A new modeling and optimization of gain-boosted cascode amplifier for high-speed and low-voltage applications

被引：57

作者：

Ahmadi, MM ^{[1
]}

机构：

[1] Univ Calgary, Dept Elect & Comp Engn, Calgary, AB T2N 1N4, Canada

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2006年 / 53卷 / 03期

关键词：

analog circuits; cascode amplifier; CMOS; gain boosting;

D O I：

10.1109/TCSII.2005.858493

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：

Because of limited output swing, the basic structure of a gain-boosted cascode amplifier (GBCA) cannot be used to design a low-voltage operational amplifier. In this paper, we investigate the design of a high-swing GBCA, and find the optimum bandwidth for the boosting or feedback amplifier. This bandwidth eliminates the slow-settling component in the step response, prevents the gain-boosting loop from being unstable, and results in the shortest settling time. Finally, we present a very high-speed and high-swing amplifier suitable for low-voltage applications.

引用

页码：169 / 173

页数：5

共 10 条

[1]

Ahmadi MM, 2003, ICECS 2003: PROCEEDINGS OF THE 2003 10TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS 1-3, P683

[2]

AHMADI MM, 2003, P EUR C CIRC THEOR D, V3, P401

[3]

Aloisi W, 2002, 2002 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL I, PROCEEDINGS, P321

[4] A FAST-SETTLING CMOS OP AMP FOR SC CIRCUITS WITH 90-DB DC GAIN [J].

BULT, K ;

GEELEN, GJGM .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1990, 25 (06) :1379-1384

[5] Improved design criteria of gain-boosted CMOS OTA with high-speed optimizations [J].

Das, M .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 2002, 49 (03) :204-207

[6] Improved synthesis of gain-boosted regulated-cascode CMOS stages using symbolic analysis and gm/ID methodology [J].

Flandre, D ;

Viviani, A ;

Eggermont, JP ;

Gentinne, B ;

Jespers, PGA .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1997, 32 (07) :1006-1012

[7]

Johns D.A., 2008, Analog integrated circuit design

[8] RELATIONSHIP BETWEEN FREQUENCY-RESPONSE AND SETTLING TIME OF OPERATIONAL AMPLIFIERS [J].

KAMATH, BY ;

MEYER, RG ;

GRAY, PR .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1974, SC 9 (06) :347-352

[9]

*MATHW INC, MATLAB 6 5

[10]

Razavi B., 2002, DESIGN ANALOG CMOS I

← 1 →