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

  • Authors:

  • Jian Lv;Yun Zhou;Donglu Zhang;Yadong Jiang

  • Affiliations:

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

  • Venue:
  • Analog Integrated Circuits and Signal Processing
  • Year:
  • 2010

Quantified Score

Hi-index 0.01

Visualization

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.