Professional audio gain-control applications for gating, compression, limiting, and downward expansion have been developed using a high-performance digitally controlled audio attenuator IC. This device typically features a 120-dB SNR and 0.0008% THD and can switch attenuation levels without zipper noise, clicks, or pops. Circuit design examples, performance characteristics, and alternative topologies are discussed.

Author: Pirkle, William C.
Affiliation: National Semiconductor Corp., Santa Clara, CA
AES Convention: 98 (February 1995) Paper Number: 3970
Publication Date: February 1, 1995
Subject: Audio Electronics

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