Title :
An 8MHz, 72 dB SFDR Asynchronous Sigma-Delta Modulator with 1.5mW power dissipation
Author :
Ouzounov, S. ; Roza, E. ; Hegt, H. ; van der Weide, G. ; van Roermund, A.
Author_Institution :
Eindhoven Univ. of Technol., Netherlands
Abstract :
An Asynchronous Sigma-Delta Modulator (ASDM) that achieves a SFDR of 72 dB with a bandwidth of 8 MHz is presented. The ASDM operates as a closed-loop, nonlinear system. Spectral analysis of the ASDM shows that a center frequency of at least 100 MHz is required for these specifications. Circuit implementations are presented and a prototype ASDM is realized in a digital 0.18 micrometer, 1.8V CMOS technology. The ASDM dissipates 1.5mW and has an area of 0.026mm2.
Keywords :
CMOS integrated circuits; asynchronous circuits; sigma-delta modulation; 0.18 micron; 1.5mW power dissipation; 1.8 V; 72 dB; 72 dB SFDR Asynchronous Sigma-Delta Modulator; 8 MHz; CMOS; bandwidth; circuit implementations; closed-loop; nonlinear system; spectral analysis; Bandwidth; CMOS technology; Circuits; Delta-sigma modulation; Frequency; Nonlinear systems; Power dissipation; Prototypes; Spectral analysis; Variable speed drives;
Conference_Titel :
VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on
Print_ISBN :
0-7803-8287-0
DOI :
10.1109/VLSIC.2004.1346513
