 7 vss_out random [End ICM Family] | |************************************************************************** [Begin ICM Section] Segment1_5GHz [Derivation Method] Lumped [ICM S-parameter] File_name sample_5ghz_section1.s14p Port_assignment |Port Node 1 vcc1_in 1 GND 2 vcc1_out 2 GND 3 vcc2_in 3 GND 4 vcc2_out 4 GND 5 vcc3_in 5 GND 6 vcc3_out 6 GND 7 signal_in 7 GND 8 signal_out 8 GND 9 vss1_in 9 GND 10 vss1_out 10 GND 11 vss2_in 11 GND 12 vss2_out 12 GND 13 vss3_in 13 GND 14 vss3_out 14 GND [End ICM Section] [Begin ICM Section] Segment1_5GHz_nodes [Derivation Method] Lumped [ICM S-parameter] File_name sample_5ghz_section1.s14p Port_assignment | | 14 ports, but shorted at the node level | |Port Node 1 vcc_in 1 GND 2 vcc_out 2 GND 3 vcc_in 3 GND 4 vcc_out 4 GND 5 vcc_in 5 GND 6 vcc_out 6 GND 7 signal_in 7 GND 8 signal_out 8 GND 9 vss_in 9 GND 10 vss_out 10 GND 11 vss_in 11 GND 12 vss_out 12 GND 13 vss_in 13 GND 14 vss_out 14 GND [End ICM Section] [Begin ICM Section] Segment1_5GHz_ports [Derivation Method] Lumped [ICM S-parameter] File_name sample_5ghz_section1.s6p Port_assignment |Port Node 1 vcc_in 1 GND 2 vcc_out 2 GND 3 signal_in 3 GND 4 signal_out 4 GND 5 vss_in 5 GND 6 vss_out 6 GND [End ICM Section] |************************************************************************** | [End]