What This Document Is
These study notes provide a focused exploration of continuous-time filters, a crucial component within the field of Microelectromechanical Systems (MEMS). Specifically geared towards students in ELENG 247A at UC Berkeley, these notes delve into the design and implementation considerations for these filters, offering a detailed look at various techniques and architectures. The material builds upon foundational concepts and progresses towards more advanced topics in analog circuit design for MEMS applications.
Why This Document Matters
This resource is ideal for students currently enrolled in an introductory MEMS course, or those reviewing the fundamentals of analog filter design. It’s particularly beneficial when tackling assignments or preparing for exams that require a strong understanding of filter characteristics, implementation trade-offs, and tuning methods. These notes can serve as a valuable companion to lectures and textbook readings, offering a consolidated and focused perspective on continuous-time filtering. Understanding these concepts is essential for anyone designing or analyzing MEMS-based sensor interfaces and signal conditioning circuits.
Topics Covered
* Continuous-time filter fundamentals and characteristics
* Opamp-based filter implementations (RC, MOSFET-RC)
* Gm-C filter architectures and design considerations
* Frequency tuning techniques for continuous-time filters
* Impact of component variations and non-idealities on filter performance
* Second-order filter design and analysis
* Techniques for automatic on-chip filter tuning
* Considerations for systems integrating filters with ADCs and DSPs
What This Document Provides
* Detailed examination of integrator implementations using various transistor configurations.
* Exploration of the trade-offs associated with different filter topologies.
* Insights into the design challenges related to parasitic effects and device mismatch.
* Discussion of methods for achieving accurate frequency control in filter circuits.
* Analysis of bandpass filter design using integrator-based approaches.
* Examination of terminated Gm-C integrator circuits and their key parameters.
* Overview of techniques for optimizing filter quality factor (Q).
