Digital-to-Analog Converters
Data Sheet
Dual, 10-/12-/14-/16-Bit, 250 MSPS, Digital-to-Analog Converters
AD9743/AD9745/AD9746/AD9747
FEATURES
High ...
Description
Data Sheet
Dual, 10-/12-/14-/16-Bit, 250 MSPS, Digital-to-Analog Converters
AD9743/AD9745/AD9746/AD9747
FEATURES
High dynamic range, dual digital-to-analog converters (DACs) Low noise and intermodulation distortion Single carrier W-CDMA ACLR = 80 dBc at 61.44 MHz
intermediate frequency (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, RoHS-compliant, 72-lead LFCSP
APPLICATIONS
Wireless infrastructure W-CDMA, CDMA2000, TD-SCDMA, WiMAX
Wideband communications: LMDS/MMDS, point-to-point Instrumentation
Radio frequency (RF) signal generators, arbitrary waveform generators
GENERAL DESCRIPTION
The AD9743/AD9745/AD9746/AD9747 are pin-compatible, high dynamic range, dual DACs with 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.
A proprietary, dynamic output architecture permits synthesis of analog outputs even above Nyquist by shifting energy away...
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