A transconductance-enhancement cascode Miller compensation for low-power multistage amplifiers

被引：20
|
作者：
Dong, Siwan [1 ]
Zhu, Zhangming [2 ]
机构：
[1] Xian Univ Posts & Telecommun, Sch Elect Engn, Xian, Shaanxi, Peoples R China
[2] Xidian Univ, Sch Microelect, Xian, Peoples R China
来源：
MICROELECTRONICS JOURNAL | 2018年 / 73卷
基金：
中国国家自然科学基金;
关键词：
Multistage amplifiers; Transconductance enhancement; Frequency compensation; Very large capacitive load; Three-stage amplifier; 3-STAGE AMPLIFIER;
D O I：
10.1016/j.mejo.2018.01.009
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 transconductance-enhancement cascode Miller compensation technique is proposed for low supply-power, large or very large capacitive load multistage amplifiers. By using the transconductance-enhancement operational amplifiers and the local impedance attenuation network, both the gain bandwidth and setting time are thus significantly improved. The effectiveness of the method has been verified in a 0.18 mu m CMOS process, the proposed three-stage amplifier has over 100 dB gain, 6.5 MHz gain-bandwidth product, and 0.83 V/mu s slew rate while consuming 23 mu W power from a 1.2 V supply while driving a 560 pF load.
引用
收藏
页码：94 / 100
页数：7
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