After completing this chapter, you should be able to:
- Convert between ordinary and decibel based power and voltage gains.
- Utilize decibel-based voltage and power measurements during circuit analysis.
- Define and graph a general Bode plot.
- Detail the differences between lead and lag networks, and graph Bode plots for each.
- Combine the effects of several lead and lag networks together in order to determine a system Bode plot.
- Describe the use of digital computers in the area of circuit simulation.
- Analyze differential amplifiers for a variety of AC characteristics, including single ended and differential voltage gains.
- Define common-mode gain and common-mode rejection.
- Describe a current mirror and note typical uses for it.
- 7.3: Bode Plots
- The Bode plot is a graphical response prediction technique that is useful for both circuit design and analysis. It is named after Hendrik Wade Bode, an American engineer known for his work in control systems theory and telecommunications. A Bode plot is, in actuality, a pair of plots: One graphs the gain of a system versus frequency, while the other details the circuit phase versus frequency. Both of these items are very important in the design of well-behaved operational amplifier circuits.