An Inherently dB-linear All-CMOS Variable Gain Amplifier

被引：1
|
作者：
Kwon, Ji-Wook [1 ]
Ryu, Seung-Tak [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dep EE, Taejon, South Korea
来源：
JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE | 2011年 / 11卷 / 04期
关键词：
Variable gain amplifier; dB-linear; inherently dB-linear; cascode amplifier;
D O I：
10.5573/JSTS.2011.11.4.336
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 paper introduces a simple variable gain amplifier (VGA) structure that shows an inherently dB-linear gain control property. Requiring no additional components for dB-linear control, the structure is compact and power efficient. The designed two-stage VGA shows a gain control range of 60dB with the gain error in the range of +/- 0.4 dB. The power consumption including the output buffer is 20.4 mW from 1.2 V supply voltage with bandwidth of 630 MHz. The prototype was fabricated in a 0.13. m CMOS process and the VGA core occupies 0.06 mm(2)
引用
收藏
页码：336 / 343
页数：8
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