If I use the DAC AD5781 to output a DC voltage, how can I reduce the noise of this DAC output? How many aspects can I think about?
Generally speaking, the reference is the dominant source of output noise, so it is best to make sure keep the reference as clean as possible. The supplies and the op amp output amplifier are also contributors to the output noise. Also, the grounding, decoupling, and other factors related to board layout must be reviewed.
May I know the noise levels that you see at the output, reference and the supplies? It would be great if you can share your schematic diagram(with component values) and board layout here. Thanks.
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