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参数资料
| 型号： | ICS84329AYT |
| 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： | 2/19页 |
| 文件大小： | 279K |
| 代理商： | ICS84329AYT |
84329AV
www.icst.com/products/hiperclocks.html
REV. D DECEMBER 15, 2004
10
Integrated
Circuit
Systems, Inc.
ICS84329
700MHZ, LOW JITTER, CRYSTAL-TO-3.3V
DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
The ICS84329 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
quartz crystal in series to XTAL_IN.
Figure 5A shows how to
interface with a crystal.
Figures 5A and 5B show various crystal parameters which are
recommended only as guidelines.
Figure 5A shows how to inter-
face a capacitor with a parallel resonant crystal.
Figure 5B shows
the capacitor value needed for the optimum ppm performance
over various series resonant crystal frequencies. For IA64/32
platforms which required a Raltron Parallel Resonant Quartz
crystal part #AS-16.66-18-SMD-T-M1, a 7pF series capacitor can
be used to better the ppm accuracy.
FIGURE 5A. CRYSTAL INTERFACE
NOTE: For crystal frequencies higher than 17MHz,
a series tuning capacitor is required for proper operation.
XTAL_OUT
XTAL_IN
ICS84329
FIGURE 5B. Recommended tuning capacitance for various series
resonant crystals.
CRYSTAL INPUT AND OSCILLATOR INTERFACE
10.000
14.318
12.000
24.000
20.000
16.000
0
5
10
15
20
25
30
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Series Resonant Crystal Frequency (MHz)
Ser
ies
Capac
itor
(
pf)
相关PDF资料 |
PDF描述 |
|---|---|
| ICS84329AVLFT | 700 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| ICS84329AYLFT | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS84329BV-01T | 700 MHz, OTHER CLOCK GENERATOR, PQCC28 |
| ICS84329BM-01 | 700 MHz, OTHER CLOCK GENERATOR, PDSO28 |
| ICS84329BM-01T | 700 MHz, OTHER CLOCK GENERATOR, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS84329B | 制造商:ICS 制造商全称:ICS 功能描述:700MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84329BM-01 | 制造商:Integrated Device Technology Inc 功能描述:IC SYNTHESIZER 700MHZ 28-SOIC |
| ICS84329BM-01LF | 功能描述:IC SYNTHESIZER 700MHZ 28-SOIC 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 |
| ICS84329BM-01LFT | 功能描述:IC SYNTHESIZER 700MHZ 28-SOIC 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 |
| ICS84329BM-01T | 制造商:Integrated Device Technology Inc 功能描述:IC SYNTHESIZER 700MHZ 28-SOIC |
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