参数资料
型号: ICS84330CV-01LFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 3/19页
文件大小: 0K
描述: IC SYNTHESIZER 700MHZ 28-PLCC
标准包装: 500
系列: HiPerClockS™
类型: 频率合成器
PLL:
输入: 晶体
输出: LVPECL
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 无/是
频率 - 最大: 700MHz
除法器/乘法器: 是/无
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 28-LCC(J 形引线)
供应商设备封装: 28-PLCC(11.5x11.5)
包装: 带卷 (TR)
其它名称: 84330CV-01LFT
ICS84330-01 Data Sheet
700MHZ, LOW JITTER, CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS84330CM-01 REVISION A FEBRUARY 23, 2010
11
2010 Integrated Device Technology, Inc.
Figure 5. Cycle-to-Cycle Jitter vs. fOUT (using a 16MHz crystal)
Termination for 3.3V LVPECL Outputs
The clock layout topology shown below is a typical termination for
LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
The differential outputs are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, terminating
resistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50
transmission lines. Matched impedance techniques should be used
to maximize operating frequency and minimize signal distortion.
Figures 6A and 6B show two different layouts which are
recommended only as guidelines. Other suitable clock layouts may
exist and it would be recommended that the board designers
simulate to guarantee compatibility across all printed circuit and clock
component process variations.
Figure 6A. 3.3V LVPECL Output Termination
Figure 6B. 3.3V LVPECL Output Termination
50
40
30
20
10
0
200
300
600
700
400
500
Output Frequency (MHz)
Cyc
le-to-Cyc
le
Jitter
(ps)
N = 1
Spec Limit
3.3V
V
CC - 2V
R1
50
R2
50
RTT
Z
o = 50
Z
o = 50
+
_
RTT =
* Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
3.3V
LVPECL
Input
R1
84
R2
84
3.3V
R3
125
R4
125
Z
o = 50
Z
o = 50
LVPECL
Input
3.3V
+
_
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