What This Document Is
This document represents lecture notes from an Introduction to Microelectromechanical Systems (MEMS) course (ELENG 247A) at the University of California, Berkeley. Specifically, it focuses on the design and analysis of switched-capacitor filters, a crucial component in many analog and mixed-signal integrated circuits. It delves into the theoretical underpinnings and practical considerations for implementing these filters in MEMS applications. The material builds upon prior concepts related to switched-capacitor circuits and extends them to more complex filter architectures.
Why This Document Matters
This resource is invaluable for students enrolled in advanced undergraduate or graduate-level courses on MEMS, analog circuit design, or signal processing. It’s particularly helpful for those seeking a deeper understanding of how to design and analyze filters using the switched-capacitor technique. Engineers working on the development of integrated sensors, communication systems, or data acquisition circuits will also find this material beneficial as a reference. Accessing the full content will allow you to solidify your understanding of these essential circuit building blocks.
Topics Covered
* Detailed examination of different switched-capacitor integrator topologies (DDI and LDI)
* Analysis of the impact of parasitic capacitances on filter performance
* Bottom-plate integrator techniques for improved sensitivity
* Design considerations for switched-capacitor resonators, bandpass, and lowpass filters
* Implementation of termination and transmission zeros in filter designs
* Effects of non-ideal circuit behaviors on filter characteristics
* Exploration of double sampling techniques in switched-capacitor filters
What This Document Provides
* Circuit diagrams illustrating key switched-capacitor configurations
* Discussions of the trade-offs involved in selecting different filter architectures
* Conceptual explanations of the relationships between circuit parameters and filter performance
* Insights into the challenges associated with realizing practical switched-capacitor filters
* A foundation for further exploration of advanced filter design techniques
* Detailed analysis of magnitude and phase error characteristics.