Title :
A 0.6V 82dB ΔΣ audio ADC using switched-RC integrators
Author :
Ahn, Gil-Cho ; Chang, Dong-Young ; Brown, Matthew ; Ozaki, Naoto ; Youra, Hiroshi ; Yamamura, Ken ; Hamashita, Koichi ; Takasuka, Kaoru ; Temes, Gabor C. ; Moon, Un-Ku
Author_Institution :
Oregon State Univ., Corvallis, OR, USA
Abstract :
A 2-2 MASH ADC consumes 1mW from a 0.6V supply. It utilizes a local feedback loop for large input range, and switched-RC integrators to achieve high linearity without clock boosting or bootstrapping. The prototype IC is fabricated in a 0.35μm CMOS process. It provides 82dB DR over the A-weighted audio band, and 103dB SFDR at -3dBFS input.
Keywords :
CMOS integrated circuits; RC circuits; analogue-digital conversion; audio signal processing; circuit feedback; delta-sigma modulation; integrating circuits; switched capacitor networks; ΔΣ audio ADC; 0.35 micron; 0.6 V; 1 mW; 2-2 MASH ADC; A-weighted audio band; CMOS process; local feedback loop; switched-RC integrators; Capacitors; Feedback; Low voltage; Multi-stage noise shaping; Power dissipation; Rail to rail amplifiers; Resistors; Sampling methods; Switches; Switching circuits;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493921
