1. What is CMOS Static Power?

CMOS Static Power is defined as the leakage current due to the very low static power consumption in CMOS devices. It represents the power consumed when the circuit is in a stable state without switching activity.

2. How Does the Calculator Work?

The calculator uses the CMOS Static Power formula:

Where:

• \( P_{st} \) — CMOS Static Power (Watt)
• \( P_t \) — Total Power inside CMOS Circuit (Watt)
• \( P_{dyn} \) — Dynamic Power calculated during rise and fall of input signal (Watt)

Explanation: The static power is obtained by subtracting the dynamic power component from the total power consumption of the CMOS circuit.

3. Importance of Static Power Calculation

Details: Accurate static power calculation is crucial for power optimization in CMOS circuits, especially in low-power applications and battery-operated devices where leakage current significantly impacts overall power consumption.

4. Using the Calculator

Tips: Enter total power and dynamic power values in Watts. Both values must be non-negative numbers. The static power will be calculated as the difference between total power and dynamic power.

5. Frequently Asked Questions (FAQ)

Q1: What causes static power consumption in CMOS circuits?
A: Static power is primarily caused by leakage currents including subthreshold leakage, gate oxide leakage, and reverse-biased junction leakage.

Q2: How does static power compare to dynamic power in modern CMOS technologies?
A: In deep submicron technologies, static power has become increasingly significant and can dominate total power consumption due to increased leakage currents.

Q3: What are typical ways to reduce static power?
A: Techniques include power gating, multi-threshold CMOS, body biasing, and using high-k dielectric materials to reduce leakage currents.

Q4: Why is static power calculation important for IC design?
A: It helps designers optimize power consumption, extend battery life in portable devices, and meet power budget requirements for integrated circuits.

Q5: Can static power be completely eliminated?
A: While it cannot be completely eliminated, it can be significantly reduced through various design techniques and technology improvements.