Resistance and Capacitance

What are the two most important characteristics of the interconnect today ?

• Sheet resistance

• Inductance

• Capacitance and resistance

• Stacked Via

What are the parameters are fixed in the wire for capacitance calculation

• Height and Thickness of wires

• Space and Dielectric constant

• Length and Width

• Current and Voltage

State the basic formulation for a parallel-plate capacitance

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What are the sources of Capacitance?

• Dielectric capacitance

• pn junction and thin oxide capacitance

• Area,Lateral and Fringing Capacitance

• sidewall and pn junction capacitance

What are the design variables in the wire dimensions for capacitor calculations.

• Dielectric constant

• Width ,Spacing and Length

• Height and Thickness

• Sheet resistance

--- exits between metal 1 and the substrate

• Area capacitances

• Substrate capacitances

• Metal capacitances

• Source capacytances

-- between the conductor sidewalls and the upper conductor and lower substrate

• pn capacitances

• Fringing capacitances

• oxide capacitances

• substrate capacitances

Capacitance controls the ------------ in the signals and determines the --------------

• area and resistance

• delay and power dissipation

• resistance and current

• speed and performance

What are the steps to reduce the capacitance ?

• Reduced space and width

• Resistance and thickness should be less

• Spacing and thickness should be large

• Increased dielectric constant

L=W for

• Reistance

• Sheet resistance

• Capacitance

• Stacked via