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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.
References
Lecture 87.pdfClass Notes
Memorization
What we have learnt
Final Test
Revision Tests
Term: Current Mirror
Definition: A circuit configuration that mirrors the current from a reference branch to an output branch, allowing precise current sourcing and sinking.
Term: Cascode Transistor
Definition: A transistor placed in series with another to improve the output resistance and reduce the effect of voltage changes on output current.
Term: Output Resistance
Definition: 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.