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DAC81408EVM: DAC81408EVM

Mohammadali Panahi
Prodigy 20 points

Part Number: DAC81408EVM

Hi Guys,

I need 8 independent sinusoidal wave with the same frequency of 277 Hz and different amplitude varies from(-1:1) to (-10:10) volt. It means the amplitude of these 8 channel should be controlled and changed by MCU. 

I searched and find (DAC81408 8-channel) to create these 8 independent controllable sinusoidal wave. I have some questions about these board. As I like to use software or GUI to setup and control these 8 channel without writing basic machine code, this evaluation board provides this controlling software or not? I have seen that a GUI is provided, however, it seems to be very basic and there is no option to control the amplitude and frequency of each channel. 

Could you guys help me to find the best option? 

Thanks,

Mohammadali

  • 0
    TI__Mastermind 46290 points
    Mohammadali,

    The GUI is relatively simple as the main utilization case of these kinds of products is most often very slow moving or DC applications that do not require complex waveform generation schemes. As such, simple low-frequency code transitions are often good enough for evaluation purposes.

    If attempting to implement more complicated schemes than the GUI supports, we typically suggest looking at one of the LaunchPad platforms to implement some custom code along with CCS Cloud.
  • 0 in reply to Kevin Duke
    Prodigy 20 points
    As you said the GUI is simple. I need to control 8 channel of 300 Hz sinusoidal wave independently. Which type of code or interface I should use to control the DAC? I am not expert in microelectronic and looking for schematic easy software like labview to create the required code in MCU.

    I like to set the frequency equal to 300 HZ and change the amplitude of sine wave, is it possible to do that in the provided GUI? if not what I should do? What LaunchPad is suitable? Please give me some suggestions? Is there any other device in your company that I can use to create 8 sine wave with controlled amplitude?

    Thanks,
    Mohammadali
  • 0 in reply to Mohammadali Panahi
    TI__Mastermind 46290 points
    Mohammadali,

    As I mentioned, the GUI is not designed to create any sinusoidal waveform. Therefore, you will need to explore something more customized. The two options that leverage anything from TI that I can see for you are to either write some code for a LaunchPad platform of your choice and connect that to the DAC EVM, or to consider trying to leverage DXP. DXP does not have an XML configuration file for this particular DAC, but if you open one of the existing XML files you can probably interpret the mark-up and extend coverage to the DAC81408 yourself.