A single loop fourth-order delta-sigma modulator is presented for audio applications. A reconfigurable mechanism is adopted for two bandwidth-based modes （8 kHz/16 kHz）. Manufactured in the SM1C 0.13μm CMOS mixed s...A single loop fourth-order delta-sigma modulator is presented for audio applications. A reconfigurable mechanism is adopted for two bandwidth-based modes （8 kHz/16 kHz）. Manufactured in the SM1C 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.展开更多
基金supported by the National High Technology Research and Development Program of China(No.2008AA0 10702)the National Science & Technology Major Projects,China(No.2009ZX03007-002-02)
文摘A single loop fourth-order delta-sigma modulator is presented for audio applications. A reconfigurable mechanism is adopted for two bandwidth-based modes （8 kHz/16 kHz）. Manufactured in the SM1C 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.
