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參數(shù)資料
| 型號(hào)： | ICS8432DYI-01LFT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32 |
| 文件頁數(shù)： | 17/17頁 |
| 文件大?。?/td> | 185K |
| 代理商： | ICS8432DYI-01LFT |
8432DYI-01
www.icst.com/products/hiperclocks.html
REV. B FEBRUARY 7, 2003
9
Integrated
Circuit
Systems, Inc.
ICS8432I-01
700MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
LVPECL FREQUENCY SYNTHESIZER
The ICS8432I-01 features an internal oscillator that uses an
external quartz crystal as the source of its 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 an 18pF parallel resonant crystal.
Fig-
ure 3B shows the capacitor value needed for the optimum ppm
performance over various parallel resonant crystal frequencies.
Figure 3C shows the recommended tuning capacitance for
various parallel resonant crystals.
FIGURE 3A. CRYSTAL INTERFACE
Optional
XTAL2
(Pin 25, LQFP)
XTAL1
(Pin 24, LQFP)
ICS8432I-01
FIGURE 3B. Recommended tuning capacitance for various 18pF
parallel resonant crystals.
FIGURE 3C. Recommended tuning capacitance for various 18pF
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
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| ICS8432DYI-101LFT | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8432DYI-101LF | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8432DYI-101T | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS84330AM-01 | 700 MHz, OTHER CLOCK GENERATOR, PDSO28 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS8432DYI-101 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8432DYI-101LF | 功能描述:IC SYNTHESIZER 700MHZ 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 |
| ICS8432DYI-101LFT | 功能描述:IC SYNTHESIZER 700MHZ 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 |
| ICS8432DYI-101T | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8432I-101 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
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