The Design of Low-power DDS Circuit
Tao Zhang · Electronics & Packaging · 2009
Direct digital frequency synthesizer(DDS)is an apparatus to generate wave on the required frequency.It provides high frequency resolution,rapid frequency transformation and other superiority.DDS has come a long way since the days when implementations were limited to complex,costly designs that consumed large amounts of power.The elements to affect the power of CMOS integrated circuit are summarized in this paper.According to the actual situation of the DDS,The algorithm level and system level improvement is done to reduce the power.A developed Coordinate Rotation Digital Compute(rCORDIC)algorithm and parallel system operation are designed.It has been proved that the power can be reduced about 20 percent by using these improvements.