Title :
A 113 dB SNR oversampling sigma-delta DAC for CD/DVD application
Author :
Nguyen, Khiem ; Adams, Robert ; Sweetland, Karl
Author_Institution :
Analog Devices Inc., Wilmington, MA, USA
fDate :
8/1/1998 12:00:00 AM
Abstract :
A sigma-delta (ΣΔ) audio digital-to-analog converter (DAC) for CD and digital versatile disk (DVD) application is presented. The converter uses a 6-bit modulator and a segmented noise-shaped scrambling technique to achieve a 113 dB dynamic-range over a 20 kHz bandwidth. A continuous-time output stage is used to achieve a high signal-to-noise (SNR) in a small die area. This output stage employs a dual return-to-zero scheme to eliminate errors caused by inter-symbol interference (ISI). The converter is fabricated in a 0.6 μm double-poly double-metal CMOS process. The chip occupies 3.1×3.2 squared mm and operates from a single 5 V supply
Keywords :
CMOS digital integrated circuits; Hi-Fi equipment; audio discs; digital-analogue conversion; integrated circuit noise; intersymbol interference; modulators; sigma-delta modulation; signal sampling; 0.6 micron; 113 dB; 20 kHz; 5 V; 6 bit; CD; CD/DVD application; ISI; SNR; audio digital-to-analog converter; bandwidth; clock jitter sensitivity; continuous-time output stage; digital versatile disk; double-poly double-metal CMOS process; dual return-to-zero scheme; dynamic-range; high signal-to-noise; inter-symbol interference; modulator; out-of-band noise; oversampling sigma-delta DAC; segmented noise-shaped scrambling; Capacitors; Circuit noise; Clocks; DVD; Delta-sigma modulation; Digital filters; Digital modulation; Interpolation; Jitter; Noise reduction;
Journal_Title :
Consumer Electronics, IEEE Transactions on
