Title :
A 1.5 V 1.0 mW audio ΔΣ modulator with 98 dB dynamic range
Author :
Coban, Abdulkerim L. ; Allen, Phillip E.
Abstract :
This audio-quality switched-capacitor (SC) ΔΣ modulator operates from a single 1.5 V supply and dissipates 1.0 mW. When clocked at 2.82 MHz, it achieves 98.2 dB dynamic range (DR) in a 20 kHz bandwidth. The peak SNR and SNDR are 90 dB and 88 dB, respectively. The fully-differential experimental circuit has been integrated in a 0.5 μm triple-metal single-poly CMOS n-well process with metal-to-poly capacitors.
Keywords :
CMOS integrated circuits; audio coding; sigma-delta modulation; switched capacitor networks; 0.5 micron; 1.0 mW; 1.5 V; 2.82 MHz; 20 kHz; audio ΔΣ modulator; audio-quality switched-capacitor circuit; dynamic range; fully-differential circuit; metal-to-poly capacitors; peak SNDR; peak SNR; triple-metal single-poly CMOS n-well process; Capacitors; Circuits; Clocks; Delta modulation; Dynamic range; Feedback loop; Operational amplifiers; Power dissipation; Sampling methods; Switches;
Conference_Titel :
Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-5126-6
DOI :
10.1109/ISSCC.1999.759091
