- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67689 > ICS8430DYI-01T (INTEGRATED DEVICE TECHNOLOGY INC) 500 MHz, OTHER CLOCK GENERATOR, PQFP32 PDF資料下載
參數(shù)資料
| 型號(hào)： | ICS8430DYI-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)： | 15/16頁 |
| 文件大小： | 179K |
| 代理商： | ICS8430DYI-01T |
8430DYI-01
www.icst.com/products/hiperclocks.html
REV. A FEBRUARY 10, 2003
8
Integrated
Circuit
Systems, Inc.
ICS8430I-01
500MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
LVPECL FREQUENCY SYNTHESIZER
The ICS8430I-01 features an internal oscillator that uses an
external quartz crystal as the source of its reference frequency.
A 16MHz crystal divided by 16 before being sent to the phase
detector provides the reference frequency. The oscillator is a
series resonant, multi-vibrator type design. This design provides
better stability and eliminates the need for large on chip capacitors.
Though a series resonant crystal is preferred, a parallel resonant
crystal can be used. A parallel resonant mode crystal used in a
series resonant circuit will exhibit a frequency of oscillation a few
hundred ppm lower than specified. A few hundred ppm translates
to KHz inaccuracy. In general computing applications this level
of inaccuracy is irrelevant. If better ppm accuracy is required, an
external capacitor can be added to a parallel resonant crystal in
series to pin 24.
Figure 3A shows how to interface with a crystal.
Figures 3A, 3B, and 3C show various crystal parameters which
are recommended only as guidelines.
Figure 3A shows how to
interface a capacitor with a parallel resonant crystal.
Figure 3B
shows the capacitor value needed for the optimum ppm perfor-
FIGURE 3B. Recommended tuning capacitance for various
parallel resonant crystals.
FIGURE 3C. Recommended tuning capacitance for various
parallel resonant crystals.
14.318
15.000
16.667
24.000
19.440
20.000
0
10
20
30
40
50
60
14
15
16
17
18
19
20
21
22
23
24
25
Crystal Frequency (MHz)
S
e
ri
es
C
apac
itor
,C
1
(
p
F
)
-100
-80
-60
-40
-20
0
20
40
60
80
100
0
1020
30
4050
60
Series Capacitor, C1 (pF)
F
requency
A
ccur
a
cy
(
ppm
)
19.44MHz
16MHz
15.00MHz
CRYSTAL INPUT AND OSCILLATOR INTERFACE
APPLICATION INFORMATION
FIGURE 3A. CRYSTAL INTERFACE
Optional
XTAL2
(Pin 25, LQFP)
XTAL1
(Pin 24, LQFP)
ICS8430I-01
mance over various parallel resonant crystals.
Figure 3C shows
the recommended tuning capacitance for various parallel reso-
nant crystals.
As in any high speed analog circuitry, the power supply pins
are vulnerable to random noise. The ICS8430I-01 provides
separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. V
CC, VCCA and VCCO
should be individually connected to the power supply
plane through vias, and bypass capacitors should be
used for each pin. To achieve optimum jitter performance,
power supply isolation is required.
Figure 2 illustrates how
a 10
resistor along with a 10F and a .01F bypass
capacitor should be connected to each V
CCA pin.
FIGURE 2. POWER SUPPLY FILTERING
10
V
CCA
10
F
.01
F
3.3V
.01
F
V
CC
POWER SUPPLY FILTERING TECHNIQUES
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS8430DYI-11 | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS8430DYI-11LFT | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS8430DYI-11LF | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS8430EY-11LFT | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS8430EY-11LF | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| ICS8430I-71B | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL INTERFACE / LVCMOS-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8430S07AKILF | 功能描述:IC CLK GENERATOR PLL 32VFQFN RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 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 |
| ICS8430S07AKILFT | 功能描述:IC CLK GENERATOR PLL 32VFQFN RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 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 |
| ICS8430S07I | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Clock Generator for Cavium Processors |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。