Datasheet

Quick Start Guide AD9788/87/85-DPG2-EBZ
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Figure 5 – DPGDownloader Window
- If the AD978x evaluation board has been recognized by the PC, AD978x should be populated in the Evaluation Board field in
the Hardware Config panel.
- Generate a sine wave by pulling down the “Add Generated Waveform” menu and choosing “Single Tone”. Fill in the form as
shown in (Sample Rate = 50MHz, Desired Frequency = 10 MHz, etc.). Check the “Generate Complex Data (I&Q)” box. Note
that the Sample Rate should match the input sample rate and not the DAC update rate. Also, the Unsigned data needs to be
unchecked because the AD9788 SPI defaults to 2’s complement data format.
- Select the I and Q data vectors in the data selection panel.
- The port configuration will need to be selected 3.3v CMOS the first time you use the AD9779A evaluation board. After the
configuration has loaded, the AD9788 SPI box should turn from gray to black.
- Launch the AD9788 SPI GUI by clicking the AD9788 SPI button. Got to the “Data Clock” section and change the Interpolation
field to “4x”. Select filter mode 0 which is baseband