Using the weak inversion region to optimize input stage design of CMOS op amps

被引：74

作者：

Comer, DJ ^{[1
]}

Comer, DT ^{[1
]}

机构：

[1] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2004年 / 51卷 / 01期

关键词：

input stage; low-distortion; weak inversion;

D O I：

10.1109/TCSII.2003.821517

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：

Operation of MOS devices in the strong, moderate, and weak inversion regions is considered. The advantages of designing the input differential stage of a CMOS op amp to operate in the weak or moderate inversion region are presented. These advantages include higher voltage gain, less distortion, and ease of compensation. Specific design guidelines are presented to optimize amplifier performance. Simulations that demonstrate the expected improvements are given.

引用

页码：8 / 14

页数：7

共 13 条

[1]

ALLEN PE, 2002, CMOS ANALOG CIRCUIT, pCH3

[2]

BINKLEY DM, IEEE T COMPUTER AID, V22, P225

[3]

COMER DJ, IN PRESS IEEE T ED

[4]

COMER DJ, 2002, FUNDAMENTALS ELECT C, pCH22

[5] A MICROPOWER CMOS-INSTRUMENTATION AMPLIFIER [J].

DEGRAUWE, M ;

VITTOZ, E ;

VERBAUWHEDE, I .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1985, 20 (03) :805-807

[6] An MOS transistor model for RF IC design valid in all regions of operation [J].

Enz, C .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2002, 50 (01) :342-359

[7]

Enz C., 1996, DESIGNING LOW POWER, P79

[8] AN ANALYTICAL MOS-TRANSISTOR MODEL VALID IN ALL REGIONS OF OPERATION AND DEDICATED TO LOW-VOLTAGE AND LOW-CURRENT APPLICATIONS [J].

ENZ, CC ;

KRUMMENACHER, F ;

VITTOZ, EA .

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 1995, 8 (01) :83-114

[9]

Gray P., 2001, ANAL DESIGN ANALOG I

[10]

Madrenas J, 1996, IEEE T CIRCUITS-II, V43, P70, DOI 10.1109/82.481479

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