A new design topology for low-voltage CMOS current feedback amplifiers

被引：38
|
作者：
Maundy, BJ [1 ]
Sarkar, AR
Gift, SJ
机构：
[1] Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada
[2] Univ W Indies, Dept Elect & Comp Engn, St Augustine, Trinidad Tobago
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2006年 / 53卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
current feedback amplifier (CIA); low-voltage operational amplifier;
D O I：
10.1109/TCSII.2005.855731
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new topology for designing low-voltage current feedback amplifiers (CFAs) is presented. By employing a second-generation positive current conveyor followed by an operational amplifier in an unconventional manner, the design circumvents the problem of trying to achieve large transimpedance in a low-voltage environment. It is shown that this CIA configuration also results in near gain independent closed-loop bandwidth defined by a single feedback resistor. The proposed amplifier was verified experimentally by a chip designed using Taiwan Semiconductor Manufacturing Company's 0.18-mu m digital CMOS process of a single-ended power supply of 1.8 V.
引用
收藏
页码：34 / 38
页数：5
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