ad9858中文资料

特点1 GSPS的内部时钟速度高达2 GHz的输入时钟（可选除以2）集成的10位D/ A转换器<145 dBc / Hz的相位噪声@ 1 kHz偏移输出频率为100兆赫（DAC输出）32位可编程频率寄存器简化8位并行和SPI®串行控制接口自动扫频功能4频剖面3.3 V电源供电功耗2 W典型集成的可编程电荷泵和相快速锁定电路与频率探测器隔离电荷泵提供至5 V综合2 GHz的混频器应用甚高频/超高频劳合成调谐器仪器仪表敏捷时钟合成蜂窝基站跳频合成器雷达SONET / SDH时钟合成一般说明AD9858的是特色经营，以1GSPS的10位DAC的直接数字合成器（DDS）。

AD9858的使用先进的DDS技术，加上内部的高速，高性能D / A转换，形成数字可编程的，完整的高频率合成器能够产生高达400兆赫的频率灵活的模拟输出正弦波。

AD9858的设计提供快速跳频和微调分辨率（32位频率控制字）。

被装入了AD9858的频率调整和控制字通过并行（8位）或串行加载格式。

AD9858的包含一个集成的电荷泵（CP）的合成需要一个高速DDS锁相环（PLL）的功能相结合的应用和相位频率检测器（PFD）。

模拟调音台，还提供片上的应用需要一个DDS，PLL和混频器的组合，如频率转换回路，调谐器，等。

在AD9858的时钟输入还设有一个分2，允许外部时钟，以高达2 GHz的高。

AD9858的指定工作在扩展工业温度范围-40°C至85°C目录功能................................................. .. (1)应用................................................. . (1)一般说明................................................ (1)功能块图............................................... .. (1)AD9858的，电气规格.............................................. .. 3绝对最高评分............................................... . (6)防静电注意事项................................................ . (6)引脚配置................................................ .. (7)引脚功能描述............................................... (8)典型性能特性 (10)论操作............................................... .. (15)概述................................................. (15)构件块................................................ (15)操作模式............................................... .. (17)同步................................................. . (19)在AD9858的编程............................................... (21)AD9858的应用建议 (29)评估委员会................................................ . (30)外形尺寸................................................ .. (31)警告................................................. .. (31)订购指南................................................ .. (31)修订历史11/03-Data表改变从启。

0到1 REV的。

一规格变化............................................... (5)移动静电谨慎.............................................. .. (6)移动引脚配置到.............................................. .. (7)移动引脚功能描述到............................................. .. 8到方程的变化............................................... . (19)三角洲频率爬升字的变化（DFRRW） (27)AD9858—ELECTRICAL SPECIFICA TIONSTable 1. Unless otherwise noted, VDD = 3.3 V ±5%, CPVDD = 5 V ±5%, RSET = 2 kΩ, CPISET = 2.4 kΩ, Reference Clock Frequency = 1 GHz.ParameterTempTest LevelMinTypMaxUnitREF CLOCK INPUT CHARACTERISTICS1, 2Reference Clock Frequency Range (Divider Off) Full VI 10 1000 MHz Reference Clock Frequency Range (Divider On) Full VI 20 2000 MHzDuty Cycle @ 1 GHz 25°C V 42 50 58 %Input Capacitance 25°C V 3 pFInput Impedance 25°C IV 1500 ΩInput Sensitivity Full VI –20 +5 dBmDAC OUTPUT CHARACTERISTICSResolution Full 10 BitsFull-Scale Output Current Full 5 20 40 mAGain Error Full VI –10 +10 % FSOutput Offset Full VI 15 μA Differential Nonlinearity Full VI 0.5 1 LSBIntegral Nonlinearity Full VI 1 1.5 LSBOutput Impedance Full VI 100 kΩV oltage Compliance Range Full VI A VDD – 1.5 A VDD + 0.5 V Wideband SFDR (DC to Nyquist)40 MHz FOUT Full V 60 dBc100 MHz FOUT Full V 54 dBc180 MHz FOUT Full V 53 dBc360 MHz FOUT Full V 50 dBc180 MHz FOUT (700 MHz REFCLK) Full IV 52 dBcNarrow-Band SFDR3340 MHz FOUT (±15 MHz) Full V82 dBc40 MHz FOUT (±1 MHz) Full V87 dBc40 MHz FOUT (±50 kHz) Full V 88 dBc100 MHz FOUT (±15 MHz) Full V81 dBc100 MHz FOUT (±1 MHz) Full V82 dBc100 MHz FOUT (±50 kHz) Full V 86 dBc180 MHz FOUT (±15 MHz) Full V74 dBc180 MHz FOUT (±1 MHz) Full V84 dBc180 MHz FOUT (±50 kHz) Full V 85 dBc360 MHz FOUT (±15 MHz) Full V75 dBc360 MHz FOUT (±1 MHz) Full V85 dBc360 MHz FOUT (±50 kHz) Full V 86 dBc180 MHz FOUT (±15 MHz) (700 MHz REFCLK) Full V 65 dBc180 MHz FOUT (±1 MHz) (700 MHz REFCLK) Full V 80 dBc180 MHz FOUT (±50 kHz) (700 MHz REFCLK) Full V 84 dBc OUTPUT PHASE NOISE CHARACTERISTICS (@ 103 MHz IOUT)@ 1 kHz Offset Full V –147 dBc/Hz@ 10 kHz Offset Full V –150 dBc/Hz@ 100 kHz Offset Full V –152 dBc/Hz OUTPUT PHASE NOISE CHARACTERISTICS (@ 403 MHz IOUT)@ 1 kHz Offset Full V –133 dBc/Hz@ 10 kHz Offset Full V –137 dBc/Hz@ 100 kHz Offset Full V –140 dBc/Hz OUTPUT PHASE NOISE CHARACTERISTICS (@ 100 MHz IOUT with 700 MHz REFCLK) @ 100 Hz Offset Full V –125 dBc/Hz@ 1 kHz Offset Full V –140 dBc/Hz@ 10 kHz Offset Full V –148 dBc/Hz@ 100 kHz Offset Full V –150 dBc/Hz@ 1 MHz Offset Full V–150 dBc/Hz@ 10 MHz Offset Full V–150 dBc/Hz PHASE DETECTOR AND CHARGE PUMPPhase Detector Frequency Full VI 150 MHzPhase Detector Frequency (Divide-by-4 Enabled)4 Full VI 400 MHz Charge Pump Sink and Source Current5 Full VI 4 mAFast Lock Current (Acquisition Only) Full VI 7 mAOpen-Loop Current (Acquisition Only) Full VI 30 mASink and Source Current Absolute Accuracy6 Full V 2.5 %Sink and Source Current Matching6 Full V 1 %Input Sensitivity PDIN and D IVIN (50 Ω)7Full IV –15 0 dBmInput Impedence PDIN and DIVIN (Single-Ended) Full V 1 kΩPhase Noise @ 100 MHz Input Frequency@ 10 kHz Offset Full V 110 dBc/Hz@ 100 kHz Offset Full V 140 dBc/Hz@ 1 MHz Offset Full V148 dBc/Hz Charge Pump Output Range8 Full V CPVDD V MIXERIFOUT9 Full V 400 MHz FRF Full VI 2 GHz FLO Full VI 2 GHz Conversion Gain Full VI 0.0 3.5 dBLO Level Full VI –10 +5 dBm RF Level Full VI –20 dBm AD9858的，电动的规格表1。