I would like to know if there is a posibility of using the AD9142 in single-tone mode without the DPG.
If yes, how to do it?
Normally the answer is no. But depending on what you want to do, there might be some workarounds.
The AD9142 has an on-chip NCO, which can generate a sine wave with the desired frequency. The amplitude of the sine wave, however, is random depending on the power-on values in the FIFO. What you need to do is tie the input data bus to a fixed DC value and find a way to toggle DCI several times so the value gets loaded into the FIFO. This ensures the repeatability of the tone generated.
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