0.7-V Three-Stage Class-AB CMOS Operational Transconductance Amplifier

被引：99
|
作者：
Cabrera-Bernal, Elena [1 ]
Pennisi, Salvatore [2 ]
Grasso, Alfio Dario [2 ]
Torralba, Antonio [1 ]
Gonzalez Carvajal, Ramon [1 ]
机构：
[1] Univ Seville, Escuela Tecn Super Ingn, Ingn Elect, E-41012 Seville, Spain
[2] Univ Catania, Dipartamento Ingn Elettr Elettron & Informat, I-95125 Catania, Italy
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2016年 / 63卷 / 11期
关键词：
Bulk-driven; class-AB; CMOS analog integrated circuits; low-voltage; operational transconductance amplifier; DESIGN METHODOLOGY; OTA; CIRCUIT;
D O I：
10.1109/TCSI.2016.2597440
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 simple high-performance architecture for bulk-driven operational transconductance amplifiers (OTAs) is presented. The solution, suitable for operation under sub 1-V single supply, is made up of three gain stages and, as an additional feature, provides inherent class-AB behavior with accurate and robust standby current control. The OTA is fabricated in a 180-nm standard CMOS technology, occupies an area of 19.8 . 10(-3) mm(2) and is powered from 0.7 V with a standby current consumption of around 36 mu A. DC gain and unity gain frequency are 57 dB and 3MHz, respectively, under a capacitive load of 20 pF. Overall good large-signal and small-signal performances are achieved, making the solution extremely competitive in comparison to the state of the art.
引用
收藏
页码：1807 / 1815
页数：9
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