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参数资料
| 型号： | ICS843253AGI-45LFT |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 15/15页 |
| 文件大小： | 0K |
| 描述： | IC SYNTHESIZER LVPECL 16-TSSOP |
| 标准包装： | 2,500 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 频率合成器 |
| PLL： | 带旁路 |
| 输入： | 晶体 |
| 输出： | LVCMOS，LVPECL，LVTTL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:3 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 156.25MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | 843253AGI-45LFT |
ICS843253I-45
FEMTOCLOCK CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS843253AGI-45 REVISION A JULY 20, 2009
9
2009 Integrated Device Technology, Inc.
Schematic Example
Figure 5 shows an example of ICS843253I-45 application schematic.
In this example, the device is operated at VCC = 3.3V. The 18pF
parallel resonant 25MHz is used. The C1= 27pF and C2 = 27pF are
recommended for frequency accuracy. For different board layout, the
C1 and C2 may be slightly adjusted for optimizing frequency accuacy.
Two examples of LVPECL terminations and one example of LVCMOS
are shown in this schematic. Additional termination approaches are
shown in the LVPECL Termination Application Note.
Figure 5. ICS843253I-45 Schematic Layout
Zo = 50
VCCOB
3.3V
VCC=3.3V
nQB
CLK_ENB
Logic Input Pin Examples
18pF
VCC
U1
ICS843253I_45
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CLK_ENA
VEE
QA
nQA
VCCOA
VCCA
VCC
REF_OUT
VEE
XTAL_OUT
XTAL_IN
VCCOB
nQB
QB
VEE
CLK_ENB
RU2
Not Install
RD2
1K
C1
27pF
Optional
LVPECL
Y-Termination
RU1
1K
To Logic
Input
pins
R9
33
R6
50
Set Logic
Input to
'0'
VCCOA=3.3V
R7
50
C7
0.1u
nQA
Receiv er
+
-
Set Logic
Input to
'1'
VCC
R1
133
+
-
C6
0.1u
C3
0.1u
To Logic
Input
pins
25MHz
QA
X1
C2
27pF
VCCOB=3.3V
R8
50
R4
82.5
C5
10u
C4
0.1u
R2
133
TL1
Zo = 50 Ohm
RD1
Not Install
CLK_ENA
VCC
REF_OUT
Zo = 50 Ohm
R3
82.5
VCCOA
QB
VCCA
TL2
Zo = 50 Ohm
R5
10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843256 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843256AG | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843256AGILF | 制造商:Integrated Device Technology Inc 功能描述:PLL Frequency Synthesizer Single 24-Pin TSSOP Tube |
| ICS843256AGLF | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS843256AGLFT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
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