期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2013
卷号：3
期号：4
出版社：S.S. Mishra
摘要：Current mode signal processing implemented in CMOS technology has received increasing interest in the past decades. The circuit implemented in current mode technique occupies small area, consumes less power dissipation and achieves high operation speed. Moreover, many sensors in SOC such as temperature sensors, pho to sensors provide current signal. In these applications and high speed data converters such as RF, A/D, D/A converters, oscillators where the function of comparison is a limiting component for accuracy, noise and power consumption reasons, the introduction of current mode solutions is highly desirable. To take the advantages of current mode circuits over the voltage mode limitations, this thesis work proposes two new CMOS Current Comparator circuits, suitable for High Speed and low Power dissipation applications. Modified circuit had been simulated in a proprietary 180nm CMOS process, using Cadence Spectre Simulator and UMC models. Current comparator circuit had impressed with current pulses ranging from Milli-Amperes to Nano-Amperes and its Speed and Power consumption had been simulated and measured. When made a comparison with the earlier reported circuits, our circuit achieves Very High Speed of operation and low power consumption. For Micron range input currents, the power consumption of the newly improved current comparator is very much lower than the other earlier reported circuits
关键词：Current Comparator; CMOS; Current Mirror; Cascode Current Mirrors; DC Analysis
