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参数资料
| 型号： | ICS84025EMLF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 125 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封装： | 7.50 X 15.33 MM, 2.30 MM HEIGHT, SOIC-24 |
| 文件页数： | 11/12页 |
| 文件大小： | 1450K |
| 代理商： | ICS84025EMLF |
84025EM
www.icst.com/products/hiperclocks.html
REV. A APRIL 16, 2003
8
Integrated
Circuit
Systems, Inc.
ICS84025
CRYSTAL-TO-LVCMOS / LVTTL
FREQUENCY SYNTHESIZER WITH FANOUT BUFFER
PRELIMINARY
FIGURE 4A. ICS84025 SCHEMATIC EXAMPLE
SCHEMATIC EXAMPLE
Figure 4A shows a schematic example of using an ICS84025. In
this example, the input is a 25MHz parallel resonant crystal with
load capacitor CL=18pF. The frequency fine tuning capacitors
C1 and C2 is 22pF and 18pF respectively. This example also
shows logic control input handling. The configuration is set at
F_SEL[1:0]=11 therefore the output frequency is 125MHz. It is
recommended to have one decouple capacitor per power pin.
Each decoupling capacitor should be located as close as pos-
sible to the power pin. The low pass filter R7, C11 and C16 for
clean analog supply should also be located as close to the V
DDA
pin as possible.
VDD
RD2
SP
R1
43
F_SEL1
RD4
SP
C7
0.1u
(U1,17)
C3
0.1u
SP = Spare, Not Installed
F_SEL1
RU3
1K
C2
18p
RD3
SP
VDD
C16
10u
VDD
C6
0.1u
VDDA
PLL_SEL
C5
0.1u
X1
25MHz,18pF
R6
43
RU4
1K
(U1,13)
F_SEL0
PLL_SEL
(U1,5)
C1
22p
Zo = 50
(U1,1)
RU2
1K
C11
0.1u
R7
10
F_SEL0
C4
0.1u
(U1,9)
Zo = 50
VDD=3.3V
U1
ICS84025
1
2
3
4
5
6
7
8
9
10
11
15
17
18
19
20
21
22
23
24
14
12
13
16
VDDO
Q0
GND
Q1
VDDO
Q2
GND
Q3
VDDO
Q4
GND
VDD
VDDA
GND
XTAL2
XTAL1
MR
F_SEL1
F_SEL0
NC
Q5
VDDO
PLL_SEL
VDD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS84025EMT | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
| ICS840271BGILF | 功能描述:IC TRANSLATOR ETHER SYNC 8TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™ 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ICS840271BGILFT | 功能描述:IC TRANSLATOR ETHER SYNC 8TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™ 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ICS840271I | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:SYNCHRONOUS ETHERNET FREQUENCY TRANSLATOR |
| ICS840272I | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:Synchronous Ethernet Frequency Translator |
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