To get a high resolution driver with fast switching time, AA has designed direct digital synthesizers based on monolithic IC circuits. 3 models have already been released, and different units can be designed to specific requirements.
These models offer high frequency accuracy and stability and extremely fast switching times, generally of a few tens of nanoseconds (40 to 100). The DAC circuits have been designed with utmost care to obtain clean RF signals, with minimum spurious noise. Data Sheet: DDSPA-XX