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參數(shù)資料
| 型號(hào)： | ICS84025 |
| 英文描述： | CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
| 中文描述： | 水晶到的LVCMOS / LVTTL頻率合成扇出緩沖器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 143K |
| 代理商： | ICS84025 |
84025EM
www.icst.com/products/hiperclocks.html
REV. A APRIL 16, 2003
8
ICS84025
C
RYSTAL
-
TO
-LVCMOS / LVTTL
F
REQUENCY
S
YNTHESIZER
WITH
F
ANOUT
B
UFFER
PRELIMINARY
F
IGURE
4A. ICS84025 S
CHEMATIC
E
XAMPLE
S
CHEMATIC
E
XAMPLE
Figure 4Ashows 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
F_SEL0
RD4
SP
C7
(U1,17)
C3
SP = Spare, Not Installed
F_SEL1
F_SEL0
RU3
1K
C2
18p
RD3
SP
VDD
C16
10u
VDD
C6
VDDA
PLL_SEL
C5
X1
25MHz,18pF
R6
43
RU4
1K
(U1,13)
PLL_SEL
(U1,5)
C1
22p
Zo = 50
(U1,1)
RU2
1K
C11
0.1u
R7
10
C4
(U1,9)
Zo = 50
VDD=3.3V
U1
ICS84025
1
2
3
4
5
6
7
8
9
10
11
15
16
17
18
19
20
21
22
23
24
14
12
13
VDDO
GQ0
Q1
VDDO
Q2
GQ3
VDDO
Q4
GND
GND
PLL_SEL
VDD
VDDA
GND
XTAL2
XTAL1
MR
F_SEL1
F_SEL0
NC
Q5
VDDO
VDD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS84025EM | 制造商:ICS 制造商全稱:ICS 功能描述:CRYSTAL-TO-LVCMOS / LVTTL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
| ICS84025EMT | 制造商:ICS 制造商全稱: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 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| ICS840271BGILFT | 功能描述:IC TRANSLATOR ETHER SYNC 8TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| ICS840271I | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:SYNCHRONOUS ETHERNET FREQUENCY TRANSLATOR |
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