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Novel Low-Voltage Low-Power Exponential Circuits and Variable Gain Amplifiers (VGA)

Two novel ultra-low-voltage (ULV) low-power (LP) variable gain amplifiers (VGA) are presented in this paper. These amplifiers based on complementary MOS transistors operating in weak inversion region are composed of pseudo-exponential current-to-current converters and analog multipliers. The gain of the amplifiers can be controlled by an exponential function circuit. The proposed circuits have been verified with the 0.25£gm CMOS technology by HSPICE simulations. The simulation results confirm the feasibility of the proposed VGAs.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0719102-184531
Date19 July 2002
CreatorsHsieh, Chi-Song
ContributorsJyi-Tsong Lin, Yao-Tsung Tsai, Chia-Hsiung Kao, Jinn-Shyan Wang, Shyh-Jye Jou
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719102-184531
Rightsrestricted, Copyright information available at source archive

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