What This Document Is
This document represents the lecture notes from the eleventh session of an introductory course on Microelectromechanical Systems (MEMS), specifically ELENG 247A at the University of California, Berkeley. It delves into the intricacies of switched-capacitor filters and their application in data conversion techniques. The material builds upon previous lectures concerning filter design and explores the practical considerations that arise when implementing these circuits.
Why This Document Matters
This lecture is crucial for students seeking a deeper understanding of analog circuit design within the context of MEMS. It’s particularly valuable for those focused on signal processing, data acquisition, and the development of integrated systems. Engineers and researchers working with low-power, high-performance filters will also find this material relevant. Reviewing these notes will be beneficial when tackling assignments, preparing for exams, or working on related projects requiring a solid foundation in switched-capacitor filter theory and design.
Topics Covered
* Continued analysis of switched-capacitor filter characteristics.
* The impact of real-world component limitations on filter performance.
* Bilinear switched-capacitor filter implementations.
* A comparative overview of different filter topologies.
* Fundamentals of data converters and their relationship to switched-capacitor circuits.
* Detailed examination of Direct-Transform Integrator (DDI) and Lossless Discrete Integrator (LDI) designs.
* Analysis of op-amp non-idealities (finite gain, bandwidth, and slew rate) and their effects on filter behavior.
What This Document Provides
* A focused exploration of parasitic effects within switched-capacitor integrators and techniques for mitigation.
* Illustrative explanations of bottom-plate switched-capacitor integrator configurations.
* Z-transform models for analyzing circuit behavior.
* Insights into the design trade-offs associated with different filter architectures.
* A foundation for understanding the challenges and solutions in building practical, high-performance switched-capacitor filters.
