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Convention Paper

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

Authors: Gaboriau, Johann; Hardy, Chad; Saraf, Vivek; Tucker, John

AES Convention 120 · Paper 6847 · May 2006

Abstract

A new scheme for digitally operating an 8 channel high performance analog volume control is proposed. Along with being I2C/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.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6847
Publication date
May 6, 2006
Session subject
Audio Recording and Reproduction
Affiliation
Cirrus Logic (See document for exact affiliation information.)
Type
Convention Paper