Graduate Thesis Or Dissertation
 

Current mode analog and digital circuit design

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  • In this dissertation, two important current mode circuit design subjects have been explored. In the first part, the switched-current circuit technique has been investigated. The fundamental performance and limitations of this technique are explored. One of the major limitations, the signal distortion caused by clock feedthrough has been substantially reduced by a newly developed clock feedthrough cancellation technique. In addition, a filter synthesis technique has been developed by directly simulating the structure of digital filter. Several experimental CMOS prototypes have been designed and fabricated. The measured frequency and phase responses demonstrated the feasibility of this synthesis technique. In the second part, a new logic family called current-steering logic has been developed. The fundamental performance and characteristics of this technique have been discussed including the basic inverter and NOR gate with DC analysis, transient analysis and power-delay product. It has been shown that the current-steering logic has, a much smaller current spike than conventional CMOS logic circuits, which is especially desirable in mixed-mode applications. Several experimental prototypes have verified the functionality and performance of this new technique.
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  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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