参数资料
型号: AD9548BCPZ-REEL7
厂商: Analog Devices Inc
文件页数: 17/112页
文件大小: 0K
描述: IC CLOCK GEN/SYNCHRONIZR 88LFCSP
产品变化通告: AD9548 Mask Change 20/Oct/2010
标准包装: 400
类型: 时钟/频率发生器,同步器
PLL:
主要目的: 以太网,SONET/SDH,Stratum
输入: CMOS,LVDS,LVPECL
输出: CMOS,LVDS,LVPECL
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 是/是
频率 - 最大: 750kHz
电源电压: 1.71 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 88-VFQFN 裸露焊盘,CSP
供应商设备封装: 88-LFCSP-VQ(12x12)
包装: 带卷 (TR)
AD9548
Data Sheet
Rev. E | Page 12 of 112
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
TIMING
SCL Clock Rate
400
kHz
Bus-Free Time Between a Stop and Start
Condition, tBUF
1.3
s
Repeated Start Condition Setup Time,
tSU; STA
0.6
s
Repeated Hold Time Start Condition, tHD;STA
0.6
s
After this period, the first clock
pulse is generated.
Stop Condition Setup Time, tSU; STO
0.6
s
Low Period of the SCL Clock, tLO
1.3
s
High Period of the SCL Clock, tHI
0.6
s
SCL/SDA Rise Time, tR
20 + 0.1 Cb1
300
ns
SCL/SDA Fall Time, tF
20 + 0.1 Cb1
300
ns
Data Setup Time, tSU; DAT
100
ns
Data Hold Time, tHD; DAT
100
ns
Capacitive Load for Each Bus Line, Cb1
400
pF
1
Cb is the capacitance (pF) of a single bus line.
JITTER GENERATION
Table 19.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
JITTER GENERATION
fREF = 1 Hz1; fDDS = 122.88 MHz2; fLOOP = 0.01 Hz3
fSYSCLK = 20 MHz4 OCXO; fS = 1 GHz5; Q-
divider = 1; default SysClk PLL charge pump
current; results valid for LVPECL, LVDS, and
CMOS output logic types
Bandwidth: 100 Hz to 61 MHz
0.81
ps rms
Random jitter
Bandwidth: 5 kHz to 20 MHz
0.73
ps rms
Random jitter
Bandwidth: 20 kHz to 80 MHz
0.79
ps rms
Random jitter
Bandwidth: 50 kHz to 80 MHz
0.78
ps rms
Random jitter
Bandwidth: 4 MHz to 80 MHz
0.37
ps rms
Random jitter
fREF = 8 kHz1; fDDS = 155.52 MHz2; fLOOP = 100 Hz3
fSYSCLK = 50 MHz4 crystal;
fS = 1 GHz5; Q-divider = 1; default SYSCLK
PLL charge pump current; results valid for
LVPECL, LVDS, and CMOS output logic types
Bandwidth: 100 Hz to 77 MHz
0.71
ps rms
Random jitter
Bandwidth: 5 kHz to 20 MHz
0.34
ps rms
Random jitter
Bandwidth: 20 kHz to 80 MHz
0.43
ps rms
Random jitter
Bandwidth: 50 kHz to 80 MHz
0.43
ps rms
Random jitter
Bandwidth: 4 MHz to 80 MHz
0.31
ps rms
Random jitter
fREF = 19.44 MHz1; fDDS = 155.52 MHz2; fLOOP = 1 kHz3
fSYSCLK = 50 MHz4 crystal;
fS = 1 GHz5; Q-divider = 1; default SYSCLK
PLL charge pump current; results valid for
LVPECL, LVDS, and CMOS output logic types
Bandwidth: 100 Hz to 77 MHz
1.05
ps rms
Random jitter
Bandwidth: 5 kHz to 20 MHz
0.34
ps rms
Random jitter
Bandwidth: 20 kHz to 80 MHz
0.43
ps rms
Random jitter
Bandwidth: 50 kHz to 80 MHz
0.43
ps rms
Random jitter
Bandwidth: 4 MHz to 80 MHz
0.32
ps rms
Random jitter
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