What This Document Is
This is a laboratory experiment guide for ELENG 140, Linear Integrated Circuits, at the University of California, Berkeley. Specifically, it details the first part of a three-week lab focused on the fundamental building blocks of operational amplifiers using discrete bipolar junction transistors (BJTs). It’s designed to be used in conjunction with hands-on circuit building and measurement, and culminates in a single comprehensive lab report. This material explores the theoretical underpinnings and practical implementation of key analog circuit techniques.
Why This Document Matters
This resource is essential for students enrolled in ELENG 140 who are seeking to solidify their understanding of operational amplifier design principles. It’s particularly valuable during the laboratory portion of the course, providing a structured approach to building, analyzing, and testing discrete BJT circuits. Students preparing for more advanced coursework in analog circuit design will find a strong foundation here. Access to the full document unlocks detailed procedures and expected results for a complete learning experience.
Topics Covered
* Differential Amplifier circuits and analysis
* Current mirror configurations (simple and Widlar)
* BJT biasing techniques (resistive and current mirror)
* Measurement of differential and common-mode gain
* Impact of component matching on circuit performance
* Practical considerations for circuit construction and measurement
* Power supply bypassing and noise reduction
What This Document Provides
* A detailed introduction to the experiment’s objectives and context within the broader course.
* A comprehensive list of required components, including specific transistor models and passive components.
* Circuit schematics for key building blocks, enabling students to visualize the connections.
* Guidance on performing critical circuit measurements and analyzing the results.
* References to datasheets for essential components, ensuring accurate design and implementation.
* A structured procedure for building and testing circuits, promoting a systematic approach to experimentation.
