DocumentCode
1177992
Title
A direct digital synthesizer with 100-MHz output capability
Author
Saul, P.H. ; Mudd, M.S.J.
Author_Institution
Allen Clark Res. Centre, Plessey Res. Caswell Ltd., Towcester, UK
Volume
23
Issue
3
fYear
1988
fDate
6/1/1988 12:00:00 AM
Firstpage
819
Lastpage
821
Abstract
A bipolar direct digital synthesizer with 5-kHz to 100-MHz output capability is described. Channel spacing is 5 kHz with a ´hop´ time between discrete output frequencies of less than 17 ns. Spurious output rejection is better than -32 dBc, and close-to-carrier measurements indicate a noise floor lower than -138 dBc at +or-25 kHz.<>
Keywords
bipolar integrated circuits; digital integrated circuits; digital-analogue conversion; frequency synthesizers; 5 kHz to 100 MHz; DAC; ROM lookup table; bipolar IC; direct digital synthesizer; Channel spacing; Circuit noise; Clocks; Data conversion; Frequency; Noise measurement; Phase locked loops; Phase noise; Read only memory; Synthesizers;
fLanguage
English
Journal_Title
Solid-State Circuits, IEEE Journal of
Publisher
ieee
ISSN
0018-9200
Type
jour
DOI
10.1109/4.323
Filename
323
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