A 5-V single-chip delta-sigma audio A/D converter with 111 dB dynamic range

A 5-V 24-b audio delta-sigma A/D converter has been developed. The single chip integrates stereo delta-sigma modulators, a voltage reference, and a decimation filter. A fourth-order cascaded delta-sigma modulator using a local feedback technique was employed to avoid overload without sacrifice in no...

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Veröffentlicht in:	IEEE journal of solid-state circuits 1997-03, Vol.32 (3), p.329-336
Hauptverfasser:	Fujimori, I., Koyama, K., Trager, D., Tam, F., Longo, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Delta modulation Digital filters Distortion measurement Dynamic range Feedback Finite impulse response filter MOS devices Noise reduction Semiconductor device measurement Voltage
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container_end_page	336
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container_title	IEEE journal of solid-state circuits
container_volume	32
creator	Fujimori, I. Koyama, K. Trager, D. Tam, F. Longo, L.
description	A 5-V 24-b audio delta-sigma A/D converter has been developed. The single chip integrates stereo delta-sigma modulators, a voltage reference, and a decimation filter. A fourth-order cascaded delta-sigma modulator using a local feedback technique was employed to avoid overload without sacrifice in noise performance. A two-stage decimation filter architecture which reduces digital noise was developed. A new multistage comb filter was used for the first-stage, and a bit-serial finite impulse response (FIR) filter was used for the second stage. The 25.8 mm/sup 2/ chip was fabricated in 0.7-/spl mu/m CMOS with low threshold MOS devices. Measured results show 111 dB dynamic range and 103 dB peak signal-to-(noise plus distortion)S/(N+D).
doi_str_mv	10.1109/4.557630
format	Article
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The single chip integrates stereo delta-sigma modulators, a voltage reference, and a decimation filter. A fourth-order cascaded delta-sigma modulator using a local feedback technique was employed to avoid overload without sacrifice in noise performance. A two-stage decimation filter architecture which reduces digital noise was developed. A new multistage comb filter was used for the first-stage, and a bit-serial finite impulse response (FIR) filter was used for the second stage. The 25.8 mm/sup 2/ chip was fabricated in 0.7-/spl mu/m CMOS with low threshold MOS devices. Measured results show 111 dB dynamic range and 103 dB peak signal-to-(noise plus distortion)S/(N+D).</abstract><pub>IEEE</pub><doi>10.1109/4.557630</doi><tpages>8</tpages></addata></record>
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subjects	Delta modulation Digital filters Distortion measurement Dynamic range Feedback Finite impulse response filter MOS devices Noise reduction Semiconductor device measurement Voltage
title	A 5-V single-chip delta-sigma audio A/D converter with 111 dB dynamic range
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