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48. Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part B) - B

48. Common Collector and Common Drain Amplifiers (Contd.): Numerical Examples (Part B) - B

This chapter delves into the design guidelines for common collector and common drain circuits while focusing on numerical analysis for these configurations. The output impedance, transconductance, and collector current calculations are emphasized as critical components of the design process. Moreover, the chapter outlines systematic approaches to circuit design through practical examples, laying a foundation for understanding additional configurations like common gate and common base.

Sections

Design Guidelines for Circuit Analysis

This section provides design guidelines for circuit analysis focusing on common collector and common drain configurations, elucidating the parameters required for circuit stability and performance.

48.1 Section Overview

Start current section content and materials

48.1.1 Common Collector or Common Drain Circuit Analysis

This section discusses the analysis and design guidelines for common collector (common drain) circuits, highlighting their output impedance and voltage gain characteristics.

48.1.2 Design Sequence from Output Impedance

This section outlines the guidelines for designing circuits based on output impedance, focusing on common collector and common drain circuit configurations.

48.1.3 Calculating Required Values

This section covers the design guidelines for calculating required values in common drain and common collector circuits.

48.1.5 Common Collector Circuit Guidelines

This section outlines the design guidelines for a common collector circuit, focusing on parameters such as output impedance, transconductance, and cutoff frequency.

48.1.4 Summary of Design Guidelines

The section outlines important design guidelines for common collector and common drain circuits, focusing on output impedance, gain, and DC voltage calculations.

Conclusion on Circuit Design

This section discusses the process of circuit design, focusing on the common collector and common drain circuits, including calculations for output impedance and frequency responses.

48.2 Section Overview

Start current section content and materials

48.2.1 Review of Design Process

The section discusses the design guidelines for common collector and common drain circuits, focusing on the importance of output impedance and transconductance in the design process.

48.2.2 Next Steps: Common Base and Common Gate Configuration

This section delves into the design guidelines for Common Drain and Common Collector configurations, specifically discussing the calculations of output impedance, transconductance, and collector currents.

Learning Objectives

  • The sequence for designing circuits involves starting with output resistance and calculating relevant parameters sequentially.

  • Design guidelines for common collector and common drain circuits focus on utilizing given parameters such as voltage gain and load capacitance.

  • Understanding the relationship between resistance, transconductance, and collector current is essential for optimizing circuit performance.

Key Concepts

Common Collector Circuit

A configuration where the collector terminal serves as a common terminal for both input and output, offering high input impedance and low output impedance.

Common Drain Circuit

Also known as a source follower, this configuration functions similarly to the common collector but is primarily used in MOSFET technology.

Transconductance (gm)

A measure of the rate of change of the output current as a function of the input voltage in a transistor, indicating the performance of the circuit.

Output Impedance

The resistance seen by the load when connected to the output of a circuit, critical for determining how the circuit will interact with subsequent stages.

Upper Cutoff Frequency

The frequency above which the gain of the circuit begins to drop, often determined by load capacitance and circuit resistance.

Practice Exercises

Total Questions

2

Estimated Time

4 min

Passing Score

70%

Instructions

  • Read each question carefully
  • You can use hints if you need help
  • Complete all questions before submitting

1 more question available

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