RF-DAC Output Current Mode (Gen 1/Gen 2) - 2.6 English

Zynq UltraScale+ RFSoC RF Data Converter v2.6 Gen 1/2/3/DFE LogiCORE IP Product Guide (PG269)

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2.6 English

The RF-DAC output current is configurable, with an option of operating in either 20 mA or 32 mA modes. In the 20 mA mode, set the DAC_AVTT to 2.5V and in the 32 mA mode, set it to 3.0V to maintain the linearity performance.

A 3.0V DAC_AVTT should not be used in the 20 mA mode. This risks exceeding the maximum ratings of the device and also risks affecting device reliability.

The output current can be set in the Advanced tab in the IP core configuration screen (see the following figure).

Figure 1. RF-DAC Output Current Configuration