19-07-2012, 05:03 PM
Interconnect and PackagingLecture 3: Skin Effect
skineffect.ppt (Size: 812.5 KB / Downloads: 43)
Transmission Line Model
Voltage drops through serial resistance and inductance
Current reduces through shunt capacitance
Resistance increases due to skin effect
Shunt conductance is caused by loss tangent
Interconnect Model
AWG (American Wire Gauge
Wire Diameter = 2.54x10-(AWG+10)/20
Copper p= 2.2uohm-cm
Copper thickness 1oz(/sqft)= 36um
Electric Permittivity of Air 8.85x10-12F/m
Magnetic Permeability of Air
Characteristic Impedance of Air
HW1: Remarks
Board
553x447sqmm, 1 MCM, 64GB memory, 24 STI
7 mils pitch (3.3width/4sep)
24GB/s IO, 1GB/s bus, 240lines/MBA (6GB/s),
10pairs/STI, 9 signals/1 clock
3516nets, 19,788pins (signals + pg), 8pins/sqcm