A high speed/power ratio continuous-time CMOS current comparator

被引：0
|
作者：
Chen, L [1 ]
Shi, BX [1 ]
Lu, C [1 ]
机构：
[1] Tsing Hua Univ, Inst Microelect, Beijing 100084, Peoples R China
来源：
ICECS 2000: 7TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS & SYSTEMS, VOLS I AND II | 2000年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Current comparator is a fundamental component of current-mode circuits. A new high-performance continuous-time CMOS current comparator is proposed in this paper, which comprises one CMOS complementary amplifier, two resistive-load amplifiers and two CMOS inverters. A MOS resistor is used as the CMOS complementary amplifier's negative feedback. Because the voltage swings of the CMOS complementary amplifier are reduced by low input and output resistances, the delay time of the current comparator is shortened. Its power consumption is reduced by the resistive-load amplifiers. Simulation results based on 1.2 mum CMOS technology parameters show the speed/power ratio of this new current comparator is better than existing high-performance current comparators. Besides, the new current comparator occupies small area and is process-robust, so it is suitable to high-speed and low-power applications.
引用
收藏
页码：883 / 886
页数：4
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