A Switched-Capacitor Amplifier With True Rail-to-Rail Input Range Without Using a Rail-to-Rail Op-amp

被引：1

作者：

Gopinath, Anjali ^{[1
]}

Adusumalli, Ravi Kumar ^{[1
]}

Vulligaddala, Veeresh Babu ^{[1
]}

Srinivas, M. B. ^{[2
]}

机构：

[1] Ams Semicond India Pvt Ltd, Hyderabad, Andhra Prades, India

[2] BITS Pilani, Dept Elect Engn, Hyderabad Campus, Hyderabad, Telangana, India

来源：

2017 30TH INTERNATIONAL CONFERENCE ON VLSI DESIGN AND 2017 16TH INTERNATIONAL CONFERENCE ON EMBEDDED SYSTEMS (VLSID 2017) | 2017年

关键词：

Switched-capacitor; operational amplifier; common-mode; linearity; gain-compensated; IMPERFECTIONS;

D O I：

10.1109/VLSID.2017.31

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper proposes an alternate switched-capacitor amplifier capable of handling rail-to-rail input common-mode voltage without using a rail-to-rail op-amp. Unlike most existing switched-capacitor architectures, the proposed alternate architecture holds the op-amp input terminals at a fixed voltage level in both the sample and hold phases irrespective of the input signal common-mode voltage. Designed and simulated in AMS 0.35um CMOS process, the implemented architecture, operating on 5V, can handle inputs with common-mode voltage varying from 0.1V to 4.9V while maintaining the op-amp common-mode voltage at 2.5V. Therefore, this architecture significantly relaxes the op-amp design and achieves more than 16-bit linearity over the rail-to-rail input common-mode voltage range.

引用

页码：329 / 334

页数：6

共 8 条

[1] Danchiv A., 2007, FULLY DIFFERENTIAL S
[2] Circuit techniques for reducing the effects of op-amp imperfections: Autozeroing, correlated double sampling, and chopper stabilization
Enz, CC
Temes, GC
[J]. PROCEEDINGS OF THE IEEE, 1996, 84 (11) : 1584 - 1614
[3] Gregorian R., 1981, Microelectronics Journal, V12, P10, DOI 10.1016/S0026-2692(81)80466-1
[4] Reduced nonlinear distortion in circuits with correlated double sampling
Huang, YT
Ferguson, P
Temes, GC
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 1997, 44 (07): : 593 - 597
[5] Switched-Capacitor Level-Shifting Technique With Sampling Noise Reduction for Rail-to-Rail Input Range Instrumentation Amplifiers
Ivanov, Evgeny V.
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2012, 59 (12) : 2867 - 2880
[6] Mansano Andre L. R., 2012, U.S. Patent, Patent No. [8,198,937 B1, 8198937]
[7] Schoenberg B. J. Hosticka, 1991, IEEE J SOLID STATE C, V26
[8] Switched-capacitor track-and-hold amplifiers with low sensitivity to op-amp imperfections
Yoshizawa, Hirokazu
Temes, Gabor C.
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2007, 54 (01) : 193 - 199

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