A low-power inverter-based ΣΔ analog-to-digital converter for audio applications

被引：0

作者：

Liu XiaoPeng ^{[1
]}

Han Yan ^{[1
]}

Han XiaoXia ^{[1
]}

Luo Hao ^{[1
]}

Cheung, Ray C. C. ^{[2
]}

Cao TianLin ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Microelect & Photoelect, Hangzhou 310027, Zhejiang, Peoples R China

[2] City Univ Hong Kong, Dept Elect Engn, Hong Kong 999077, Hong Kong, Peoples R China

来源：

SCIENCE CHINA-INFORMATION SCIENCES | 2014年 / 57卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Sigma Delta ADC; class-C inverter; low-power; high-resolution; gain-boost; ADC;

D O I：

10.1007/s11432-013-4999-y

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a design for a low-power, high-resolution audio Sigma Delta analog-to-digital converter (ADC) based on a novel gain-boost class-C inverter. The gain-boost class-C inverter behaves as a sub-threshold amplifier, thereby minimizing power dissipation. The proposed ADC chip is fabricated in a SMIC 65-nm CMOS process with a die area of 0.63 mm(2). With 1.2 V of supply voltage, the ADC chip achieves a peak signal-to-noise-plus-distortion-ratio (SNDR) of 92 dB and a dynamic range (DR) of 97 dB over the 20 kHz audio band, consuming only 1.13 mW. These results make the ADC particularly suitable for portable electronics applications.

引用

页码：1 / 10

页数：10

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