A CMOS OTA with extremely large DC open-loop voltage gain

被引：0

作者：

Zhuang, Haoyu ^{[1
]}

Zhu, Zhangming ^{[1
]}

Yang, Yintang ^{[1
]}

Gu, Huaxi ^{[2
]}

Liang, Liang ^{[1
]}

Zhao, Yang ^{[1
]}

机构：

[1] Xidian Univ, Sch Microelect, Xian 710071, Peoples R China

[2] Xidian Univ, Sch Telecommun Engn, Xian 710071, Peoples R China

来源：

IEICE ELECTRONICS EXPRESS | 2013年 / 10卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CMOS OTA; amplifier; gain boosted;

D O I：

10.1587/elex.10.20130242

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：

The DC open-loop voltage Gain is a very important specification for amplifiers. In order to increase this specification, in this paper, we have proposed an improved folded cascode gain boosted amplifier (improved FCGBA) which has extremely large DC open-loop voltage gain. Compared to traditional FCGBA, this novel structure needs only one auxiliary amplifier, so it is energy saving. Finally, with SMIC 0.18 mu m CMOS process of 1.8V supply and Hspice simulator, a corresponding amplifier with a capacitor load of 1.6 pF is designed. Its voltage gain is 153 dB; unit gain bandwidth is 1.91 GHz; phase margin is 64 degrees; 0.01% settling time is 2.36 ns; and the power dissipation is only 12.9 mW. This result confirms the validity of this new structure.

引用

页码：1 / 7

页数：7

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