FEMTOC
參數(shù)資料
型號(hào): ICS843002AGI-01LFT
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 2/17頁(yè)
文件大?。?/td> 0K
描述: IC SYNTHESIZER LVPECL 20-TSSOP
標(biāo)準(zhǔn)包裝: 2,500
系列: HiPerClockS™, FemtoClock™
類型: 頻率合成器
PLL: 帶旁路
輸入: 晶體
輸出: LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 無(wú)/是
頻率 - 最大: 170MHz
除法器/乘法器: 是/無(wú)
電源電壓: 2.97 V ~ 3.63 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 帶卷 (TR)
其它名稱: 843002AGI-01LFT
843002AGI-01
www.idt.com
REV. A DECEMBER 14, 2010
10
ICS843002I-01
FEMTOCLOCKS CRYSTAL-TO-
3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
LAYOUT GUIDELINE
Figure 5A shows a schematic example of the ICS843002I-01.
An example of LVEPCL termination is shown in this schematic.
Additional LVPECL termination approaches are shown in the
LVPECL Termination Application Note. In this example, an 18 pF
FIGURE 5A. ICS843002I-01 SCHEMATIC EXAMPLE
parallel resonant 26.5625MHz crystal is used. The C1=27pF
and C2=33pF are recommended for frequency accuracy. For
different board layout, the C1 and C2 may be slightly adjusted
for optimizing frequency accuracy.
PC BOARD LAYOUT EXAMPLE
Figure 5B shows an example of ICS843002I-01 P.C. board lay-
out. The crystal X1 footprint shown in this example allows in-
stallation of either surface mount HC49S or through-hole HC49
package. The footprints of other components in this example
are listed in the
Table 6. There should be at least one decoupling
capacitor per power pin. The decoupling capacitors should be
located as close as possible to the power pins. The layout as-
sumes that the board has clean analog power ground plane.
FIGURE 5B. ICS843002I-01 PC BOARD LAYOUT EXAMPLE
e
c
n
e
r
e
f
e
Re
z
i
S
2
C
,
1
C2
0
4
0
3
C5
0
8
0
8
C
,
7
C
,
6
C
,
5
C
,
4
C3
0
6
0
2
R3
0
6
0
s
e
z
i
s
t
n
e
n
o
p
m
o
c
s
t
s
il
,
6
e
l
b
a
T
:
E
T
O
N
.
e
l
p
m
a
x
e
t
u
o
y
a
l
s
i
h
t
n
i
n
w
o
h
s
TABLE 6. FOOTPRINT TABLE
ICS843002I-01
VCC
Logic Control Input Examples
C4
0.01u
R3
133
+
-
Optional Termination
R5
133
C7
0.1u
C8
0.1u
VCCA
VC
C
VCCO
RU2
Not Install
Zo = 50 Ohm
Set Logic
Input to
'1'
R7
50
R4
82.5
C2
33pF
RD2
1K
Zo = 50 Ohm
C9
0.1u
R9
50
To Logic
Input
pins
R2
10
RD1
Not Install
U1
ICS843002i-01
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
VC
C
O
Q0
nQ
0
MR
nP
LL_
S
E
L
nc
VC
C
A
F
_
SEL
0
VC
C
F_
S
E
L
1
XT
AL
_
O
U
T
XT
AL
_
IN
RE
F
_
CL
K
n
X
T
A
L
_
SEL
VC
C
VEE
nQ
1
Q1
V
CCO
n
c
VCC
R6
82.5
VCCO
+
-
1 8 p F
X1
25 MHz
3.3V
VCC
C6
0.1u
VCC=3.3V
C3
10uF
C1
27pF
VCCO=3.3V
RU1
1K
To Logic
Input
pins
R8
50
Zo = 50 Ohm
Set Logic
Input to
'0'
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參數(shù)描述
ICS843002AGI-01T 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843002AGILF 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器,PLL,頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL,晶體 輸出:PECL 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:800MHz 除法器/乘法器:是/無(wú) 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°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
ICS843002AGILFT 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器,PLL,頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器,扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP(8x8) 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT
ICS843002AGIT 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
ICS843002AGLF 功能描述:IC SYNTHESIZER LVPECL 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器,PLL,頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器,扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP(8x8) 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT