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A low noise compact class AB buffer amplifier with accurate quiescent current control

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Abstract

The authors present a new low-noise class AB buffer amplifier. The proposed buffer amplifier achieves a low noise with fast settling time and low power consumption. The buffer amplifier circuit attains an input referred noise voltage of 12.8 \( {{\text{nV}} /{\sqrt {\text{Hz}}}} \), a DC gain of 108 dB, a unit-gain frequency of 8 MHz, and rising slew rate of 36 V/μs, as the load capacitance equals 150 pF. The circuit is power efficient when driving large capacitive loads and is well suited for low noise low power analog video buffer applications.

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Authors and Affiliations

  1. State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Jian Lv, Yun Zhou, DongLu Zhang & YaDong Jiang

Authors
  1. Jian Lv
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  2. Yun Zhou
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  3. DongLu Zhang
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  4. YaDong Jiang
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Correspondence to Jian Lv.

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Lv, J., Zhou, Y., Zhang, D. et al. A low noise compact class AB buffer amplifier with accurate quiescent current control. Analog Integr Circ Sig Process 65, 283–288 (2010). https://doi.org/10.1007/s10470-010-9468-6

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  • DOI: https://doi.org/10.1007/s10470-010-9468-6

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