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参数资料
| 型号： | ICS84326AM |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 150 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封装： | 7.50 X 15.33 MM, 2.30 MM HEIGHT, MS-013, MO-119, SOIC-24 |
| 文件页数： | 15/15页 |
| 文件大小： | 171K |
| 代理商： | ICS84326AM |
84326AM
www.icst.com/products/hiperclocks.html
REV. A MARCH 10, 2003
9
Integrated
Circuit
Systems, Inc.
ICS84326
CRYSTAL-TO-3.3V LVPECL
SERIAL ATTACHED SCSI CLOCK SYNTHESIZER/FANOUT BUFFER
PRELIMINARY
FIGURE 5A. ICS84326 SCHEMATIC EXAMPLE
CRYSTAL INPUT INTERFACE
The ICS84326 has been characterized with 18pF parallel
resonant crystals. The capacitor values, C1 and C2, shown
in
Figure 4 below were determined using a 25MHz, 18pF
Figure 4. CRYSTAL INPUt INTERFACE
C2
22pF
C1
18pF
25MHz X1
ICS84326
19
20
XTAL2
XTAL1
parallel resonant crystal and were chosen to minimize the
ppm error. The optimum C1 and C2 values can be slightly
adjusted for different board layouts.
SCHEMATIC EXAMPLE
Figure 5A shows a schematic example of using an ICS84326. 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=0,
therefore, the output frequency is 150MHz. It is recommended to
have one decouple capacitor per power pin. Each decoupling ca-
pacitor should be located as close as possible 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
CCA pin as possible.
X1
25MHz,18pF
C5
0.1u
R6
1K
VCCA
R2
50
VCC
+
-
R5
1K
VCC
R3
50
VCC=3.3V
U1
ICS84326
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
VCCO
VEE
PLL_SEL
VCC
VCCA
nc
XTAL2
XTAL1
MR
nc
F_SEL
VCCO
(U1,24)
C6
0.1u
C16
10u
VCC
(U1,13)
C2
18p
VCC
R7
24
R1
50
C11
0.1u
Zo = 50
R4
1K
(U 1,16)
C3
0.1u
C1
22p
相关PDF资料 |
PDF描述 |
|---|---|
| ICS84326AMLF | 150 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| ICS84327AM | 625 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| ICS84329AVLF | 700 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| ICS84329AVT | 700 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| ICS84329AYT | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS84326AMT | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL SERIAL ATTACHED SCSI CLOCK SYNTHESIZER/FANOUT BUFFER |
| ICS84327 | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS84327AM | 制造商:ICS 制造商全称:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS84327AMLF | 功能描述:IC SYNTHESIZER LVPECL 24SOIC 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 |
| ICS84327AMLFT | 功能描述:IC SYNTHESIZER LVPECL 24SOIC 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 |
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