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59. Multi-Transistor Amplifiers (Contd.): Numerical Examples (Part B)

59. Multi-Transistor Amplifiers (Contd.): Numerical Examples (Part B)

The chapter focuses on multi-transistor amplifiers, specifically discussing the common source amplifier and its cascading with the common drain stage to improve bandwidth and overall performance. Key numerical examples highlight calculations of voltage gain and upper cutoff frequency, emphasizing the use of transistor configurations to enhance amplifier characteristics. The importance of input resistance in circuit design is also addressed, illustrating how cascading stages can significantly affect performance metrics.

Sections

Analog Electronic Circuits

This section covers the principles and calculations involved in multi-transistor amplifiers like common source and common drain stages.

59.1 Section Overview

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59.1.1 Prof. Pradip Mandal

This section summarizes the workings of Multi-Transistor Amplifiers, focusing on numerical examples of Common Source and Common Drain configurations in analog electronic circuits.

59.1.2 Department of Electronics and Electrical Communication Engineering

This section discusses Multi-Transistor Amplifiers, particularly focusing on common source amplifiers and their cascading with common drain stages to enhance bandwidth and improve performance.

59.1.3 Indian Institute of Technology, Kharagpur

This section details the workings and analysis of multi-transistor amplifiers, focusing on the common source amplifier and its cascading with common drain stages to enhance bandwidth.

59.1.4 Lecture – 59

This section discusses Multi-Transistor Amplifiers with a focus on numerical examples, specifically comparing Common Source and Common Drain stages.

59.1.5 Multi-Transistor Amplifiers (Contd.):

This section discusses multi-transistor amplifiers, specifically focusing on common source amplifiers, and demonstrates numerical examples related to voltage gain and upper cutoff frequency.

59.1.5.1 Numerical Examples (Part B)

This section examines numerical examples of common source and common drain amplifiers, exploring voltage gain and frequency responses.

Common Source Amplifier

The Common Source Amplifier (CS) configuration is an essential building block in analog electronic circuits, offering significant amplification capabilities.

59.2 Section Overview

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59.2.1 Voltage Gain

This section discusses voltage gain in multi-transistor amplifiers, particularly focusing on common source amplifiers.

59.2.2 Output Resistance

This section discusses output resistance in multi-transistor amplifiers, focusing on key parameters and calculations involved.

59.2.3 Upper Cut Off Frequency

This section explores the concept of upper cut off frequency in analog electronic circuits, focusing primarily on its application in common source amplifiers and subsequent stages.

59.2.4 Cascading CS Stage with Common Drain Stage

This section discusses the cascading of a common source (CS) amplifier with a common drain (CD) stage, focusing on their combined effects on voltage gain and bandwidth.

Common Drain Stage Example

This section covers the analysis of a common drain stage as applied in MOS amplifiers, detailing numerical examples and their significance in enhancing bandwidth.

59.3 Section Overview

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59.3.1 Current and Voltage Calculations

This section discusses current and voltage calculations in common source amplifiers, focusing on numerical examples and their significance.

59.3.2 Voltage Gain Calculation

This section covers the calculation of voltage gain in multi-transistor amplifiers, focusing on common source, common drain stages, and their impact on operational bandwidth.

59.3.3 Output Resistance of the CC Stage

This section discusses the output resistance of the common collector (CC) amplifier stage, highlighting its significance in multi-transistor amplifier configurations.

59.3.4 Bandwidth Extension

This section explores the techniques used to enhance the bandwidth of amplifiers by cascading Common Source and Common Drain stages.

Comparison with Other Amplifiers

This section covers the comparison of common source amplifiers with other amplifier types, illustrating their performance parameters.

59.4 Section Overview

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59.4.1 Cell Biased CE Amplifier

This section discusses the characteristics and performance of the Cell Biased Common Emitter (CE) amplifier along with its cascading implications.

59.4.2 Input Resistance Calculation

This section focuses on calculating input resistance in multi-transistor amplifiers, specifically in common source and common drain configurations.

Summary

This section dives into multi-transistor amplifiers, particularly discussing the operation and enhancement of bandwidth through common source and common drain stages.

59.5 Section Overview

Start current section content and materials

Learning Objectives

  • Cascading common source and common drain stages enhances bandwidth considerably.

  • The voltage gain of the common source amplifier remains approximately the same when cascaded with a common drain amplifier.

  • The input resistance can increase dramatically when stages are cascaded, benefiting overall amplifier performance.

Key Concepts

Common Source Amplifier

An amplifier configuration that provides voltage gain and is used in various electronic circuits.

Common Drain Stage

Also known as source follower, this configuration is used to buffer signals with high input resistance and low output resistance.

Upper Cutoff Frequency

The frequency at which the gain of the amplifier begins to decrease, affecting bandwidth.

Cascading Stages

Connecting multiple amplifier stages to enhance performance characteristics like gain and bandwidth.

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
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