Layout Versus Schematic (LVS) Verification and Post-Layout Simulation
The chapter discusses the essential processes involved in post-layout verification for VLSI design, focusing on parasitic extraction and Layout Versus Schematic (LVS) verification. It examines the impact of parasitic effects on circuit performance metrics like propagation delay and power dissipation, emphasizing the importance of accurate modeling through post-layout simulations. The final steps of the chapter elaborate on how to analyze simulation results, ensuring that circuits meet design specifications and performance expectations.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Parasitic extraction is critical for accurately modeling the performance of VLSI designs.
- LVS verification is a mandatory step to confirm that the physical layout corresponds correctly to the intended schematic.
- Post-layout simulations provide a realistic estimation of circuit behavior, incorporating real-world parasitic effects.
Key Concepts
- -- Parasitic Extraction
- The analytical process of quantifying unwanted resistive and capacitive elements from the physical layout of a circuit.
- -- Layout Versus Schematic (LVS) Verification
- A verification process that checks the correspondence between the extracted netlist from the physical layout and the schematic netlist to ensure design integrity.
- -- PostLayout Simulation
- A simulation utilizing an extracted netlist that includes parasitics to predict the actual performance of a circuit after fabrication.
- -- Propagation Delay
- The time it takes for a signal to propagate through a given component, affected by parasitic capacitances and resistances.
- -- Power Dissipation
- The process by which an electrical component converts electrical energy into heat, affected by both static and dynamic components in VLSI circuits.
Additional Learning Materials
Supplementary resources to enhance your learning experience.