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

AD9745属于集成电路（IC） > 数模转换器（DAC）。亚德诺半导体技术有限公司制造生产的AD9745数模转换器（DAC）数模转换器（DAC、D/A、D2A 或 D 转 A）可将数字信号转换为缓冲或无缓冲的模拟电压或电流。DAC 架构是否适合特定应用，要取决于分辨率和采样频率。DAC 通常用于音乐播放器，将数字数据流转换为模拟音频流。它们还用于电视和手机，将数字视频数据转换为模拟视频信号，再连接到屏幕驱动器，以显示单色或彩色图像。