1. PAGE 1 ® The University of Arizona Engineering Professional Development Holiday Inn Sun Spree Resort Scottsdale, AZ September 11-13, 2000 Arpad Muranyi Signal Integrity Engineering Intel Corporation arpad.muranyi@intel.com Introduction to IBIS models and IBIS model making

2. PAGE 2 ® True differential buffers (LVDS) IBIS doesn’t support them directly but they can be approximated with two different methods R=R_fixture V=Avg(V swing ) R=R_fixture Rise Fall V-t curves IaIa R=R_fixture V=Avg(V swing ) Hi Lo I-V curves R=R_fixture I b = -I a V=Avg(V swing ) Rise Fall V-t curves IaIa I b = -I a Hi Lo I-V curves

3. PAGE 3 ® LVDS SPICE and IBIS model overlay