GENERAL DESCRIPTION
The AD9741/AD9743/AD9745/AD9746/AD9747 are pin compatible, high dynamic range, dual digital-to-analog converters (DACs) with 8-/10-/12-/ 14-/16-bit resolutions and sample rates of up to 250 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.
FEATURES
High dynamic range, dual DACs
Low noise and intermodulation distortion
Single carrier WCDMA ACLR = 80 dBc @ 61.44 MHz IF
Innovative switching output stage permits useable outputs
beyond Nyquist frequency
LVCMOS 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, Pb-free, 72-Lead LFCSP
APPLICATIONS
Wireless infrastructure: WCDMA, CDMA2000, TD-SCDMA, WiMAX
Wideband communications: LMDS/MMDS, point-to-point
Instrumentation: RF signal generators, arbitrary waveform generators