Title :
A low-power stereo 16-bit CMOS D/A converter for digital audio
Author :
Schouwenaars, Hans J. ; Groeneveld, D. Wouter J ; Termeer, Henk A H
Author_Institution :
Philips Res. Labs., Eindhoven, Netherlands
fDate :
12/1/1988 12:00:00 AM
Abstract :
A low-power 16-bit CMOS D/A (digital/analog) converter for portable digital audio is described. The converter is based on current division. To guarantee monotonicity and a good small-signal reproduction, a dynamic segmentation technique is used. A geometric averaging technique is used to minimize the harmonic distortion of the converter at high signal levels. The dynamic range is 95 dB. The circuit operates in a time-multiplex mode at a sample frequency of 44 kHz in a power supply range of 2.5-5 V and has a power consumption of 15 mW. A 2-μm CMOS technology is used and the active chip area is 5 mm2
Keywords :
CMOS integrated circuits; Hi-Fi equipment; digital-analogue conversion; signal processing equipment; 15 mW; 16 bit; 2 micron; 2.5 to 5 V; 44 kHz; CMOS D/A converter; Hi-Fi equipment; current division; dynamic segmentation; geometric averaging; harmonic distortion; low-power stereo; portable digital audio; small-signal reproduction; time-multiplex mode; CMOS technology; Circuits; Dynamic range; Energy consumption; Frequency; Harmonic distortion; Low voltage; Power dissipation; Power supplies; Switches;
Journal_Title :
Solid-State Circuits, IEEE Journal of
