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.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0719102-184531 |
| Date | 19 July 2002 |
| Creators | Hsieh, Chi-Song |
| Contributors | Jyi-Tsong Lin, Yao-Tsung Tsai, Chia-Hsiung Kao, Jinn-Shyan Wang, Shyh-Jye Jou |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719102-184531 |
| Rights | restricted, Copyright information available at source archive |
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