Design and analysis of DC gain and transconductance boosted recycling folded cascode OTA

被引：56

作者：

Akbari, Meysam ^{[1
]}

Biabanifard, Sadegh ^{[1
]}

Asadi, Shahrouz ^{[2
]}

Yagoub, Mustapha C. E. ^{[3
]}

机构：

[1] ShahidBeheshti Univ, GC, Microelect Lab, Tehran, Iran

[2] ShahidBeheshti Univ, GC, Dept Commun Engn, Tehran, Iran

[3] Univ Ottawa, Sch Elect Engn & Comp Sci, Ottawa, ON, Canada

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2014年 / 68卷 / 11期

关键词：

Recycling amplifier; Folded cascode; Positive feedback; Transconductance; AMPLIFIER;

D O I：

10.1016/j.aeue.2014.05.007

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 technique for improving the transconductance and low frequency output impedance of recycling folded cascode (RFC) amplifiers is presented. This enhancement was achieved by using a positive feedback and upgrading the recycling structure. The new structure profits from better transconductance, slew rate, and DC gain in comparison with conventional folded cascode (FC) amplifier. Moreover, the input referred noise is reduced and the phase-margin improved. The enhanced amplifier, simulated in 0.18 mu m CMOS technology, exhibits a DC gain enhancement of 16.3 dB as well as 115.5 MHz increase in gain bandwidth compared to conventional FC configuration. The amplifier consumes 360 mu W @ 1.2V which makes it suitable for low-voltage applications. (C) 2014 Elsevier GmbH. All rights reserved.

引用

页码：1047 / 1052

页数：6

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