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DDS performance at low frequencies

Question asked by xavo89 on Apr 3, 2014
Latest reply on Apr 3, 2014 by xavo89

Dear all,

 

We are interested in using a DDS to generate a sine waveform to carry out impedance measurements, which are to be made in the range 10 kHz to 1 MHz and, if possible, to use a 2-channel DDS. However, all the DDS of analog devices I have seen so far (such as AD9854), are intended for RF range. Besides, all the facts in the datasheet show its performance above several MHz so I am not sure whether this chips would be able to generate adequate LF (0.01-1 MHz) sines.  Has anybody tried to make them work in that frequency range? If not, can anybody suggest me a DDS?

 

Thank you all in advance!

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