8.5. Challenges of Deep Submicron Scaling

Try these first

1. 1.

   What are Short-Channel Effects?

   Hint

   Think about how channel length affects gate influence.

2. 2.

   What is DIBL?

   Hint

   Focus on the impact of the drain voltage.

3. 3.

   What is a major consequence of Short-Channel Effects?

   • Reduced leakage current
   • Increased leakage current
   • No effect on performance

   Hint

   Think about how scale affects the gate's control.

4. 4.

   Is Drain-Induced Barrier Lowering a phenomenon affecting the threshold voltage?

   • True
   • False

   Hint

   Link the drain voltage to the threshold behavior.

5. 5.

   Consider a MOSFET at 50 nm vs 100 nm. Calculate the expected change in leakage current due to SCE. Discuss the implications of this change.

   Hint

   Use your understanding of how SCE affects current.

6. 6.

   Propose a design change to mitigate DIBL in a given transistor design where DIBL influences are observed. Justify your reasoning.

   Hint

   Think about architecture impacts on voltage threshold.