Title :
A 128fs multi-bit ΣΔ CMOS audio DAC with real-time DEM and 115dB SFDR
Author :
van Tuijl, E. ; van den Homberg, J. ; Reefman, D. ; Bastiaansen, Corne
Author_Institution :
Philips, Eindhoven, Netherlands
Abstract :
A continuous-time 5b ΣΔ audio DAC operates at 5.65MS/s (128fs). SFDR of -115dB and noise of -119dB (unweighted) are achieved by realtime DEM that cancels mismatch completely in each sample. Chip area is 2mm2 in a 0.18μm, thick oxide 3.3V CMOS process. Total power consumption is 150mW.
Keywords :
CMOS integrated circuits; audio signal processing; digital-analogue conversion; sigma-delta modulation; signal sampling; 150 mW; 3.3 V; CMOS audio DAC; continuous-time DAC; demand dynamic element matching; mismatch cancellation; oversampling; real-time DEM; sigma-delta audio DAC; Acoustic noise; Clocks; Intersymbol interference; Jitter; Linearity; Noise reduction; Phase change materials; Pulse width modulation; Switches; Timing;
Conference_Titel :
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
Print_ISBN :
0-7803-8267-6
DOI :
10.1109/ISSCC.2004.1332747
