A Compensation Technique for Two-Stage Differential OTAs

被引：28

作者：

Abdulaziz, Mohammed ^{[1
]}

Tormanen, Markus ^{[1
]}

Sjoland, Henrik ^{[1
]}

机构：

[1] Lund Univ, Dept Elect & Informat Technol, SE-22100 Lund, Sweden

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2014年 / 61卷 / 08期

关键词：

Active filter; CMOS technology; low-pass filter; low-power electronics; operational amplifier; radio frequency receivers; AMPLIFIER; CASCODE; FILTER;

D O I：

10.1109/TCSII.2014.2327475

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 brief, a frequency compensation method for operational transconductance amplifiers is proposed, which poses no power overhead compared to Miller compensation, while improving the 3-dB bandwidth, the unity gain frequency, and the slew rate. The technique employees positive feedback to introduce an extra left half plane zero to cancel a pole. The phase margin shows good robustness against process and temperature variations. The proposed technique poses no design constraints on the transconductance or capacitor values, which makes it attractive for low-power applications with low area overhead.

引用

页码：594 / 598

页数：5

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