The AD9767ASTZ is a dual-port high speed 2-channel 14-bit CMOS Digital-to-analog Converter (DAC) integrates two high quality TxDAC+? cores, a voltage reference. The AD9763 offers exceptional AC and DC performance while supporting update rates of up to 125MSPS. The AD9763 has been optimized for processing I and Q data in communications applications. The digital interface consists of two double-buffered latches as well as control logic. Separate write inputs allow data to be written to the two DAC ports independent of one another. Separate clocks control the update rate of the DAC. A mode control pin allows the AD9763 to interface to two separate data ports or to a single interleaved high speed data port. In interleaving mode, the input data stream is demuxed into its original I and Q data and then latched. The I and Q data is then converted by the two DAC and updated at half the input data rate. The GAINCTRL pin allows two modes for setting the full-scale current of the two DACs.
