lecture3RFIC Design ELEN 376 Session 3 Instructor: Dr. Allen Sweet April 17, 2002 Copy Right 2002 ELEN 376 1 General Layout Rules All Dimensions are in microns. Cap is in pF or fF, Ind is in nH, Res is in Ohms. Use .5 microns as the finest grid on the CAD Layout Tools. ALL metal lines are TRANSMISSION LINES, and must be modeled as such. Layout should keep all parasitic elements to a minimum value for best performance. Layout should keep chip area to a minimum for lowest cost. Copy Right 2002 ELEN 376 2 GaAs HBT Virtual Foundry Design Rules Layers and Structures Electrical Models Current Limits on Metals Layout Design Rules Design example Copy Right 2002 ELEN 376 3 Cross Section of Metal and Dielectric Layers Copy Right 2002 ELEN 376 4 Layer Definition LAYER NUMBER 6 9 10 1……