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参数资料
| 型号： | ICS843021AGLF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 12/15页 |
| 文件大小： | 0K |
| 描述： | IC CLK GEN 1GIG LVPECL 8-TSSOP |
| 特色产品： | Gigabit Ethernet Clock Synthesizer |
| 标准包装： | 96 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 时钟/频率合成器，时钟发生器 |
| PLL： | 是 |
| 输入： | 晶体 |
| 输出： | LVPECL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:1 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 140MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1250 (CN2011-ZH PDF) |
| 其它名称： | 800-1133 800-1133-5 800-1133-ND 843021AGLF |
ICS843021AG REVISION D OCTOBER 12, 2010
6
2010 Integrated Device Technology, Inc.
ICS843021 Data Sheet
FEMTOCLOCK CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
Applications Information
Power Supply Filtering Technique
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter performance,
power supply isolation is required. The ICS843021 provides separate
power supplies to isolate any high switching noise from the outputs
to the internal PLL. VCC and VCCA should be individually connected
to the power supply plane through vias, and 0.01F bypass
capacitors should be used for each pin. Figure 1 illustrates this for a
generic VCC pin and also shows that VCCA requires that an additional
10
resistor along with a 10F bypass capacitor be connected to the
VCCA pin.
Figure 1. Power Supply Filtering
Crystal Input Interface
The ICS843021 has been characterized with 18pF parallel resonant
crystals. The capacitor values, C1 and C2, shown in Figure 2 below
were determined using a 25MHz, 18pF parallel resonant crystal and
were chosen to minimize the ppm error. The optimum C1 and C2
values can be slightly adjusted for different board layouts.
Figure 2. Crystal Input Interface
VCC
VCCA
3.3V
10
10F
.01F
XTAL_IN
XTAL_OUT
X1
18pF Parallel Crystal
C1
33pF
C2
27pF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843021AGLFT | 功能描述:IC CLK GENERATOR LVPECL 8-TSSOP 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™, FemtoClock™ 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 |
| ICS843021AGT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843021I-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR |
| ICS843022 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843022AG | 制造商:INT_DEV_TECH 功能描述: |
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