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DDS39RF10: a good solution or product of signal generator

Bing Zhao
Prodigy 60 points
Part Number: DDS39RF10
Other Parts Discussed in Thread: DAC39RF10, DAC39RF20

Tool/software:

 Hi，

    I want to design a signal generator that can output various pulse signals, such as exponential growth and attenuation signals, Gaussian signals, etc., and requires adjustable parameters such as pulse amplitude, frequency, pulse width, number of pulses, delay object, and delay time. Do you have any good solutions or products? Like DDS ？or DAC ？Looking forward to your reply.

Regards

  • 0
    TI__Expert 3330 points

    The DDS39RF10 can be used in both a "DDS mode" as well as with the JESD204B interface for signals that have some amount of IBW. 

    In DDS mode the DDS39RF10 is only limited to sine waves. The phase, frequency and amplitude can be modulated very quickly, however generating things like pulses, gaussian signals, .etc would not be possible in DDS mode. 

    As for the SERDES, the DDS39RF10 is limited to higher interpolation/lower bandwidth modes as it only has 2 SERDES lanes. This will also limit the IBW of the signal you are trying to synthesize. 

    One could use the DAC39RF10 (with its full 16 SERDES lanes). in a real input mode that would allow it to synthesize any type of signal sent to it over JESD (full Nyquist bandwidth). 

    The new DAC39RF20 is also a potential option, it is still in preview. 

    Regards, 

    Matt