Design of Three-Stage Class-AB 16 Ω Headphone Driver Capable of Handling Wide Range of Load Capacitance

被引：40
作者：
Dhanasekaran, Vijay
Silva-Martinez, Jose [1 ]
Sanchez-Sinencio, Edgar [1 ]
机构：
[1] Texas A&M Univ, Dept Elect & Comp Engn, Analog & Mixed Signal Ctr, College Stn, TX 77843 USA
来源：
IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2009年 / 44卷 / 06期
关键词：
Class-AB amplifiers; class-AB drivers; audio power amplifiers; headphone drivers; multi-stage amplifiers; capacitive loaded amplifiers; POWER MULTISTAGE AMPLIFIERS; FREQUENCY-COMPENSATION; OPERATIONAL-AMPLIFIER; CMOS;
D O I：
10.1109/JSSC.2009.2020461
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：
In this paper, the effect of load capacitance variation on the location of the closed loop poles of three-stage amplifiers is analyzed and a frequency compensation scheme that automatically adjusts the damping factor according to the load capacitance is proposed. A class-AB 16 Omega headphone driver designed using the proposed scheme in 0.13 mu m technology can handle 1 pF to 22 nF capacitive load while consuming as low as 1.2 mW of quiescent power. It can deliver a peak power of 40 mW (1.6 Vpp swing) to the load with -84.8 dB THD and 92 dB peak SNR. It occupies 0.1 mm(2) area.
引用
收藏
页码：1734 / 1744
页数：11
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