首页|期刊导航|半导体学报（英文版）|A fourth-order bandwidth-reconfigurable delta-sigma modulator for audio applications
半导体学报（英文版）2012，Vol.33Issue(7)：74-79,6.DOI:10.1088/1674-4926/33/7/075002
A fourth-order bandwidth-reconfigurable delta-sigma modulator for audio applications
A fourth-order bandwidth-reconfigurable delta-sigma modulator for audio applications
摘要
Abstract
A single loop fourth order delta-sigma modulator is presented for audio applications.A reconfigurable mechanism is adopted for two bandwidth-based modes (8 k Hz/16 kHz).Manufactured in the SMIC 0.13μm CMOS mixed signal process,the chip consumes low power ( 153.6 μW) and occupies a core area of 0.98 × 0.46 mm2.The presented modulator achieves an 89.3 dB SNR and 90.2 dB dynamic range in 16 kHz mode,as well as a 90.2 dB SNR and 86 dB dynamic range in 8 kHz mode.The designed modulator shows a very competitive figure of merit among state-of-the-art low voltage modulators.关键词
delta-sigma modulator/feedforward architecture/reconfiguration/switched capacitor/bootstrapped switchKey words
delta-sigma modulator/feedforward architecture/reconfiguration/switched capacitor/bootstrapped switch引用本文复制引用
Wang Junqian,Yang Haifeng,Wei Rui,Xu Jun,Ren Junyan..A fourth-order bandwidth-reconfigurable delta-sigma modulator for audio applications[J].半导体学报（英文版）,2012,33(7):74-79,6.基金项目
Project supported by the National High Technology Research and Development Program of China (No.2008AA010702) and the National Science & Technology Major Projects,China (No.2009ZX03007-002-02). （No.2008AA010702）
