参数资料
型号: AD9548BCPZ
厂商: Analog Devices Inc
文件页数: 24/112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: 1
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: 托盘
Data Sheet
AD9548
Rev. E | Page 19 of 112
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 361fs (–69.0dBc)
20kHz TO 80MHz: 441fs (–67.3dBc) (EXTRAPOLATED)
08022-
069
Figure 7. Additive Phase Noise (Output Driver = LVPECL),
fR = 19.44 MHz, fO = 155.52 MHz,
LBW = 1 kHz, fSYS = 50 MHz, PLL On
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
10
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 10MHz: 717fs (–65.1dBc)
12kHz TO 20MHz: 725fs (–65.0dBc)
20kHz TO 80MHz: 790fs (–64.3dBc)
08022-
044
Figure 8. Additive Phase Noise (Output Driver = LVPECL),
fR = 1 Hz, fO = 122.88 MHz,
LBW = 0.05 Hz, fSYS = 20 MHz (OCXO), PLL On
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 336fs (–69.7dBc)
20kHz TO 80MHz: 425fs (–67.6dBc) (EXTRAPOLATED)
08022-
052
Figure 9. Additive Phase Noise (Output Driver = LVPECL),
fR = 8 kHz, fO = 155.52 MHz,
LBW = 100 Hz, fSYS = 50 MHz (Crystal), PLL On
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY (Hz)
ROHDE & SCHWARZ
SMA100 (1GHz)
ROHDE & SCHWARZ
SMA100 (50MHz)
50MHz CRYSTAL
08022-
058
Figure 10. Additive Phase Noise Comparison of SYSCLK Input Options
(Output Driver = LVPECL),
fR = 19.44 MHz, fO = 311.04 MHz, LBW = 1 kHz
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 356fs (–69.2dBc)
20kHz TO 80MHz: 435fs (–67.4dBc) (EXTRAPOLATED)
08022-
054
Figure 11. Additive Phase Noise (Output Driver = LVPECL),
fR = 1 Hz, fO = 155.52 MHz,
LBW = 0.05 Hz, fSYS = 50 MHz, PLL On
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 245fs (–72.4dBc)
20kHz TO 80MHz: 300fs (–64.3dBc) (EXTRAPOLATED)
08022-
051
Figure 12. Additive Phase Noise (Output Driver = LVPECL) ,
fR = 19.44 MHz, fO = 155.52 MHz,
LBW = 1 kHz, fSYS = 50 MHz (Crystal), PLL On with
2x Frequency Multiplier, ICP = 375 μA, LF = External (350 kHz)
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