• DocumentCode
    1889750
  • Title

    A 105dB-gain 500MHz-bandwidth 0.1Ω-output-impedance amplifier for an amplitude modulator in 65nm CMOS

  • Author

    Chul Kim ; Chang-seok Chae ; Young-Sub Yuk ; Yi-Gyeong Kim ; Jong-kee Kwon ; Gyu-Hyeong Cho

  • Author_Institution
    KAIST, Daejeon, South Korea
  • fYear
    2010
  • fDate
    7-11 Feb. 2010
  • Firstpage
    88
  • Lastpage
    89
  • Abstract
    A 500 MHz -3 dB bandwidth linear amplifier in 65 nm CMOS at 1.2 V supply is presented for an amplitude modulator in a polar transmitter. The design uses a gain-boosting scheme for 105 dB DC gain at an 8 ¿ load and a buffered switching Class-AB bias scheme. It has 0.1 ¿ output impedance at 5 MHz and can drive 60 mA peak current. The chip efficiency is 83.5% and area is 1.35 mm2.
  • Keywords
    CMOS analogue integrated circuits; amplifiers; amplitude modulation; modulators; radio transmitters; CMOS; amplitude modulator; current 65 mA; frequency 5 MHz; frequency 500 MHz; gain 105 dB; gain-boosting scheme; impedance amplifier; linear amplifier; polar transmitter; size 65 nm; voltage 1.2 V; Amplitude modulation; Bandwidth; Circuits; Energy consumption; Impedance; MOSFETs; Mirrors; Negative feedback; Power amplifiers; Voltage;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
  • Conference_Location
    San Francisco, CA
  • ISSN
    0193-6530
  • Print_ISBN
    978-1-4244-6033-5
  • Type

    conf

  • DOI
    10.1109/ISSCC.2010.5434037
  • Filename
    5434037
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1889750