• AD9833: Difference between AD9833 and AD9834

    I want to use one of these two DDS chips (AD9833/AD9834) to generate a square
    wave signal of 10...90kHz from a 7.2Mhz clock. All I need is a square wave
    output. I therefore don't need the DAC running but intend to use the MSB output
  • AD9833

    我现在选用AD9833来产生30-100KHZ的TTL方波,但AD9833只能输出正弦波和三角波,且最大幅值为0.65V.  我电路后级接了比较器,但是比较器不能输出波形,(AD9833波形正常),是不是AD9833波形太弱了需要先放大再进比较器呢??谢谢,盼解答

  • AD9833


    I am trying to use an AD9833 to generate a square wave. I am very new to electronics, and am having trouble understanding the MCLK pin. What hardware do I need to feed this pin? Will an NE555 do the trick?

    Thanks for any help!

  • AD9833

    I have some problem with AD9833.

    My MCU is DsPIC30F4011

    I send SPI data ex.


    void AD9833setFreq(long freq )
    long FreqWord = (freq << 28) / 25000000L ;
    int MSB = (int)((FreqWord & 0xFFFC000) >> 14);
    int LSB …

  • AD9833


    I am using AD9833 to generate a 134kHz square wave. MCLK=11.0092MHz. The output square wave does not have uniform period. Eight pulses have the same period and then the next one has slightly longer period. Later, I found out the difference is one…

  • AD9833


    I would like to ask a question about AD9833.

    ANALOG DEVICES recommends that VDD pin should be connected 0.1uF and 10uF decoupling capacitors

    and CAP pin should be connected 0.1uF decoupling capasitor in datasheet Page.6.

    However VDD pin is…

  • AD9833 Synchonising

    Hi All,

    I am a newbie to the forum and fairly novice when it comes to coding & circuit design too.

    I'm having an issue with a simple function generator project, in which I am using 2x AD9833 DDS ICs; one for a square-wave trigger/sync signal and…

  • AD9833 Issues

    Hello people.

    I am currently working on a function generator supplied and controlled by USB. I have lots of problems with que quality of the signal. I already made a double sided board just with the DDS and its MCLK reference but i dont know if the layout…

  • Problem output AD9833

    Good Morning
    a few days ago I asked a question if it would be possible to generate two sine signals in quadrature with two AD9833. Well, I did it. But I have a problem with the output signal from AD9833. The signal does not come out with many problems…
  • AD9833: Sine generator

    What is the precison can I except on temperature range: the output is 0.65V max
    +/- ???
    Do you confirm that the rejection of 2nd harmonic is 65 dB.


    The frequency precision of any DDS system is as good
    as its reference frequency.…