參數(shù)資料
型號: ICS844031AG-01LFT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時鐘產(chǎn)生/分配
英文描述: 340 MHz, OTHER CLOCK GENERATOR, PDSO8
封裝: 4.40 X 3 MM, 0.925 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-8
文件頁數(shù): 13/13頁
文件大小: 279K
代理商: ICS844031AG-01LFT
IDT / ICS LVDS CLOCK GENERATOR
9
ICS844031AG-01 REV. B NOVEMBER 14, 2007
ICS844031-01
FEMTOCLOCKS CRYSTAL-TO-LVDS CLOCK GENERATOR
PRELIMINARY
FIGURE 5A. APPLICATION SCHEMATIC EXAMPLE
APPLICATION SCHEMATIC
Figure 5A provides a schematic example of ICS844031-01. In
this example, an 18 pF parallel resonant crystal is used. The
C1=22pF and C2=22pF are recommended for frequency. The C1
and C2 values may be slightly adjusted for optimizing frequency
accuracy. At least one decoupling capacitor near the power pin is
required. Suggested value range is from 0.01uF to 0.1uF. Other
filter type can be added depending on the system power supply
noise type.
FIGURE 5B. ICS844031-01 PC BOARD LAYOUT EXAMPLE
PC BOARD LAYOUT EXAMPLE
Figure 5B shows an example of ICS844031-01 P.C. board layout.
The crystal X1 footprint shown in this example allows installation
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 assumes that the
board has clean analog power ground plane.
TABLE 6. FOOTPRINT TABLE
e
c
n
e
r
e
f
e
Re
z
i
S
2
C
,
1
C2
0
4
0
3
C5
0
8
0
5
C
,
4
C3
0
6
0
2
R3
0
6
0
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
e
z
i
s
C4
0.01u
R2
10
Zo = 50 Ohm
CL=18pF
R3
100
X1
C5
0.1u
VDD
C2
22pF
U1
ICS844031
1
2
3
4
8
7
6
5
VCCA
GND
XTAL_OUT
XTAL_IN
VDD
Q0
nQ0
OE
C1
22pF
R1
1K
LVDS
+
-
Zo = 50 Ohm
VDD
VDDA
VDD= 3.3V or 2.5V
C3
10uF
VDD
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ICS844031BG-01LF 功能描述:IC CLK GEN ETHERNET 8TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(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
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ICS844031BGI-01 制造商:Integrated Device Technology Inc 功能描述:IC SYNTHESIZER LVDS 8TSSOP