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	A CMOS wideband variable gain amplifier
	Wang Ziqiang ; Chi Baoyong ; Wang Zhihua
	2010-05-06 ; 2010-05-06
关键词	Theoretical or Mathematical/ amplification CMOS integrated circuits integrated circuit modelling wideband amplifiers/ CMOS wideband variable gain amplifier frequency response source degeneration resistor amplifier bandwidth power consumption compensation capacitors voltage peak g/sub m/-boost circuit TMSC CMOS technology gain range 3.15 mW 3.3 V 0 to 40 dB 5 pF/ B2570D CMOS integrated circuits B1220 Amplifiers B2570A Semiconductor integrated circuit design, layout, modelling and testing/ power 3.15E-03 W voltage 3.3E+00 V gain 0.0E+00 to 4.0E+01 dB capacitance 5.0E-12 F
中文摘要	A CMOS wideband low power variable gain amplifier (VGA) is presented. The frequency response of a common source amplifier that makes use of a source degeneration resistor is analyzed. The bandwidth of the amplifier is enlarged without extra power consumption by adding compensation capacitors to change the location of the poles and zeros. The voltage peaking that appeared at low gain is solved and the linearity is improved by using a g/sub m/-boost circuit. The VGA is designed using TSMC 0.25 mu m CMOS technology. Simulation results show that the VGA core consumes 3.15 mW at 3.3 V supply voltage and has a gain range from 0 to 40 dB. Its 3 dB bandwidth is larger than 340 MHz and OIP3 is higher than 3.5 dBm with a 5 pF load.
语种	中文 ; 中文
出版者	Science Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11728]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Ziqiang,Chi Baoyong,Wang Zhihua. A CMOS wideband variable gain amplifier[J],2010, 2010.
APA	Wang Ziqiang,Chi Baoyong,&Wang Zhihua.(2010).A CMOS wideband variable gain amplifier..
MLA	Wang Ziqiang,et al."A CMOS wideband variable gain amplifier".(2010).

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