ADI AD9739A高性能14位2.5 GSPS数模转换解决方案
ADI 公司的AD9739A是高性能14位2.5 GSPS数模转换器（DAC），信号带宽从DC到3GHz，混合模式从1.25GHz到3GHz，双端口LVDS数据接口，可编输出电流从8.7mA到31.7mA，工作电压1.8V-3.3V，在2.5GSPS时的功耗为1.1W，主要用在宽带和通信系统，DOCSIS CMTS系统，军用干扰发射机，仪器和ATE，雷达和航天设备。本文介绍了AD9739A主要特性，产品亮点，功能方框图，和主处理器间推荐数字接口框图以及多种应用电路。
The AD9739A is a 14-bit, 2.5 GSPS high performance RF DAC capable of synthesizing wideband signals from dc up to 3 GHz. The AD9739A is pin and functionally compatible with the AD9739 with the exception that the AD9739A does not support synchronization and is specified to operate between 1.6 GSPS and 2.5 GSPS. By elimination of the synchronization circuitry, some nonideal artifacts such as images and discrete clock spurs remain stationary on the AD9739A between power-up cycles, thus allowing for possible system calibration. AC linearity and noise performance remain the same between the AD9739 and AD9739A.
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