A 63-dB gain OTA operating in subthreshold with 20-nW power consumption

被引：26

作者：

Akbari, Meysam ^{[1
]}

Hashemipour, Omid ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Fac Elect Engn, GC, Tehran, Iran

来源：

INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS | 2017年 / 45卷 / 06期

关键词：

operational amplifier; source degeneration; bulk-driven; weak inversion; CASCODE AMPLIFIER; FOLDED CASCODE;

D O I：

10.1002/cta.2248

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：

This paper presents a two-stage bulk-driven operational transconductance amplifier operating in weak-inversion region. The proposed amplifier is upgraded using recycling structure, current shunt technique, positive feedback source degeneration and indirect frequency compensation feedback to enhance transconductance under a reasonable stability. Combining these approaches leads to an ultra-low-power high performance amplifier without increasing power dissipation compared to the conventional one. Simulation results in 0.13-mu m complementary metal-oxide-semiconductor technology show the proposed structure achieves a 63-dBDC gain at 0.25-V supply voltage with just 20-nW power dissipation. Copyright (c) 2016 John Wiley & Sons, Ltd.

引用

收藏

页码：843 / 850

页数：8

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