RF-DAC output current settings are only available with the RF evaluation tool. In the overview tab, click the Power Settings button to open the RF-DAC output settings page in the right panel. Choose from the available 20 mA/2.5V and 32 mA/3.0V options. Power supply for this current mode control (DAC_AVTT) is programmable on the board through the power management unit (PMU). Click Apply to program the onboard PMU for either 2.5V or 3.0V, and switch to the corresponding RF-DAC output current mode.
Note: In Gen 3, the variable output power (VOP) provides fine control for the DAC output. For more information, see Zynq UltraScale+ RFSoC RF Data Converter LogiCORE IP Product Guide (PG269).
Figure 1. RF-DAC Current Mode