VLSI Design Lab | Lab Module 4: Layout Design of a CMOS Inverter and Physical Verification by Prakhar Chauhan | Learn Smarter
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Lab Module 4: Layout Design of a CMOS Inverter and Physical Verification

This chapter provides comprehensive insights into the layout design of a CMOS inverter, covering critical aspects such as the importance of design rules, the layout translation from schematic to physical design, and the execution of Design Rule Check (DRC). It emphasizes the role of well contacts and substrate connections in ensuring device stability and reliability.

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Sections

  • 1

    Objective(S)

    This section outlines the objectives for a laboratory module on CMOS inverter layout design and physical verification.

    Learning Practice

  • 2

    Theory And Background

    This section discusses the critical process of layout design in VLSI, emphasizing the importance of transforming abstract circuit schematics into precise geometric representations for fabrication.

    Learning Practice

  • 2.1

    The Essence Of Layout Design

    Layout design defines the geometric patterns of integrated circuits, crucial for successful chip manufacturing.

    Learning Practice

  • 2.2

    The Indispensability Of Layout Design Rules

    Layout design rules are crucial in ensuring the functionality and reliability of manufactured chips, preventing catastrophic failures during fabrication.

    Learning Practice

  • 2.3

    Designing The Cmos Inverter Layout

    This section covers the fundamental aspects of designing the layout for a CMOS inverter, detailing the roles of different layers, the importance of design rules, and critical connections.

    Learning Practice

  • 2.7

    Critical Importance Of Well Contacts And Substrate Connections

    Well contacts and substrate connections are essential for ensuring the stability and reliability of CMOS circuits by preventing latch-up and maintaining proper biasing.

    Learning Practice

  • 2.8

    Design Rule Check (Drc): The Layout's Gatekeeper

    Design Rule Check (DRC) is an automated process essential for verifying that a layout meets defined geometric rules, ensuring manufacturability and electrical reliability.

    Learning Practice

  • 3

    Pre-Lab Questions And Preparation

    This section prepares students for the lab by outlining essential questions and concepts related to the design of a CMOS inverter.

    Learning Practice

  • 4

    Procedure/experimental Steps

    This section outlines the procedure for designing and verifying the layout of a CMOS inverter, emphasizing proper navigation and use of layout tools.

    Learning Practice

  • 4.1

    Task 1: Familiarization With The Layout Editor Interface And Initial Setup

    This section provides an overview of the initial steps for using the layout editor interface, highlighting key tasks like logging in, launching the design environment, and familiarizing oneself with the interface.

    Learning Practice

  • 4.2

    Task 2: Drawing The Full-Custom Mask Layout Of A Cmos Inverter

    This section provides detailed instructions and objectives for creating the full-custom mask layout of a CMOS inverter using a VLSI layout editor.

    Learning Practice

  • 4.3

    Task 3: Performing Design Rule Check (Drc)

    This section focuses on the Design Rule Check (DRC) process, its importance in VLSI design, and the steps to systematically check a layout for compliance with specified geometric rules.

    Learning Practice

  • 5

    Post-Lab Questions And Analysis

    The post-lab questions require students to reflect critically on their CMOS inverter layout experience and understand key design concepts.

    Learning Practice

  • 6

    Deliverables

    This section outlines the objectives, procedures, and deliverables for a laboratory session focused on CMOS inverter layout design and physical verification.

    Learning Practice

References

Untitled document (12).pdf

Class Notes

Memorization

What we have learnt

  • The layout design transform...
  • Design rules are essential ...
  • Effective implementation an...

Final Test

Revision Tests