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High frequency/high dynamic range CMOS VGA

High frequency/high dynamic range CMOS VGA

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  • Author(s): W.C. Song 1 ; C.J. Oh 1 ; G.H. Cho 2 ; H.B. Jung 1
    • View affiliations
    • Affiliations: 1: Micro-Electronics Laboratory, Analog circuit team, Electronics and Telecommunications Research Institute, Taejon, Korea
      2: Micro-Electronics Laboratory, Analog circuit team, Korea Advanced Institute of Science and Technology, Taejon, Korea
  • Source: Volume 36, Issue 13, 22 June 2000, p. 1096 – 1098
    DOI:  10.1049/el:20000834 , Print ISSN 0013-5194, Online ISSN 1350-911X
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A novel CMOS variable gain amplifier (VGA) with high frequency and high dynamic range is proposed. The VGA has a controllable gain range of –50 dB – +50 dB which can be controlled by adjusting the external voltage as well as an enhanced operating frequency range up to 200 MHz. It is fabricated using 0.35 µm CMOS technology and has a core area of 580 × 660 µm.

Inspec keywords: intermediate-frequency amplifiers; CMOS analogue integrated circuits

Other keywords: VGA; CMOS; dynamic range; -50 to 50 dB; core area; controllable gain range; IF amplifiers; operating frequency range; external voltage; variable gain amplifier; 0.35 micron

Subjects: Amplifiers; CMOS integrated circuits

References

    1. 1)
      • Piazza, F., Orsatti, P., Huang, Q., Miyakawa, H.: `A 2 mA/3 V 71 MHz IF amplifier in 0.4 µm CMOS programmable over80 dB range', ISSCC Dig. Tech. Papers, February 1997, p. 78–79.
    2. 2)
      • Sahota, G.S., Persico, C.J.: `High dynamic range variable-gain amplifier for CDMA wireless application', ISSCC Dig. Tech. Papers, February 1997, p. 374-375.
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