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Waveform generator

Discussion in 'Electronic Design' started by [email protected], Feb 21, 2005.

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  1. Guest

    Hi all, I need an integrated waveform generator such as MAX038 from
    Maxim, but with a wider band (almost two times, or more, wider). Does
    anyone know a chip that works like this? Thanks.
    Daniele.
     
  2. Leon Heller

    Leon Heller Guest

    Not a single chip solution, but you can do it with a software DDS running on
    a microcontroller, up to 200 kHz or so. I've got an example on my web site.
    With a 20 MHz ATtiny2313 it should go up to over 400 kHz.

    Leon
     
  3. Luhan Monat

    Luhan Monat Guest

    Hi,

    Do you specifically need sine waves - or will square waves do?
     
  4. Marco

    Marco Guest

    Hi, thanks for your reply.
    I need a sine wave up to 40 or 50 MHz. MAX038 maaximum frequency is 20 MHz.
     
  5. Leon Heller

    Leon Heller Guest

    Look at the AD9850 etc. from Analog Devices.


    Leon
     
  6. Marco

    Marco Guest

    I never used a DDS, I know that it's the best way, but I'm looking for
    something else. If you tell me that it's simple, then I'll try. Wher
    can I find a good tutorial for programming a DDS in order to obtain a
    sinewave in a large frequency bandwidth (e.g. 1-100 MHz)? And, above
    all, how much will I spend for a DDS?
     
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