A class-AB CMOS variable gain amplifier for low-voltage applications

被引：2
|
作者：
Khumsat, Phanumas [1 ]
Sakphrom, Siraporn [2 ]
Thanachayanont, Apinunt [2 ]
机构：
[1] Prince Songkla Univ, Fac Engn, Dept Elect Engn, Hat Yai 90112, Thailand
[2] King Mongkuts Inst Technol Ladkrabang, Fac Engn & Res Ctr Commun Informat Technol, Bangkok 10520, Thailand
来源：
2007 INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS, VOLS 1 AND 2 | 2007年
关键词：
D O I：
10.1109/ISICIR.2007.4441793
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 class-AB 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 0.5-V voltage supply with MOS's minimum threshold voltage of 0.43V while draining static power consumption less than 25 mu W.
引用
收藏
页码：49 / +
页数：2
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