Title :
Direct digital frequency synthesis using nonlinear digital-to-analog conversion
Author :
Creekmore, J. ; Porter, S. ; Bruce, J.W. ; Blalock, B.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA
Abstract :
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
Keywords :
digital-analogue conversion; direct digital synthesis; low-power electronics; area efficiency; circuit simulation; direct digital frequency synthesis; low power design; nonlinear digital-to-analog conversion; nonlinear reference voltage; sheet resistance; sine output; Band pass filters; Circuit simulation; Circuit synthesis; Digital-analog conversion; Frequency conversion; Frequency synthesizers; Read only memory; Resistors; Table lookup; Voltage;
Conference_Titel :
Circuits and Systems, 2001. MWSCAS 2001. Proceedings of the 44th IEEE 2001 Midwest Symposium on
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-7150-X
DOI :
10.1109/MWSCAS.2001.986332
