A Programmable ASIC Design of a Low Sensitivity Sampled Data Filter

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Authors
Michael, Sherif
Subjects
ASIC
VLSI
Programmable Filters
Switched Capacitors
Low Sensitivity
Low Power
Advisors
Date of Issue
2007-12
Date
Dec 29-31, 2007
Publisher
Language
Abstract
In this paper, a CMOS custom Integrated Circuit featuring a multi-stage Universal Switched-Capacitor (SC) Filter is introduced. The network is based on the Generalized Immittance Converter (GIC) configuration, known for its excellent passive and active sensitivities. CMOS switches were used for elements relocation and are digitally controlled to select and realize different filter topologies. Switches were also used to control banks of binary-weighted capacitors that determine the filter center frequency, quality factor as well as its order. The bilinear transformation was utilized in the SC implementation of the filter resistive elements. Extra care was considered in the design procedure to minimize the effect of stray capacitors on the network transfer functions. The result was a general purpose digitally programmable multi-stage network that can equally compete with the best available stray insensitive filter. The design also inherits the low active and passive sensitivities the GIC enjoys.
Type
Article
Description
Series/Report No
Department
Electrical and Computer Engineering
Organization
Identifiers
NPS Report Number
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Funder
Format
Citation
6th WSEAS Int. Conf. on CIRCUITS, SYSTEMS, ELECTRONICS, CONTROL & SIGNAL PROCESSING, Cairo, Egypt, Dec 29-31, 2007
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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