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參數(shù)資料
| 型號： | ICS84326AM |
| 英文描述： | CRYSTAL-TO-3.3V LVPECL SERIAL ATTACHED SCSI CLOCK SYNTHESIZER/FANOUT BUFFER |
| 中文描述： | 水晶到3.3的LVPECL串行連接SCSI時鐘合成器/扇出緩沖器 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 171K |
| 代理商： | ICS84326AM |
84326AM
www.icst.com/products/hiperclocks.html
REV. A MARCH 10, 2003
9
ICS84326
C
RYSTAL
-
TO
-3.3V LVPECL
S
ERIAL
A
TTACHED
SCSI C
LOCK
S
YNTHESIZER
/F
ANOUT
B
UFFER
PRELIMINARY
F
IGURE
5A. ICS84326 S
CHEMATIC
E
XAMPLE
C
RYSTAL
I
NPUT
I
NTERFACE
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. C
RYSTAL
I
NPU
t I
NTERFACE
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.
S
CHEMATIC
E
XAMPLE
Figure 5Ashows 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.
25MHz,1X1
C5
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
nQ1
nQ2
nQ2
nQ3
nQ4
nQ5
VCCO
PLL_SEL
VCCA
nc
XTAL2
nc
VCCO
(U1,24)
C6
C16
VCC
(U1,13)
C2
18p
VCC
R7
24
R1
50
C11
Zo = 50
Zo = 50
R4
1K
(U1,16)
C3
C1
22p
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ICS84326AMT | 制造商:ICS 制造商全稱:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL SERIAL ATTACHED SCSI CLOCK SYNTHESIZER/FANOUT BUFFER |
| ICS84327 | 制造商:ICS 制造商全稱:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
| ICS84327AM | 制造商:ICS 制造商全稱: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 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™ 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| ICS84327AMLFT | 功能描述:IC SYNTHESIZER LVPECL 24SOIC RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:HiPerClockS™ 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
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