Title :
A CMOS digitally controlled audio attenuator for Hi-Fi systems
Author :
Hynes, Michael J. ; Burton, D. Philip
Abstract :
Describes an audio attenuator designed for use in digitally controlled Hi-Fi systems. The circuit is fabricated with a thin film on CMOS process and has a dynamic range of 0 to -88.5 dB in 1.5 dB steps. Total harmonic distortion for the complete circuit is typically -87 dB and wide-band signal/noise ratio is typically -86 dB.
Keywords :
Attenuators; Audio equipment; Field effect integrated circuits; attenuators; audio equipment; field effect integrated circuits; Attenuators; CMOS process; Circuit noise; Control systems; Digital control; Dynamic range; Signal to noise ratio; Thin film circuits; Total harmonic distortion; Wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1981.1051529
