CLASS-AB LARGE-SWING CMOS BUFFER AMPLIFIER WITH CONTROLLED BIAS CURRENT

被引:18
|
作者
KIH, JS [1 ]
CHANG, BS [1 ]
JEONG, DK [1 ]
KIM, WC [1 ]
机构
[1] SEOUL NATL UNIV,DEPT ELECTR ENGN,SHINLIM DONG,KWANAK GU,SEOUL 151742,SOUTH KOREA
关键词
D O I
10.1109/4.262009
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A class-AB large swing CMOS buffer amplifier with new error amplifier circuits is presented. The error amplifier accurately controls the quiescent current through the output transistors, thereby reducing the variation of the quiescent power dissipation due to process and temperature variations. The buffer amplifier fabricated using 1.2-mum CMOS technology occupies an area of 103 mil2 and dissipates an average of 4.7 mW under the quiescent condition with the standard deviation of only 3.2% of the average value. It has -63.6 dB THD with 3.5 V(pp) output swing into a 300 OMEGA/150 pF load at 5 kHz.
引用
收藏
页码:1350 / 1353
页数:4
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