A low-voltage class-AB CMOS variable gain amplifier

被引：0
|
作者：
Khumsat, Phanumas [1 ]
Anantaseth, Piamsuk [1 ]
Isarasena, Pasin [2 ]
机构：
[1] Prince Songkla Univ, Fac Engn, Dept Elect Engn, Hat Yai 90112, Thailand
[2] Natl Sci Technol Dev Agcy, Natl Elect & Comp Technol Ctr, Thailand IC Design Incubat, Bangkok, Thailand
来源：
2007 50TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-3 | 2007年
关键词：
D O I：
暂无
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 compact class-AB variable gain amplifier has been proposed. The amplifier structure is based on two-stage architecture comprising a linear transconductor cascaded by a current amplifier-based feedback transimpedance amplifier. The major advantage of such VGA circuit is its ability to offer a good degree of signal linearity without sacrificing the original advantages of its predecessor on both aspects of the power consumption and circuit complexity. Superiority of the proposed VGA has been confirmed by circuit simulation employing 0.18 mu m standard CMOS technology in designing a 10-MHz VGA under 0.5V voltage supply with MOS's minimum threshold voltage of 0.43V while draining static power consumption less than 25 mu W.
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页码：214 / +
页数：2
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