Crosstalk

Definition: Crosstalk is the undesired coupling of signals between adjacent interconnects in an integrated circuit.

Key Points:

  • Causes noise and signal distortion
  • More pronounced in dense layouts and high-speed circuits
  • Can lead to functional failures and timing violations

Types:

  • Capacitive coupling
  • Inductive coupling

Effects:

  • Glitches on quiet lines
  • Delay variation in active lines

Mitigation Techniques:

  • Increasing spacing between wires
  • Shielding critical signals
  • Optimizing wire routing
  • Using differential signaling

Importance:

  • Critical for signal integrity
  • Affects timing and reliability of the circuit
  • Key consideration in layout and routing

Managing crosstalk is crucial for ensuring reliable operation in modern high-density, high-speed VLSI designs.