A 3-V 0.5-/spl mu/m CMOS A/D audio processor for a microphone array

A 0.5-/spl mu/m 3-V CMOS mixed-mode audio processor is presented. It is mainly composed of 11 low-noise input channels and a dedicated digital audio processor. Analog input signals are provided through an 11-microphone array. The chip size is about 50 mm/sup 2/, and the power dissipation is less tha...

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Veröffentlicht in:	IEEE journal of solid-state circuits 1997-07, Vol.32 (7), p.1122-1126
Hauptverfasser:	Balestro, F., Fraisse, V., Martel, G., Morche, D., Senn, P., Le Tourneur, G., Mahieux, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	CMOS process Finite impulse response filter Frequency Microphone arrays Sensor phenomena and characterization Transfer functions
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Beschreibung
Zusammenfassung:	A 0.5-/spl mu/m 3-V CMOS mixed-mode audio processor is presented. It is mainly composed of 11 low-noise input channels and a dedicated digital audio processor. Analog input signals are provided through an 11-microphone array. The chip size is about 50 mm/sup 2/, and the power dissipation is less than 100 mW. This circuit is dedicated to multimedia applications.
ISSN:	0018-9200 1558-173X
DOI:	10.1109/4.597303