Title :
An audio ADC delta-sigma modulator with 100 dB SINAD and 102 dB DR using a second-order mismatch-shaping DAC
Author :
Fogleman, Eric ; Welz, Jared ; Galton, Ian
Author_Institution :
California Univ., San Diego, La Jolla, CA, USA
Abstract :
A second-order audio ADC ΔΣ modulator using a low-complexity 33-level second-order mismatch-shaping DAC is presented. The DAC encoder is designed to reduce signal-dependent DAC noise modulation. The prototype was implemented in a 3.3 V 0.5 μm single-poly CMOS process, and it achieves 100 dB SINAD and 102 dB DR
Keywords :
CMOS integrated circuits; Hi-Fi equipment; analogue-digital conversion; delta-sigma modulation; integrated circuit noise; modulators; ΔΣ modulator; 0.5 micron; 3.3 V; audio ADC delta-sigma modulator; low-complexity mismatch-shaping DAC; second-order mismatch-shaping DAC; signal-dependent DAC noise modulation reduction; single-poly CMOS process; CMOS process; Circuit noise; Delta modulation; Logic; Noise reduction; Noise shaping; Prototypes; Signal processing algorithms; Signal to noise ratio; Tree data structures;
Conference_Titel :
Custom Integrated Circuits Conference, 2000. CICC. Proceedings of the IEEE 2000
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5809-0
DOI :
10.1109/CICC.2000.852609
