Full-power circuit performance refers to bandwidth.

Full-power circuit performance refers to bandwidth.

• A. Gain.
• B. Noise.
• C. Bandwidth.
• D. Input impedance.

Answer: (C)

Full-power circuit performance is about how an amplifier can deliver its rated output power across a range of frequencies. The key term is full-power bandwidth: the frequency range over which the amplifier can supply the specified power into a load without unacceptable distortion or clipping. As frequency rises, the ability to maintain full output power is limited by the device’s dynamics, such as slew rate and internal capacitances, so the full-power bandwidth is usually smaller than the small-signal bandwidth. This is why bandwidth best matches the idea of full-power performance. Gain concerns how much the signal is amplified and can vary with frequency, noise deals with unwanted signals, and input impedance relates to loading—not the maximum power that can be delivered across frequencies.

Full-power circuit performance is about how an amplifier can deliver its rated output power across a range of frequencies. The key term is full-power bandwidth: the frequency range over which the amplifier can supply the specified power into a load without unacceptable distortion or clipping. As frequency rises, the ability to maintain full output power is limited by the device’s dynamics, such as slew rate and internal capacitances, so the full-power bandwidth is usually smaller than the small-signal bandwidth. This is why bandwidth best matches the idea of full-power performance. Gain concerns how much the signal is amplified and can vary with frequency, noise deals with unwanted signals, and input impedance relates to loading—not the maximum power that can be delivered across frequencies.