operation analysis and comparison of different structures of time -domain comparators
محل انتشار: سومین کنفرانس بین المللی پژوهش در علوم و مهندسی
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 524
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شناسه ملی سند علمی:
ICRSIE03_349
تاریخ نمایه سازی: 8 آذر 1396
چکیده مقاله:
One of the most important analog circuits required in many analog integrated circuits is comparator. design of comparator becomes an important issue when design technology and supply voltage is scaled down. Due to the non-linear behaviour of threshold voltage (VT) with the advancement of CMOS technology, performance of comparator is most affected. Many versions of comparator are proposed to achieve desirable output in sub-micron and deep sub-micron design technologies. One of the ways to overcome the challenge of low-voltage design is to process a signal in the time-domain. Time resolution has been improved in nanometer-scale devices due to the reduction of gate delay, despite the reduction in supply voltage. Hence, time-domain processing potentially offers a better solution compared to voltage-based methods, when implemented in deep sub-micron VLSI fabrication processes. This paper presents a comparative review of different types of time-domain comparators. Also all mentioned types of comparators are analyzed on the basis of different characteristics and sources of error in this comparators and their reduction technique is discussed.
کلیدواژه ها:
time-domain comparator ، low-power and low-voltage designs ، ladder-based comparator ، differential time-domain comparator
نویسندگان
Seyyed Sajjad Mortazavi
Msc Student, Department of Electrical Engineering, Imam Reza International University, Iran,
Samaneh Babayan-Mashhadi
Assistant Professor, Department of Electrical Engineering, Imam Reza International University, Iran,