參數(shù)資料
型號(hào): SY54020ARMG TR
廠商: Micrel Inc
文件頁(yè)數(shù): 5/5頁(yè)
文件大小: 0K
描述: IC CLK BUFFER 1:4 3.2GHZ 16-MLF
產(chǎn)品培訓(xùn)模塊: High Bandwidth Product Overview
標(biāo)準(zhǔn)包裝: 1,000
系列: Precision Edge®
類型: 扇出緩沖器(分配)
電路數(shù): 1
比率 - 輸入:輸出: 1:4
差分 - 輸入:輸出: 是/是
輸入: CML,LVDS,LVPECL
輸出: CML
頻率 - 最大: 3.2GHz
電源電壓: 2.375 V ~ 2.625 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-VFQFN 裸露焊盤,16-MLF?
供應(yīng)商設(shè)備封裝: 16-MLF?(3x3)
包裝: 帶卷 (TR)
ICS843004AG-125 REVISION A JUNE 3, 2009
9
2009 Integrated Device Technology, Inc.
ICS43004-125 Data Sheet
FEMTOCLOCK CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
R7
50
C6
0.01u
1 8 p F
C1
33pF
3.3V
C8
0.1uF
RU1
1K
C4
0.1uF
VCCA
C7
0.1uF
R3
133
C5
10uF
MR
To Logic
Input
pins
C2
27pF
Ro ~ 7 Ohm
Q1
Driv er_LVCMOS
Set Logic
Input to
'0'
VCC
R2
133
RU2
Not Install
+
-
VCCO
R4
82.5
VCC=3.3V
Zo = 50 Ohm
X1
25MHz
VCC
R1
10
R9
43
nPLL_SEL
R8
50
Set Logic
Input to
'1'
R6
50
Optional
Y-Termination
C3
0.1uF
VDD
Logic Control Input Examples
Zo = 50 Ohm
VCCO
VCC
RD1
Not Install
Zo = 50 Ohm
+
-
RD2
1K
Zo = 50 Ohm
U1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
nQ1
Q1
VC
C
O
Q0
nQ0
MR
n
P
LL
_S
E
L
nc
VC
C
A
nc
VC
C
nc
XT
AL
_
O
U
T
XT
AL
_
IN
VEE
RE
F
_
C
L
K
nX
T
A
L_
S
E
L
VC
C
VEE
nQ
3
Q3
VC
C
O
Q2
nQ
2
VCCO=3.3V
nXTAL_SEL
R5
82.5
VDD
To Logic
Input
pins
Zo = 50 Ohm
VCC
VCCO
LAYOUT GUIDELINE
Figure 5 shows an example of ICS843004-125 application
schematic. In this example, the device is operated at V
CC = VCCO =
3.3V. The 18pF parallel resonant 25MHz crystal is used. The C1=
33pF and C2 = 27pF are recommended for frequency accuracy.
For different board layout, the C1 and C2 may be slightly adjusted
FIGURE 5. ICS843004-01 SCHEMATIC EXAMPLE
for optimizing frequency accuracy. Two examples of LVPECL
terminations are shown in this schematic. Additional termination
approaches are shown in the LVPECL Termination Application
Note.
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