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Direct digital frequency synthesis using nonlinear digital-to-analog conversion

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4 Author(s)
Creekmore, J. ; Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA ; Porter, S. ; Bruce, J.W. ; Blalock, B.J.

A design technique that uses nonlinear D/A conversion for low power, area efficient sine output direct digital frequency synthesis (DDFS) is presented. Nonlinear reference voltages are created geometrically and replace the large, power hungry ROM in conventional DDFS circuits. The proposed design is independent of sheet resistance. Finally, design equations and simulations are presented

Published in:

Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on  (Volume:2 )

Date of Conference:

2001

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