4.2.2. Power Supply and Grounding Conflicts

Try these first

1. 1.

   What are the main reasons for needing separate power supplies in mixed-signal systems?

   Hint

   Think about the operational differences between analog and digital circuits.

2. 2.

   Define ground bounce.

   Hint

   Consider what happens to ground voltage during fast switching.

3. 3.

   What is a major consequence of not separating power domains in mixed-signal circuits?

   • Increased speed
   • Improved accuracy
   • Performance degradation

   Hint

   Consider how different circuit types behave.

4. 4.

   True or False: Ground bounce only occurs in digital circuits.

   • True
   • False

   Hint

   Think about how grounds are shared across circuit types.

5. 5.

   Design a mixed-signal circuit layout with specified analog and digital components, explaining how you would address power supply and grounding conflicts.

   Hint

   Imagine how placement affects interference.

6. 6.

   Given a scenario where a system experiences significant ground bounce leading to erroneous readings, propose a set of modifications to resolve the issues.

   Hint

   Focus on the interactions between modules.