BPSK modulator via AVR and DAC

Discussion in 'The Projects Forum' started by eric_s88, Apr 4, 2012.

  1. eric_s88

    Thread Starter Member

    Apr 20, 2011
    157
    1
    Hi everyone!

    I have to design a BPSK modulator via AVR and DAC..


    the function must be like this : when PB0 is at "Low" level we must have a Sinusoidal wave with 0 degree phase at the output of DAC

    when PB0 is at "High" level we must have a Sinusoidal wave with 180 degree phase at the output of DAC..

    I've decided to use DAC0800 as my digital to analog converter. and I know how to use an avr chip and program it in C language.

    but I want to know the algorithm and how to use DAC0800..
    the datasheet of DAC0800
    http://eedept.ncue.edu.tw/study/labs/semilab/Experiment_Data/Experiment_data_sheet/DAC0800.pdf

    can anybody help ?
     
  2. eric_s88

    Thread Starter Member

    Apr 20, 2011
    157
    1
    there isn't any idea??? :(
     
  3. eric_s88

    Thread Starter Member

    Apr 20, 2011
    157
    1
    ????????? :(
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,348
    Hello,

    You are saying that you want to switch the phase of a signal with an output of the AVR.
    How do you want to generate the signal itself?

    Bertus
     
  5. eric_s88

    Thread Starter Member

    Apr 20, 2011
    157
    1
    Hello

    I want to generate the signal via DAC0800 . look at the device datasheet at the first post.. I cant understand it :(
     
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