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87. Numerical examples on current mirror and its applications (Part-B)
Numerical examples of current mirror circuits are presented with a focus on their application in MOSFET and BJT configurations. Key improvements, such as the introduction of a cascode transistor to enhance output resistance and minimize non-ideality factors, are emphasized. The chapter illustrates the calculations involved in determining voltages and currents in various configurations while maintaining the operational conditions for high output resistance.
Sections
This section covers numerical examples on current mirrors and their applications, focusing on enhancing circuit performance using cascode transistors.
This section introduces topics related to analog electronic circuits, specifically current mirrors and their applications.
This section discusses the MOSFET version of a current mirror circuit, focusing on improving output resistance through cascode configuration.
This section discusses the calculation of output resistance in current mirror circuits, particularly when improved with cascode transistors.
This section explores the BJT version of a current mirror, discussing improvements in output resistance and the significance of cascode configurations.
This section explores the common source amplifier example using numerical analysis and concepts of current mirrors, focusing on MOSFET and BJT configurations.
Adding a cascode transistor in current mirrors enhances the output resistance and reduces sensitivity to voltage variations.
Different sizes and current ratios of transistors can be utilized to achieve desired biasing and performance in current mirror circuits.
For BJT current mirrors, approximating V_BE close to 0.6 V simplifies calculations related to voltage and current.
Current Mirror
A circuit configuration that mirrors the current from a reference branch to an output branch, allowing precise current sourcing and sinking.
Cascode Transistor
A transistor placed in series with another to improve the output resistance and reduce the effect of voltage changes on output current.
Output Resistance
The resistance seen by the output terminals of the current mirror, critical for determining how much the output current varies with changes in output voltage.
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