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Multi-Channel High Performacne Analog Volume Control with a New Serial I²C/SPI Compatible Control Port

A new scheme for digitally operating an 8 channel high performance analog volume control is proposed. Along with being I_{2C/SPI compatible, this scheme is faster and less complex than existing solutions due to its inherent advanced support for group/individual addressing. The volume control varies monotonically all the way from -96 dB to +22 dB in 0.25 dB steps. The chip achieves 110 dB THD+N, 1.8 µVrms total integrated noise and an interchannel isolation of greater than 120 dB between power supplies of ±5 V as well as ±9 V.}

Authors: Gaboriau, Johann; Hardy, Chad; Saraf, Vivek; Tucker, John
Affiliation: Cirrus Logic
AES Convention:120 (May 2006) Paper Number:6847 Import into BibTeX
Subject:Audio Recording and Reproduction

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