A 40dB, 100MHz CMOS IF variable gain amplifier for DVB-C receivers

被引：0
|
作者：
Yun, TH [1 ]
Yin, L [1 ]
Tang, SL [1 ]
Wu, JH [1 ]
机构：
[1] SE Univ, Natl ASIC Syst Engn Technol Res Ctr, Nanjing 210096, Peoples R China
来源：
2005 6TH INTERNATIONAL CONFERENCE ON ASIC PROCEEDINGS, BOOKS 1 AND 2 | 2005年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A CMOS IF VGA used for DVB-C receivers is presented in this paper. The VGA core is based on current-steering structure, and several optimization methods are used to improve the linearity and stability. A novel CMOS exponential voltage generator is designed to realize the linear-in-dB control characteristic. The simulation results based on 0.25 mu m CMOS process indicate that the VGA can provide 40 dB gain control range, the IIP3 at the minimum gain setting 17.2 dBm, and the minimum NF 7.8 dB. The overall current dissipation is less than 23 mA at 3.3 V supply voltage.
引用
收藏
页码：508 / 511
页数：4
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