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84. Usage of current mirror (Part-B)

84. Usage of current mirror (Part-B)

The chapter discusses the application of current mirrors in various amplifier configurations, including Common Collector, Common Drain, and Differential Amplifiers. It elaborates on the current mirror's role in improving performance metrics such as common mode and differential mode gains, highlighting the underlying principles and equations that govern transistor behavior in these circuits.

Sections

Analog Electronic Circuits

This section discusses the usage of current mirrors in common emitter, common collector, and differential amplifiers.

84.1 Section Overview

Start current section content and materials

84.1.1 Usage of Current Mirror (Part B)

The section discusses the application of current mirrors in various amplifier configurations, including common collector and differential amplifiers.

84.1.2 Common Collector Amplifier

This section explores the concept and workings of the common collector amplifier and the usage of current mirrors within its configuration.

84.1.3 Common Drain Amplifier

The common drain amplifier, also known as the source follower, utilizes a current mirror for biasing and gain improvements.

84.1.4 Differential Amplifier Applications

This section explores the various applications of current mirrors in differential amplifiers, emphasizing improvements in gain and performance.

84.1.5 Active Load Current Mirror

The section discusses the application of active load current mirrors in common collector and common drain amplifiers, highlighting their impact on gain improvement.

84.1.6 Improvements on Common Mode Gain

This section discusses the utilization of current mirrors to enhance the performance of common collectors and differential amplifiers by improving their common mode gain.

84.1.7 Differential Mode Gain

This section discusses the significance and application of differential mode gain in analog electronic circuits, particularly through the use of current mirrors.

Learning Objectives

  • Master the fundamentals of 84. Usage of current mirror (Part-B)

  • Apply learned concepts in practical scenarios

  • Successfully complete all chapter exercises

Key Concepts

Current Mirror

A current mirror is a circuit configuration that replicates a current through one active device by controlling the current through another active device in a circuit, ensuring precise current management.

Common Mode Gain

Common mode gain is the amplification of signals that are common to both input terminals of a differential amplifier; it is often minimized to improve differential performance.

Differential Mode Gain

Differential mode gain represents the amplification of the difference between two input signals in a differential amplifier, enhancing the desired signal while reducing common noise.

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