FSK modulator using CD4046 plz help!

Discussion in 'The Projects Forum' started by Sheryl, Nov 28, 2007.

  1. Sheryl

    Thread Starter New Member

    Nov 28, 2007
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  2. Ron H

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    Apr 14, 2005
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    You need to post a schematic of what you have, but be aware that the free-running frequency (no PLL loop) will have to somehow be tuned to the center frequency.
     
  3. Sheryl

    Thread Starter New Member

    Nov 28, 2007
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  4. Ron H

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    Apr 14, 2005
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    Sheryl, maybe you haven't seen the TI CD4046 datasheet. It clearly says that the VCO requires one or two resistors.
     
  5. reza63_kavir

    New Member

    Jun 14, 2008
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    i design it
     
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