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DAC3283: Real Data Input and Real Data Output

Part Number: DAC3283

Hi,


I saw a forum post earlier mentioning about using this DAC to support two real data inputs. It mentioned that I should not use the complex mixer or QMC functions.

I am wondering which registers I need to setup for only "real" data operation? I want to confirm that If I leave bit 1 and bit 0 of CONFIG0 register (mixer_func) set to "00" then it should bypass the complex mixer. I also want to confirm that if I leave any QMC related registers set to default "0" then the data signal would also bypass those functions as well?

Lastly, will this process work if I input two different real data signals into the 16 bit "I and Q" data (of course in the 8 bit format with rising and falling clocks) and then get those two different real data signals to come out of IOUTA1 & IOUTA2 (I am assuming this is what "i" data is) and IOUTB1 & IOUTB2 (I am assuming this what "q" data would be)?

Thanks,

Jason

  • Hi,

    I am wondering which registers I need to setup for only "real" data operation? I want to confirm that If I leave bit 1 and bit 0 of CONFIG0 register (mixer_func) set to "00" then it should bypass the complex mixer. I also want to confirm that if I leave any QMC related registers set to default "0" then the data signal would also bypass those functions as well?

    Yes, correct, bit[1:0] can be set to 00 for no mixing function.

    Yes, you can disable QMC related registers.

    The DAC3283 can support two real data. You can only program the DAC3283 mixing function to be the following to avoid routing of CH B data to CH A, and vice versa

    Lastly, will this process work if I input two different real data signals into the 16 bit "I and Q" data (of course in the 8 bit format with rising and falling clocks) and then get those two different real data signals to come out of IOUTA1 & IOUTA2 (I am assuming this is what "i" data is) and IOUTB1 & IOUTB2 (I am assuming this what "q" data would be)?

    Yes, IOUTA1/A2 will be independent data 1. IOUTB1/B2 can be independent data 2.