Data Sheet
FEATURES
High dynamic range, dual DAC parts Low noise and intermodulation distortion Single carrier W-CDMA AC...
Data Sheet
FEATURES
High dynamic range, dual DAC parts Low noise and intermodulation distortion Single carrier W-CDMA ACLR = 80 dBc at 61.44 MHz IF Innovative switching output stage permits usable outputs
beyond Nyquist frequency LVDS inputs with dual-port or optional interleaved single-
port operation Differential analog current outputs are programmable from
8.6 mA to 31.7 mA full scale Auxiliary 10-bit current DACs with source/sink capability for
external offset nulling Internal 1.2 V precision reference
voltage source Operates from 1.8 V and 3.3 V supplies 315 mW power dissipation Small footprint, RoHS compliant, 72-lead LFCSP
APPLICATIONS
Wireless infrastructure W-CDMA, CDMA2000, TD-SCDMA, WiMAX Wideband communications LMDS/MMDS, point-to-point RF signal generators, arbitrary waveform generators
Dual 12-/14-/16-Bit, LVDS Interface, 500 MSPS DACs
AD9780/AD9781/AD9783
GENERAL DESCRIPTION
The AD9780/AD9781/AD9783 include pin-compatible, high dynamic range, dual digital-to-analog converters (DACs) with 12-/14-/16-bit resolutions, and sample rates of up to 500 MSPS. The devices include specific features for direct conversion transmit applications, including gain and offset compensation, and they interface seamlessly with analog quadrature modulators such as the ADL5370.
A proprietary, dynamic output architecture permits synthesis of analog outputs even above Nyquist by shifting energy away from the fundamental and into the image frequency.
Full programmability is provided thr...