Improving toggle rate in a rail-to-rail comparator output stage
Name
51585845-MIT.pdf
Description
Full printable version
Size
2.38 MB
Format
Adobe PDF
Checksum (MD5)
9ed49b6263ce443c555aa69fbce656d5
Author(s)
Morris, John D. (John David), 1978-
Advisor(s)
Hae-Seung Lee.
Date Issued
2001
Publisher
Massachusetts Institute of Technology
Abstract
The demand for high-speed components has driven an increase in the speed of analog comparators, a building block for many analog circuits. This paper describes the modification of one of Linear Technology's low-cost, high-speed comparators to increase the output toggle rate beyond the one hundred megahertz range. The essential modifications to the output stage mainly relate to overcoming quasi-saturation of the output devices by extracting unwanted, stored base charge. Additional features were added into a dual comparator package with a tiny footprint to increase consumer interest and to diversify it from other comparators in Linear Technology's line. A final circuit design and physical silicon layout were designed using computer design tools, and the IC was fabricated and tested. The first silicon was tested extensively and worked successfully with only minor undesired discrepancies that were deemed acceptable. The LT1715 design was successful since the design itself accomplished all the desired specifications and the part is now available for sale.
Description
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
Includes bibliographical references.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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