- 您现在的位置：买卖IC网 > PDF目录67689 > ICS843021AGT 140 MHz, OTHER CLOCK GENERATOR, PDSO8 PDF资料下载
参数资料
| 型号： | ICS843021AGT |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 140 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封装： | 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8 |
| 文件页数： | 11/13页 |
| 文件大小： | 186K |
| 代理商： | ICS843021AGT |
843021AG
www.icst.com/products/hiperclocks.html
REV. C MARCH 31, 2005
7
Integrated
Circuit
Systems, Inc.
ICS843021
FEMTOCLOCKSCRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
APPLICATION SCHEMATIC
Figure 3A shows a schematic example of the ICS843021. 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 18pF
parallel resonant 25MHz crystal is used for generating 125MHz
output frequency. The C1 = 27pF and C2 = 33pF are recom-
mended for frequency accuracy. For different board layout, the
C1 and C2 values may be slightly adjusted for optimizing fre-
quency accuracy.
FIGURE 3A. ICS843021 SCHEMATIC EXAMPLE
FIGURE 3B. ICS843021 PC BOARD LAYOUT EXAMPLE
PC BOARD LAYOUT EXAMPLE
Figure 3B shows an example of ICS843021 P.C. board layout.
The crystal X1 footprint shown in this example allows installa-
tion of either surface mount HC49S or through-hole HC49 pack-
age.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
Zo = 50 Ohm
VCC
X1
25MHz
VCC=3.3V
C3
10uF
VCC
C1
27pF
Q
C5
0.1u
R3
133
C2
33pF
VCC
Zo = 50 Ohm
U1
ICS843011
1
2
3
4
8
7
6
5
VCCA
VEE
XTAL_OUT
XTAL_IN
VCC
Q0
nQ0
NC
R4
82.5
C4
0.01u
R5
133
nQ
VCCA
R6
82.5
18pF
R2
10
+
-
ICS843021
相关PDF资料 |
PDF描述 |
|---|---|
| ICS843023AGILF | 320 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS843023AGLFT | 320 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS843023AGLF | 320 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS843031AG-01LFT | 340 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| ICS843031AG-01LF | 340 MHz, OTHER CLOCK GENERATOR, PDSO8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843021I-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR |
| ICS843022 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843022AG | 制造商:INT_DEV_TECH 功能描述: |
| ICS843022AGI-48LF | 功能描述:IC CLK SYNTHESIZER LVPECL 8TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS843022AGI-48LFT | 功能描述:IC CLK SYNTHESIZER LVPECL 8TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
发布紧急采购，3分钟左右您将得到回复。