參數(shù)資料
型號: ICS84330CM-01LF
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 3/19頁
文件大小: 0K
描述: IC FREQ SYNTHESIZER 28SOIC
標(biāo)準(zhǔn)包裝: 26
系列: HiPerClockS™
類型: 頻率合成器
PLL:
輸入: 晶體
輸出: LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 無/是
頻率 - 最大: 700MHz
除法器/乘法器: 是/無
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 28-SOIC
包裝: 管件
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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