Loop Stability Compensation Technique for Continuous-Time Common-Mode Feedback Circuits

被引:0
|
作者
Cho, Young-Kyun [1 ]
Park, Bong Hyuk [1 ]
机构
[1] Elect & Telecommun Res Inst, Mobile RF Res Sect, Adv Mobile Commun Res Dept, Daejeon, South Korea
关键词
common-mode feedback; loop stability compensation; continuous-time system; Miller compensation;
D O I
暂无
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
A loop stability compensation technique for continuous-time common-mode feedback (CMFB) circuits is presented. A Miller capacitor and nulling resistor in the compensation network provide a reliable and stable operation of the fully-differential operational amplifier without any performance degradation. The amplifier is designed in a 130 nm CMOS technology, achieves simulated performance of 57 dB open loop DC gain, 1.3-GHz unity-gain frequency and 65 degrees phase margin. Also, the loop gain, bandwidth and phase margin of the CMFB are 51 dB, 27 MHz, and 76 degrees, respectively.
引用
收藏
页码:241 / 242
页数:2
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