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Convention Paper

A Digitally Controlled Audio Attenuator

Authors: Lee, Damon

AES Convention 97 · Paper 3929 · November 1994

Abstract

A new BiCMOS audio attenuator controlled by a 16-bit three-wire serial interface, achieves a dynamic range of 120 dB and a total harmonic distortion (THD) of 0.0008%. The circuit uses a resistor ladder structure to create a 76-dB attenuation range and a 104-dB mute level. Various techniques are applied to achieve noiseless attenuation changes and to minimize distortion sources.

Details

Published in
AES Convention 97
AES Convention
97
Paper number
3929
Publication date
November 6, 1994
Session subject
Analog Signal Processing
Affiliation
National Semiconductor, Santa Clara, CA (See document for exact affiliation information.)
Type
Convention Paper