Analysis and Design of High-Energy-Efficiency Amplifiers for Delta-Sigma Modulators

被引：0

作者：

Lai, Jinze ^{[1
]}

Lin, Yuxuan ^{[1
]}

Zhao, Gumeng ^{[1
]}

Huang, Lijie ^{[1
]}

Wei, Cong ^{[1
]}

Wei, Rongshan ^{[1
]}

Hu, Wei ^{[1
]}

机构：

[1] Fuzhou Univ, Coll Phys & Informat Engn, Fuzhou, Peoples R China

来源：

ACTIVE AND PASSIVE ELECTRONIC COMPONENTS | 2023年 / 2023卷

基金：

中国国家自然科学基金;

关键词：

LOW-POWER; SAR ADC; VOLTAGE;

D O I：

10.1155/2023/2265990

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：

This study presents a dynamic amplifier with high energy efficiency and high gain suitable for a delta-sigma modulator based on the floating-inverter amplifier (FIA), in-depth analysis of the existing FIA and its improved structure, and simulation verification. Compared with other FIA structures, the proposed amplifier has a better compromise in terms of power consumption and stability, which was designed and simulated using the SMIC 180 nm CMOS technology. Under a 1.2 V power supply, the closed-loop direct current (DC) gain and the output swing were about 104 dB and +/- 380 mV, respectively, and the input-referred in-band noise was about -100 dB with the chopper circuit.

引用

页数：13

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