The DAC39J84 uses three different power supply voltages. Some of the DAC power supplies are noise sensitive. The table below is a summary of the various power supply of the DAC. Care should be taken to keep clean power supplies routing away from noisy digital supplies. It is recommended to use at least two power layers. Avoid placing digital supplies and clean supplies on adjacent board layers and use a ground layer between noisy and clean supplies if possible. All supplies pins should be decoupled as close to the pins as possible using small value capacitors, with larger bulk capacitors placed further away.