DocumentCode
1679803
Title
Delta-Sigma Modulation in Direct Digital Frequency Synthesis
Author
Yang, Dayu ; Ni, Weining ; Dai, Foster F. ; Shi, Yin ; Jaeger, Richard C.
Author_Institution
Dept. of Electr. & Comput. Eng., Auburn Univ., AL
fYear
2006
Firstpage
523
Lastpage
526
Abstract
This paper presents comparisons of various DeltaSigma modulations in direct digital frequency synthesis. DeltaSigma modulators such as MASH, feedforward, feedback and error feedback have been implemented in both phase and frequency domains in a CMOS DDS. The DDS prototype is fabricated in a 0.35mum CMOS technology with core area of 1.7times2.1 mm and total 75 mA current. Measured DDS output demonstrates that frequency domain DeltaSigma modulation achieves better SFDR and SINAD than phase domain AE modulation
Keywords
CMOS digital integrated circuits; circuit feedback; delta-sigma modulation; direct digital synthesis; feedforward; CMOS technology; SFDR; SINAD; delta-sigma modulation; direct digital frequency synthesis; error feedback; CMOS technology; Delta modulation; Delta-sigma modulation; Digital modulation; Feedback; Frequency domain analysis; Frequency synthesizers; Multi-stage noise shaping; Phase modulation; Prototypes; DAC; DDS; frequency synthesis; ¿¿ modulation;
fLanguage
English
Publisher
ieee
Conference_Titel
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location
San Jose, CA
Print_ISBN
1-4244-0075-9
Electronic_ISBN
1-4244-0076-7
Type
conf
DOI
10.1109/CICC.2006.320905
Filename
4115014
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