A high-speed differential CMOS Schmitt trigger with regenerative current feedback and adjustable hysteresis

被引：26
|
作者：
Yuan, Fei [1 ]
机构：
[1] Ryerson Univ, Dept Elect & Comp Engn, Toronto, ON M5B 2K3, Canada
来源：
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2010年 / 63卷 / 01期
关键词：
Schmitt trigger; Current-mode feedback; Variable hysteresis;
D O I：
10.1007/s10470-009-9374-y
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a brief overview of Schmitt triggers and proposes a new differential current-feedback Schmitt trigger. The hysteresis of the proposed Schmitt trigger is generated using regenerative current feedback and can be adjusted by varying the current of the regenerative feedback network. The center of the hysteresis can also be adjusted by varying the common-mode input voltage. The proposed Schmitt trigger has the characteristics of current-mode circuits, making it particularly attractive for low-voltage high-speed applications. The proposed Schmitt trigger has been designed in TSMC-0.18 mu m 1.8 V CMOS technology and analyzed using Spectre from Cadence Design Systems with BSIM3V3 device models. Simulation results are presented.
引用
收藏
页码：121 / 127
页数：7
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