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Waveform generator using MSP432

user5100092
Prodigy 20 points
Other Parts Discussed in Thread: DAC5687

Please help me design an analog front end for the waveform in the image below. The frequency is 200kHz. I should be able to change the phase of the waveform using the digital output from the mcu.

  • 0
    TI__Expert 8510 points

    The analog circuitry for this is somewhat out of the scope of this forum.  Since the diagram above referenes BPSK, I would first start with the digital-side implementation using the BPSK app note here.

    I'll have a look at the TI parts & application note collections to see if there's anything that would help you in your design.

    Regards,

      Bob Landers

  • 0 in reply to Bob Landers
    Prodigy 20 points

    Any advice or clue on how I can generate the waveform will be helpful. I have reattached the drawing with the missing data. The BPSK in that application note uses a sine wave carrier. The data I got doesn't have any carrier wave, just 3 voltage levels. Is there a way I can jump between the voltage levels quickly enough to generate the desired waveform.

  • 0 in reply to user5100092
    TI__Expert 8510 points

    I found a similiar E2E post that may provide some further information on generating BPSK waveforms.

    Please see this post , which uses a DAC5687 that is capable of outputting a signal in the range you specify.

    That should provide enough information for you to build a circuit to generate the BPSK output.

    Regards,

      Bob

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