7.4.2. Power Consumption Analysis

Try these first

1. 1.

   What are the two types of power consumption in CMOS circuits?

   Hint

   Think about when power is consumed: Is it during switching or not?

2. 2.

   What does leakage current refer to?

   Hint

   It happens even when the device is not active.

3. 3.

   What is the main characteristic of static power in CMOS circuits?

   • High when the circuit is in active state
   • Minimal when transistors are off
   • Maximized by leakage

   Hint

   Think about the circuit's state when it is not operating.

4. 4.

   Dynamic power consumption is affected by which of the following factors?

   • True
   • False

   Hint

   Recall the factors impacting dynamic power you learned.

5. 5.

   If a CMOS circuit has a supply voltage of 1.8 V and operates at a frequency of 500 kHz with a load capacitance of 20 nF and a switching activity of 0.3, calculate the dynamic power consumption.

   Hint

   Make sure you're using the right units and plugging in the values correctly.

6. 6.

   Describe strategies to significantly reduce both static and dynamic power in modern CMOS designs.

   Hint

   Think about innovations in CMOS technology and design methods.