AD9577
目录
特点................................................. ............................................. 1
应用................................................. ...................................... 1
概述................................................ ......................... 1
功能框图............................................... ............... 1
修订历史................................................ ............................... 2
规格................................................. .................................... 3
PLL1特征................................................ .................... 3
PLL1时钟输出抖动.............................................. ............... 5
PLL2小数N分频模式特征................................. 6
PLL2整数N模式的特点....................................... 7
PLL2时钟输出抖动.............................................. ............... 9
CMOS参考时钟输出抖动...................................... 11
时序特性................................................ .............. 12
时钟输出................................................ ............................. 13
电源................................................. ........................................... 14
晶体振荡器................................................ ........................ 15
参考输入................................................ ........................... 15
控制引脚................................................ ................................ 15
绝对最大额定值............................................... ........... 16
热特性................................................ ............ 16
ESD注意事项................................................ ................................ 16
引脚配置和功能描述........................... 17
典型性能特征........................................... 19
REFOUT和PLL1相位噪声性能...................... 19
PLL2相位噪声性能.............................................. .. 20
输出抖动................................................ ................................ 21
典型的输出信号............................................... ................. 22
典型的扩频性能特性........ 24
术语................................................. ................................... 25
详细框图............................................... ................. 27
数据表
示例应用程序................................................ .................. 28
功能说明................................................ .................. 29
参考输入和参考分频器................................. 29
输出通道分频器............................................... ........... 30
输出................................................. ....................................... 30
基准输出缓冲器............................................... ............ 31
PLL1整数N分频PLL ............................................. ...................... 31
PLL1相位频率检测器（ PFD）和电荷泵。 32
PLL1 VCO ................................................ ................................... 32
PLL1反馈分频器............................................... .............. 32
设置PLL1 .................................... 32的输出频率
PLL2整数/小数N分频PLL ........................................... .... 32
PLL2相位频率检测器（ PFD）和电荷泵。 33
PLL2环路带宽............................................... ................ 33
PLL2 VCO ................................................ ................................... 33
PLL2反馈分频器............................................... .............. 33
PLL2 Σ- Δ调制器............................................. .................... 33
推动机制................................................ ....................... 33
优化PLL性能............................................... ... 34
设置PLL2 .................................... 34的输出频率
裕................................................. ................................... 35
扩频时钟发生器（ SSCG ） .......................... 35
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2
C接口时序和内部寄存器描述........... 38
默认频率图和输出格式........................ 40
I
2
C接口操作............................................... .............. 40
典型应用电路............................................... ...... 42
电源和接地注意事项和电源
拒绝................................................. ..................................... 43
外形尺寸................................................ ....................... 44
订购指南................................................ .......................... 44
修订历史
10月11日 - 修订版0 ：初始版
第0版|第44 2
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