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Rail-to-Rail High Gain Telescopic Operational Amplifier Using Positive Feedback Technique

Gil Su Kim, Hoon Jae Ki, Meejoung Kim, Soo Won Kim
  • Abstract:
    A CMOS very high DC-gain telescopic amplifier that uses internal positive feedback technique is presented. The structure of considered amplifier is consisted of rail-to-rail output swing and very high DC-gain. Simulation results predict a DC-gain can be achieved larger than 100 dB without limiting the output swing. The proposed amplifier is applied to sample and hold circuit for 10bits 100 Ms/s ADC.
  • Keywords:
    Positive feedback, Amplifier, Telescopic, Output swing, high DC-gain, Bandwidth
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  • DOI:
    _unreg_iwadc-2003.24

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