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Conference Paper
Digitally controlled wideband CMOS variable gain amplifier
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- Authors
- Bong Hyuk Park, Seung Sik Lee, Jae Young Kim, Sang Sung Choi
- Issue Date
- 2005-02
- Citation
- International Conference on Advanced Communication Technology (ICACT) 2005, pp.896-899
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- A variable gain amplifier is designed for wideband system. The VGA is implemented in a 0.18 /spl mu/m CMOS process. The gain of the VGA is controlled digitally in dB using proposed a R ladder with switch and decoder. It operates at an IF frequency of 250 MHz and dynamic range is 27 dB.