This breakout board helps me to interface my FPGA with the DAC900E from Texas Instruments.
The DAC has 165 MSPS and 10 bits which is quite some speed.
The combination FPGA and DAC opens up for experiments with digital signal processing, like making a direct digital synthesizer (DDS), digital modulation and many more. The DAC is fast enough to use it in the TX part for a shortwave radio without any analog mixer required.
A detailed description can be found: