Performance Regions

CK Cheng

CSE Dept.

UCSD

Spectral Content (0,fknee)

• fknee = 0.5/tr Hz

• fedge= 0.35/tr Hz

• tr= T bit width

Attenuation Curves

Performance Region

Lumped-Element Region

• H(w,t)=e-gamma(w)z+jwt

• For lumped-element region

|length gamma(w)|< delta, delta:1/4

RC Line Termination

RC Line Termination

LC Region: Char. Impedance

• Zc=[(jwL+RDC)/jwC]1/2

• =(L/C)1/2(1+RDC/jwL)1/2

• =Z0(1+1/jwT), T= 2L/RDC

LC Region: Char. Impedance

• Zc=(R+sL/sC)1/2=Z0(1+1/sT), T=2L/R

– sL>>R

• Zc(t)=Z0(1+t/T)

– t<<T

LC Line: Characteristic Imp.

LC Line: Characteristic Imp.

LC Line: TDR steps

LC Line: TDR Response

LC Line: TDR Response

LC Line: Propagation Coefficient

LC Line: Resonance

LC Line: H Trajectories

Terminations

LC Line: Step Response

Skin Effect: Characteristic Imp.

Skin Effect: TDR Response

Skin Effect: Propagation Coefficient

Skin Effect: Step Responses vs Termination Styles

Skin Effect:Step Response

Dielectric Loss: Characteristic Imp.

Dielectric Loss:TDR

Dielectric Loss: Propagation Coeffcient

Dielectric Loss: Step Response

Dielectric Loss: Step Response

Response for Belden coaxial cable

Eye Quality for Belden coaxial cable

Length Scaling

Length Scaling

Length Scaling and Skin Effect

Length and Width Scaling

Length Scaling

Distortion vs Length

Dispersion Penalty

Equalization