直接数字频率合成使用非线性数模转换

Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257) Pub Date : 2001-08-14 DOI:10.1109/MWSCAS.2001.986332

J. Creekmore, S. Porter, J. Bruce, B. Blalock

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引用次数: 2

摘要

提出了一种利用非线性数模转换实现低功耗、高效率正弦输出直接数字频率合成(DDFS)的设计方法。非线性参考电压以几何方式产生，取代传统DDFS电路中大而耗电的ROM。所提出的设计与板材阻力无关。最后给出了设计方程和仿真。

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

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.

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Proceedings of the 44th IEEE 2001 Midwest Symposium on Circuits and Systems. MWSCAS 2001 (Cat. No.01CH37257)

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