A balanced output CMOS OTA with wide linear current tunable range

被引：5

作者：

Kaewdang, Khanittha ^{[1
]}

Surakampontorn, Wanlop ^{[2
]}

机构：

[1] Ubon Ratchathani Univ, Fac Engn, Dept Elect & Elect Engn, Warinchamrap 34190, Ubon Ratchathan, Thailand

[2] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Dept Elect, Bangkok 10520, Thailand

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2011年 / 65卷 / 09期

关键词：

Balanced output operational; transconductance amplifier (BOTA); CMOS transconductor; Electronically tunable OTA; Linearly tuned; TRANSCONDUCTOR; FILTERS;

D O I：

10.1016/j.aeue.2010.10.005

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 CMOS-based balanced output operational transconductance amplifier (BOTA) with very wide linear current tunable range is proposed in this paper. The design technique is achieved by the combination of a fully differential transconductor and an electronically variable current gain stage. The transconductance gain of the proposed BOTA can be linearly tuned by an external bias current for more than 4 decades, with less than 4% nonlinearity for the linear input-voltage range of about 0.2 V-peak. The OTA is designed in 0.5 mu m AMIS technology. The performance of the proposed circuit is discussed and confirmed through application example and PSPICE simulation results. (C) 2010 Elsevier GmbH. All rights reserved.

引用

页码：728 / 733

页数：6

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