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參數(shù)資料
| 型號(hào)： | ICS8430DY-01T |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 500 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 181K |
| 代理商： | ICS8430DY-01T |
8430DY-01
www.icst.com/products/hiperclocks.html
REV. A FEBRUARY 7, 2003
9
Integrated
Circuit
Systems, Inc.
ICS8430-01
500MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
LVPECL FREQUENCY SYNTHESIZER
The schematic of the ICS8430-01 layout example used in
this layout guideline is shown in
Figure 5A. The ICS8430-01
recommended PCB board layout for this example is shown in
Figure 5B. This layout example is used as a general guideline.
LAYOUT GUIDELINE
FIGURE 5A. SCHEMATIC OF RECOMMENDED LAYOUT
XTAL_SEL
S_DATA
C11
0.1u
R3
50
IN+
C14
0.1u
Termination A
R7
10
R2
84
IN+
R2
50
TEST
MR
R3
125
TL1
Zo = 50 Ohm
Termination B
(Not shown in
the layout)
S_CLOCK
FO
U
T
N
C15
0.1u
FO
U
T
R1
50
VC
C
REF_IN
IN-
VCC
IN-
VC
C
R4
84
X1
TL2
Zo = 50 Ohm
R1
125
U1
8430-01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
32
31
30
29
28
27
26
25
M5
M6
M7
M8
N0
N1
N2
VEE
TEST
VC
C
FO
U
T
1
nFO
U
T1
V
CCO
FO
U
T
0
nFO
U
T0
VEE
MR
S_CLOCK
S_DATA
S_LOAD
VCCA
nXTAL_SEL
TEST_CLK
XTAL1
M4
M3
M2
M1
M0
VC
O
_
SEL
nP_LO
AD
XTAL2
C16
10u
S_LOAD
VCC0
The clock layout topology shown below is a typical termina-
tion for LVPECL outputs. The two different layouts mentioned
are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, terminat-
ing resistors (DC current path to ground) or current sources
must be used for functionality. These outputs are designed to
FIGURE 4B. LVPECL OUTPUT TERMINATION
3.3V
F
OUT
F
IN
5
2 Zo
Z
o
5
2
Z
o
3
2
Z
o
3
2
Z
o = 50
Z
o = 50
FIGURE 4A. LVPECL OUTPUT TERMINATION
RTT =
1
(V
OH + VOL / VCC –2) –2
Z
o
50
50
RTT
V
CC - 2V
F
IN
F
OUT
drive 50
transmission lines. Matched impedance techniques
should be used to maximize operating frequency and minimize
signal distortion.
Figures 4A and 4B show two different layouts
which are recommended only as guidelines. Other suitable clock
layouts may exist and it would be recommended that the board
designers simulate to guarantee compatibility across all printed
circuit and clock component process variations.
TERMINATION FOR LVPECL OUTPUTS
Z
o = 50
Z
o = 50
The layout in the actual system will depend on the selected
component types, the density of the components, the density
of the traces, and the stack up of the P.C. board.
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PDF描述 |
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| ICS8430DY-111LF | 8430 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8430DY-111T | 8430 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8430DY-111LFT | 8430 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8430DY-111T | 8430 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8430DY-11LF | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS8430DY-111 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, LOW JITTER DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430DY-111LF | 功能描述:IC SYNTHESIZER DUAL 32-LQFP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS8430DY-111LFT | 功能描述:IC SYNTHESIZER DUAL 32-LQFP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS8430DY-111T | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, LOW JITTER DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430I-61 | 制造商:ICS 制造商全稱:ICS 功能描述:500MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
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