A 1.2V 68µW 98.2DB-DR Audio Continuous-Time Delta-Sigma Modulator

Changwook Lee,Moon Hyung Jang,Youngcheol Chae

2018 IEEE Symposium on VLSI Circuits（2018）

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摘要

This paper presents a micro-power audio continuous-time delta-sigma modulator. Fabricated in a 65nm CMOS process, the modulator occupies 0.14mm ² and achieves 98.2dB DR, 94.1dB SNDR and 107dB SFDR in a 24kHz BW while consuming only 68μW from a 1.2V supply. This results in a Schreier FoM of 183.6 dB, the highest energy-efficiency for audio ADCs published to date.

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关键词

98.2DB-DR audio continuous-time delta-sigma modulator,micropower audio continuous-time delta-sigma modulator,CMOS,SFDR,SNDR,power 68.0 muW,voltage 1.2 V,size 65.0 nm,frequency 24.0 kHz

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