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CDCE925: Clock Generator With SSC Support for EMI Reduction About

Faruk Sözüer
Intellectual 600 points
Part Number: CDCE925

Hello;

CDCE925 Flexible Low Power LVCMOS Clock Generator I want to make 100Mhz wave generator using EMI Reduction with SSC Support. I need to produce square wave, triangle wave and sine signals. Can I increase the frequency of the signal if I input the signal outputs of the AD5932 to the VCO input of the CDCE925? So does the CDCE925 IC accept all three types of signals as inputs? 

Sincelery

  • 0
    TI__Guru* 97780 points

    Hi Faruk,

    I do not quite understand your question.

    CDCE925 is a CMOS clock generator with SSC. Its output is a square wave clock, it cannot be sine wave or triangle wave.

    The SSC generator is built-in, you can enable it, we support both down spread and center spread, with different configurable degree of modulation depth. SSC modulation shape is triangular.

    The internal VCO is not accessible. However, you can use a SSC modulated clock as the reference clock to CDCE925. 

  • 0 in reply to Noel Fung
    Intellectual 600 points

    Hello Fung;

    The sinus and triangle applied to the input cannot amplify a signal, then? What we actually want to do is raise a frequency of 25Mhz or less. But this signal can be square wave, triangle or sinus. Is there a product range you can recommend?

    Sincelery

  • 0 in reply to Faruk Sözüer
    TI__Guru* 97780 points

    Hi Faruk,

    Did you mean you want a product that can generate 25MHz signal in sine wave, square wave or triangular wave format?

    Maybe a DAC can do so. Please check this out in Data Converters forum. 

  • 0 in reply to Noel Fung
    Intellectual 600 points

    Hello Fung;

    Actually I need 100Mhz, not 25Mhz. There are ICs that directly produce 25Mhz. I need to increase the 25Mhz frequency to 100Mhz(sine wave,triangle wave,square wave).
    Sincelery
  • 0 in reply to Faruk Sözüer
    TI__Guru* 97780 points

    Hi Faruk,

    Please check with the Data Converter group for a suitable DAC, my product line does not have parts capable of generating signal in sine, triangle and square wave.