A Low Noise Class-AB Operational Amplifier with Noise Optimization Technique

被引：0
|
作者：
Song, Seungheun [1 ]
Jung, Kwanseok [1 ]
Kim, Subin [1 ]
Choi, Joongho [1 ]
机构：
[1] Univ Seoul, Dept Elect & Comp Engn, Seoul, South Korea
来源：
2014 INTERNATIONAL SOC DESIGN CONFERENCE (ISOCC) | 2014年
关键词：
operational amplifier; class-ab amplifier; input referred noise; low noise technique;
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：
This paper presents a low noise operational amplifier with noise optimization and reduction techniques. It consists of a folded-cascode amplifier and a class-AB output stage with a simple minimum selector. The input-referred noise of an input transistor can be optimized through utilization of the relationship between input parasitic capacitance and flicker noise. The other main noise sources in a folded-cascode amplifier are reduced by increasing the size, adding resistors or by stacking FETs at the cascade biasing circuitry. The proposed amplifier is implemented in a 0.18-mu m CMOS process.
引用
收藏
页码：96 / 97
页数：2
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