AD9122-cn

AD9122Rev.AInformationfurnishedbyAnalresponsibilityisassumedbyAnarightsofthirdpartiesthatmayrelicenseisgrantedbyimplicationTrademarksandregisteredtradMA02062-9106,U.S.A.=ANALOGQUADRATUREMODULATOR.ogDevicesisbelievedtobeaccurateandreliable.However,nologDevicesforitsuse,norforanyinfringementsofpatentsorothersultfromitsuse.Specicationssubjecttochangewithoutnotice.NoorotherwiseunderanypatentorpatentrightsofAnalogDevices.emarksarethepropertyoftheirrespectiveowners.OneTechnologyWay,P.O.Box9106,Norwood,Tel:[phone]Fax:[phone]©2010AnalogDevices,ADI中文版数据手册是英文版数据手册的译文，敬请谅解翻译中可能存在的语言组织或翻译错误，ADI不对翻译中存在的差异或由此产生的错误负责。如需确认任何词语的准确性，请参考ADI提供的最新英文版数据手册。典型信号链COMPLEXBASEBANDDCCOMPLEXIFfIFRFLO–fIFDIGITALBASEBANDPROCESSORPAIDACQDAC222/42/4ANTIALIASINGFILTERAQMLOSINCOS08281-001双通道、16位、1230MSPS、TxDAC+®数模转换器特性灵活的LVDS接口允许字、字节或半字节加载单载波W-CDMAACLR=82dBc(122.88MHz中频)可调模拟输出：8.7mA至31.7mA，RL=25Ω至50Ω新颖的2×/4×/8×插值器/复数调制器允许将载波放在DAC带宽中的任意位置增益与相位调整支持边带抑制多芯片同步接口高性能、低噪声锁相环(PLL)时钟倍频器数字反sinc滤波器低功耗(全部工作条件下)：1.5W(1.2GSPS)，800mW(500MSPS)72引脚、裸露焊盘LFCSP封装应用无线基础设施W-CDMA、CDMA2000、TD-SCDMA、WiMAX、GSM、LTE数字高/低中频合成发射分集宽带通信：LMDS/MMDS、点对点概述AD9122是一款双通道、16位、高动态范围数模转换器(DAC)，提供1200MSPS采样速率，可以产生最高达奈奎斯特频率的多载波。它具有针对直接变频传输应用进行优化的特性，包括复数数字调制以及增益与失调补偿。DAC输出经过优化，可以与模拟正交调制器无缝接口，例如ADI公司的ADL537xF-MOD系列调制器。四线式串行端口接口允许对许多内部参数进行编程和回读。满量程输出电流可以在8.7mA至31.7mA范围内进行编程。该器件采用72引脚LFCSP封装。产品聚焦1.利用超低噪声与交调失真(IMD)特性，从基带到高中频的宽带信号可以实现高质量合成。2.专有的DAC输出开关技术可增强动态性能。3.电流输出配置简便，可以用于各种单端或差分电路拓扑结构。4.灵活的LVDS数字接口允许标准32线式总线的宽度降至原来的½或¼。图1AD9122Rev.A|Page2of60目录特性....................................................................................................1应用....................................................................................................1概述....................................................................................................1产品聚焦...........................................................................................1典型信号链.......................................................................................1修订历史...........................................................................................3功能框图...........................................................................................4技术规格...........................................................................................5直流规格......................................................................................5数字规格......................................................................................6数字输入数据时序规格...........................................................6交流规格......................................................................................7绝对最大额定值..............................................................................8热阻..............................................................................................8ESD警告.......................................................................................8引脚配置和功能描述.....................................................................9典型工作特性................................................................................11术语..................................................................................................17AD9122R1与AD9122R2的区别..................................................18工作原理.........................................................................................19串行端口操作...........................................................................19数据格式....................................................................................19串行端口引脚功能描述.........................................................19串行端口选项...........................................................................20器件配置寄存器映射和描述.................................................21LVDS输入数据端口.....................................................................33字接口模式...............................................................................33字节接口模式...........................................................................33半字节接口模式.......................................................................33FIFO操作...................................................................................33接口时序....................................................................................35数字数据路径................................................................................37预调制........................................................................................37插值滤波器...............................................................................37NCO调制................................................................................40数据路径配置........................................................................40确定插值滤波器模式...........................................................41数据路径配置示例...............................................................42数据速率与插值模式...........................................................43粗调制混频序列............................................................