AD9522-5
目录
特点................................................. ............................................. 1
应用................................................. ...................................... 1
概述................................................ ......................... 1
功能框图............................................... ............... 1
修订历史................................................ ............................... 3
规格................................................. .................................... 4
电源要求............................................... 4 ........
PLL特征................................................ ...................... 4
时钟输入................................................ .................................. 7
时钟输出................................................ ............................... 7
时序特性................................................ ................ 8
时序图................................................ ..................... 8
时钟输出添加剂相位噪声（仅分发; VCO
分频器未使用） .............................................. .......................... 9
时钟输出绝对时间抖动（时钟发生器使用
外置VCXO ） .............................. .......................... 10
时钟输出添加剂时间抖动（ VCO分频器未使用）
....................................................................................................... 10
时钟输出添加剂时抖动（ VCO分频器使用） ..... 11
串行控制端口， SPI模式............................................ .... 11
串行控制端口， I2C模式............................................ .... 12
PD ， SYNC ，和RESET引脚........................................... .......... 13
串行端口设置引脚： SP1 ， SP0 .......................................... ..... 13
LD ，状态和REFMON销........................................... 13
功耗................................................ ....................... 14
绝对最大额定值............................................... ........... 15
热阻................................................ .................... 15
ESD注意事项................................................ ................................ 15
引脚配置和功能描述........................... 16
典型性能特征........................................... 19
术语................................................. ................................... 23
详细框图............................................... ................. 24
工作原理............................................... ....................... 25
操作配置................................................ ...... 25
模式1 ：时钟分配或外部VCO < 1600兆赫
................................................................................................... 25
模式2 ：高频时钟分配-CLK或
外部VCO > 1600兆赫............................................. ..... 27
锁相环（PLL） ........................................... ......... 29
配置PLL的.............................................. ........ 29
相位频率检测器（ PFD ） ........................................ 29
第0版|第76 2
电荷泵（ CP ） ............................................. .................... 29
外部PLL环路滤波器.............................................. ......... 30
PLL参考输入............................................... .............. 30
参考切换................................................ ............. 30
参考分频器 ............................................... ................ 31
VCO / VCXO反馈分频器N： P，A ，B .......................... 31
数字锁定检测（ DLD ） ............................................ ....... 32
模拟锁定检测（ ALD ） ............................................ ....... 32
电流源数字锁定检测（ CSDLD ） .................. 32
外置VCXO / VCO时钟输入（ CLK / CLK ） ................ 33
缓缴................................................. ................................. 33
外部/手动保持模式........................................ 33
自动/内部保持模式.................................... 34
频率状态监控............................................... .... 35
零延迟操作............................................... ................. 37
时钟分配................................................ ..................... 38
操作模式................................................ ................... 38
时钟分频............................................... ...... 38
VCO分频器................................................ ........................... 39
通道分频器................................................ ................... 39
同步输出同步功能................... 41
LVDS输出驱动器............................................... ............. 42
CMOS输出驱动器............................................... ........... 43
复位方式................................................ ................................ 43
上电复位.............................................. ........................ 43
通过RESET引脚..................................... 43硬件复位
软复位通过串行端口............................................ ..... 43
在EEPROM中软复位设置当EEPROM引脚= 0
通过串行端口.............................................. ..................... 43
掉电模式.............................................. .................... 43
芯片掉电通过PD ............................................ ........ 43
PLL掉电.............................................. ..................... 44
分布掉电.............................................. ...... 44
单个时钟输出掉电............................... 44
单个时钟通道关断............................. 44
串行控制端口............................................... .......................... 45
SPI / I2C端口选择............................................. ................... 45
I2C串行口工作.............................................. ............ 45
I
2
C总线特性............................................... ........... 45
数据传输过程............................................... ............. 46
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