
Analog Devices
GENERAL DESCRIPTION
The AD9739 is a 14-bit, 2.5 GSPS high performance RF digital-to-analog converter (DAC) capable of synthesizing wideband signals from dc up to 3.0 GHz. Its DAC core features a quad switch architecture that provides exceptionally low distortion performance with an industry-leading direct RF synthesis capability. This feature enables multicarrier generation up to the Nyquist frequency in baseband mode as well as second and third Nyquist zones in mix mode. The output current can be programmed over the 8.66 mA to 31.66 mA range.
FEATURES
Direct RF synthesis at 2.5 GSPS update rate
DC to 1.25 GHz in baseband mode
1.25 GHz to 3.0 GHz in mix mode
Industry leading single/multicarrier IF or RF synthesis
fOUT = 350 MHz, ACLR =80 dBc
fOUT = 950 MHz, ACLR = 78 dBc
fOUT = 2100 MHz, ACLR = 69 dBc
Dual-port LVDS data interface
Up to 1.25 GSPS operation
Source synchronous DDR clocking
Pin-compatible with the AD9739A
Multichip synchronization capability
Programmable output current: 8.7 mA to 31.7 mA
Low power: 1.16 W at 2.5 GSPS
APPLICATIONS
Broadband communications systems
Military jammers
Instrumentation, automatic test equipment
Radar, avionics