VLSI Implementation of a GIC Switched Capacitor Filter

摘要

In this research, the design and VLSI implementation of a digitally programmableactive analog filter, based on the Generalized Immittance Converter (GIC) circuit, are presented. The programmable features include the filter type (bandpass, high pass, low pass or notch), the center or cut off frequency, and the quality factor. Switched capacitor networks are used to implement resistances. The design was first simulated and then implemented on a wire wrap board and tested. The circuit was then modeled and re-simulated using the Cadence Design Tools software package. Once the modeled circuit passes all design rule checks the final chip design was then submitted for fabrication. This research project will help provide a knowledge base for using Cadence software for VLSI CMOS design. Once the chip has been fabricated and tested it will provide a base for further development of stray insensitive VLSI design of analog circuits.