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参数资料
| 型号： | ICS8432DYI-01LF |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32 |
| 文件页数： | 17/17页 |
| 文件大小： | 185K |
| 代理商： | ICS8432DYI-01LF |
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
相关PDF资料 |
PDF描述 |
|---|---|
| ICS8432DYI-01LFT | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS8432DYI-101 | 制造商:ICS 制造商全称: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 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS8432DYI-101LFT | 功能描述:IC SYNTHESIZER 700MHZ 32-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS8432DYI-101T | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8432I-101 | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, DIFFERENTIAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
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