Novel Low-Voltage Low-Power Exponential Circuits and Variable Gain Amplifiers (VGA)
碩士 === 國立中山大學 === 電機工程學系研究所 === 90 === 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 conver...
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| Format: | Others |
| Language: | en_US |
| Published: |
2002
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| Online Access: | http://ndltd.ncl.edu.tw/handle/59541005797916039795 |
| Summary: | 碩士 === 國立中山大學 === 電機工程學系研究所 === 90 ===
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 0.25μm CMOS technology by HSPICE simulations. The simulation results confirm the feasibility of the proposed VGAs.
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