Examples of HFSS Modeling for High Speed IC DesignExamples of HFSS Modeling for High Speed IC Design Weimin Sun, PhD Vitesse Semiconductor HFSS 2003 User Workshop February 21, 2003 Page 1 HFSS Modeling for High Speed IC Outlines I) Interconnect Models RLC Lumped Full-wave (S-parameter based) Full-wave (Hspice G & F elements) II) HFSS Modeling Examples On-Die 40G Transmission Lines DA Stage to Stage Interconnects A FcMLF Package A BGA Package High Speed Channel On-Wafer Probe Calibration Elements A 10G Optical and Electrical Module Page 2 Interconnect Models -- RLC Lumped RLC Model Simple, easy and efficient Mutual coupling handling could be very tedious as pin number grows Not accurate for high speed rate (LC cut-off) Can’t account dispersive loss ( skin-depth loss and loss tangent) S- S+ S+ GND SS+ S+ SSGND Page 3 Interconn……