Single-Stage OTA Biased by Voltage-Combiners With Enhanced Performance Using Current Starving

被引：14

作者：

Povoa, R. ^{[1
,2
]}

Lourenco, N. ^{[1
]}

Martins, R. ^{[1
]}

Canelas, A. ^{[1
]}

Horta, N. ^{[1
]}

Goes, J. ^{[2
]}

机构：

[1] Univ Lisbon, Inst Super Tecn, Inst Telecomunicacoes, ICG IT, P-1049001 Lisbon, Portugal

[2] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Engn Electrotecn & Comp, CTS UNINOVA, P-2829516 Caparica, Portugal

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2018年 / 65卷 / 11期

关键词：

Voltage-combiners; amplifier; OTA; single-stage; current starving; energy-efficiency; gain enhancement; CASCODE AMPLIFIER; FOLDED CASCODE; HIGH-SPEED; LOW-POWER;

D O I：

10.1109/TCSII.2017.2777533

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 brief presents an improved single-stage amplifier biased by voltage-combiners, through the proper usage of current starving. The topology designed and fabricated shows an enhancement of the low-frequency gain, an improvement in the establishing time due to enhanced gain-bandwidth product, and a high improvement of the energy efficiency. The circuit was optimized using AIDA-C, a state-of-the-art multi-objective multi-constraint analog IC sizing and optimization tool, and simulation results demonstrate that a gain above 60 dB and a figure-of-merit over 900 MHzxpF/mA are acquirable with this circuit, using the UMC 130-nm technology design kit. The circuit was fabricated and experimentally measured, presenting a gain of 58 dB with a figure-of-merit of 1102 MHzxpF/mA, for a 3.3 V supply source.

引用

页码：1599 / 1603

页数：5

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