An all CMOS 84dB-linear low-power variable gain amplifier

被引:0
|
作者
Duong, QH [1 ]
Le-Quan [1 ]
Lee, SG [1 ]
机构
[1] Informat & Commun Univ, Taejon 305714, South Korea
关键词
variable gain amplifier (VGA); automatic gain control (AGC);
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 new exponential approximation function is implemented into a variable gain amplifier (VGA). The newly proposed VGA topology provides low-power, small chip size, and wide control gain range. The VGA is fabricated in 0.18 mu m CMOS technology and measurements show a gain variation of more than 84dB in two cascaded stages, and 80dB-linear range with a linearity error of less than +/- 1dB. The P1dB varies from -42dBm to -22dBm. The power dissipation is less than 3.6mA from 1.8V supply. The chip excluding bondpads occupies 0.4mm(2).
引用
收藏
页码:114 / 117
页数:4
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