Outline
Day One
Fundamentals of Digital and RF Circuits
• RF vs. high speed digital • Signal integrity • Properties of high speed logic gates • Pulse rise/fall times • Propagation time • Spectra of digital signals
Simple but very important physics
• Electric fields, dielectrics, and capacitance • Magnetic fields, mu-materials, and inductance • Electromagnetics and boundaries • Frequency, wavelength, and phase •
Resistance and Ohm's LawTransmission Line Fundamentals
• PCB traces • Velocity of propagation •
Electrical length • Skin effect • Microstrip lines • Striplines • Coaxial •
Coplaner • Line impedance • Transmission energy • Reflected waves • Terminations
Use of Transmission Lines
• Transmission line or wire ? • Line impedance control •
Transmission line systems • Line parasitics
Day Two
PCB Layout Strategies
• Grounding via placement • DC Power distribution • "Ground" return •
Ground bounce •
Plane layersPCB Materials and Fabrication
• Dielectric materials • The basic fab process • Layer Stack-ups • Multi-layer parasitics • Dispersion
Sources of Interference
• Cross talk • PCB inductors • Mutual inductance • Shield traces • Ribbon cables
EMI Issues
• Current loop size • Bypass capacitors • CMOS special considerations • Ground discontinuity • Slew rate control
EMC Issues
• Managing fields • Differential signals
Delay Matching
• Harder than it looks • Serpentine line coupling
Design Rules
• For low noise • For Signal Integrity • For low EMI • Notching ground planes • Danger of autorouting