The new AD9739A FMC card allows cable head-end equipment manufacturers and others to
rapidly prototype and verify system developments using Xilinx
®
FPGA development boards
equipped with an FMC header. This card can help engineers de-risk the development cycle and
accelerate time-to-market by providing production ready reference HDL code and software for
use in end products. Using the AD9739 allows synthesis of the entire cable spectrum into a
single RF port and increases the number of QAM channels per D/A converter by up to 20 times
to meet cable infrastructure demands while significantly lowering power consumption and
system cost.
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) is used for device configuration as well as readback of status
registers.
Product Highlights:
Ability to synthesize high quality wideband signals with bandwidths of up to 1.25 GHz in the first or
second Nyquist zone.
A proprietary quad-switch DAC architecture provides exceptional ac linearity performance while
enabling mix-mode operation.
A dual-port, double data rate, LVDS interface supports the maximum conversion rate of 2500 MSPS.
On-chip controllers manage external and internal clock domain skews.
Programmable differential current output with a 8.66 mA to 31.66 mA range.
For more information, please visit the Analog Devices wiki for a reference design that
demonstrates the use of an AD9739A FMC Board and a Xilinx ML-605.
Stats:
Device/IC: Analog Devices
®
AD9739A 14-bit, 2.5 GSPS, RF D/A Converter
Connector(s): FMC (FPGA Mezzanine Card) 160-pin connector
