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Whats the difference between DDFS and NCO?

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Usman Hai

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DDFS

Whats the difference bw DDFS and NCO.

USMAN HAI
PAKISTAN
 

Re: DDFS

Hi,


NCO : Is a dgital technique of generating required frequency it basically uses a counter and provides rectangular waveform output.

DDFS : is a DSP technique. It may use the NCO, other digital techniques to create modify, .... and finally uses a DAC to conver it to analog form.

Hope this is useful.
BRMadhukar
 

Re: DDFS

DDFS: Direct Digital Frequency Synthesis
it use a high frequency (fs) clock source to generated low frequency anyshape waveform. The frequency of generated waveform should not exceed 1/20 to get a low harmonic output after DAC.
 

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