Title :
A 17 bit oversampling D-A conversion technology using multistage noise shaping
Author :
Matsuya, Yasuyuki ; Uchimura, Kuniharu ; Iwata, Atsushi ; Kaneko, Takao
Author_Institution :
NTT LSI Labs., Kanagawa, Japan
fDate :
8/1/1989 12:00:00 AM
Abstract :
A description is given of a highly stable, triple-integration two-stage noise-shaping technique and a precise differential pulse-width modulation (PWM) output method which permits greater accuracy in monolithic audio digital-to-analog (D-to-A) converters (DACs) without trimming. Based on these techniques and using 1.5 μm CMOS technology, a 17 bit 20 kHz bandwidth DAC LSI chip with digital filters was developed. A signal-to-noise ratio (S/(N+THD)) of 101 dB and a total harmonic distortion (THD) of 0.0007% at full-scale input were obtained
Keywords :
CMOS integrated circuits; audio equipment; digital-analogue conversion; large scale integration; pulse width modulation; 1.5 micron; 20 kHz; CMOS technology; LSI chip; audio; differential pulse-width modulation; digital filters; full-scale input; multistage noise shaping; oversampling D-A conversion technology; signal-to-noise ratio; total harmonic distortion; triple-integration two-stage noise-shaping technique; Bandwidth; CMOS technology; Digital filters; Digital modulation; Large scale integration; Noise shaping; Pulse width modulation; Pulse width modulation converters; Signal to noise ratio; Total harmonic distortion;
Journal_Title :
Solid-State Circuits, IEEE Journal of
