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参数资料
| 型号： | ICS842023BGLF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 14/15页 |
| 文件大小： | 0K |
| 描述： | IC CLK GEN ETHERNET 25MHZ 8TSSOP |
| 标准包装： | 96 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 时钟/频率发生器 |
| PLL： | 是 |
| 主要目的： | 以太网 |
| 输入： | 晶体 |
| 输出： | HSTL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:1 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 340MHz |
| 电源电压： | 2.375 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
ICS842023
FEMTOCLOCKCRYSTAL-TO-HSTL CLOCK GENERATOR
IDT / ICS HSTL CLOCK GENERATOR
8
ICS842023BG REV. A NOVEMBER 2, 2012
Application Information
Crystal Input Interface
The ICS842023 has been characterized with 18pF parallel
resonant crystals. The capacitor values, C1 and C2, shown in
Figure 1 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 1. Crystal Input Interface
Power Supply Filtering Technique
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter perform-
ance, power supply isolation is required. The ICS842023 provides
separate power supplies to isolate any high switching noise from
the outputs to the internal PLL. VDD and VDDA should be
individually connected to the power supply plane through vias, and
0.01F bypass capacitors should be used for each pin. Figure 3
illustrates this for a generic VDD pin and also shows that VDDA
requires that an additional 10
resistor along with a 10F bypass
capacitor be connected to the VDDA pin.
Figure 3. Power Supply Filtering
XTAL_IN
XTAL_OUT
X1
18pF Parallel Crystal
C1
22pF
C2
22pF
VDD
VDDA
3.3V or 2.5V
10
Ω
10F
.01F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS842023BGLFT | 功能描述:IC CLK GEN ETHERNET 25MHZ 8TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 专用 系列:HiPerClockS™, FemtoClock™ 标准包装:1,500 系列:- 类型:时钟缓冲器/驱动器 PLL:是 主要目的:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 电源电压:3.3V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:带卷 (TR) 其它名称:93786AFT |
| ICS842023I | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO- HSTL CLOCK GENERATOR |
| ICS842031AGI-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO- HSTL CLOCK GENERATOR |
| ICS842031AGI-01T | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO- HSTL CLOCK GENERATOR |
| ICS842031I-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO- HSTL CLOCK GENERATOR |
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