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

被引：0

作者：

LIU XiaoPeng ^{[1
]}

HAN Yan ^{[1
]}

HAN XiaoXia ^{[1
]}

LUO Hao ^{[1
]}

Ray C C CHEUNG ^{[2
]}

CAO TianLin ^{[1
]}

机构：

[1] Institute of Microelectronics & Photoelectronics, Zhejiang University

[2] Department of Electronic Engineering, City University of Hong Kong

来源：

ScienceChina(InformationSciences) | 2014年 / 57卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Σ△; ADC; class-C inverter; low-power; high-resolution; gain-boost;

D O I：

暂无

中图分类号：

TN792 [];

学科分类号：

080902 ;

摘要：

This paper presents a design for a low-power,high-resolution audio Σ△ 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 mm2.With 1.2 V of supply voltage,the ADC chip achieves a peak signal-tonoise-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：218 / 227

页数：10