AD9739ABBCZ

The AD9739A is a 14-bit, 2.5 GSPS high performance RF DAC capable of synthesizing wideband signals from DC up to 3 GHz. The AD9739A is pin and functionally compatible with the AD9739 with the exception that it does not support synchronization and is specified to operate between 1.6-2.5 GSPS. By elimination of the synchronization circuitry, some non-ideal artifacts (i.e. images and discrete clock spurs) remain stationary on the AD9739A between power-up cycles thus allowing for possible system calibration. AC linearity and noise performance remains the same between the AD9739 and AD9739A. The inclusion of on-chip controllers simplifies system integration. A dual-port source synchronous LVDS interface simplifies the digital interface with existing FGPA/ASIC technology. On-chip controllers are used to manage external and internal clock domain variations over temperature to ensure reliable data transfer from the host to the DAC core. A serial peripheral interface (SPI) for device configuration as well as readback of status registers. The AD9739A is manufactured on a 0.18 µm CMOS process and operates from 1.8 V and 3.3 V supplies. It is supplied in a 160-ball chip scale ball grid array for reduced package parasitics.