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| 型号： | CY28410ZXC |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 16/17页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK CK410GRANTSDALE 56TSSOP |
| 标准包装： | 35 |
| 类型： | 时钟/频率发生器 |
| PLL： | 是 |
| 主要目的： | Intel CPU 服务器 |
| 输入： | 晶体 |
| 输出： | HCSL，LVCMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:19 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 266MHz |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-TFSOP（0.240"，6.10mm 宽） |
| 供应商设备封装： | 56-TSSOP |
| 包装： | 管件 |
| 其它名称： | SLCY28410ZXC |
CY28410
........................Document #: 38-07593 Rev. *C Page 8 of 17
Calculating Load Capacitors
In addition to the standard external trim capacitors, trace
capacitance and pin capacitance must also be considered to
correctly calculate crystal loading. As mentioned previously,
the capacitance on each side of the crystal is in series with the
crystal. This means the total capacitance on each side of the
crystal must be twice the specified crystal load capacitance
(CL). While the capacitance on each side of the crystal is in
series with the crystal, trim capacitors (Ce1,Ce2) should be
calculated to provide equal capacitive loading on both sides.
As mentioned previously, the capacitance on each side of the
crystal is in series with the crystal. This mean the total capac-
itance on each side of the crystal must be twice the specified
load capacitance (CL). While the capacitance on each side of
the crystal is in series with the crystal, trim capac-
itors(Ce1,Ce2) should be calculated to provide equal capaci-
tance loading on both sides.
Use the following formulas to calculate the trim capacitor
values fro Ce1 and Ce2.
Figure 1. Crystal Capacitive Clarification
XTAL
Ce2
Ce1
Cs1
Cs2
X1
X2
Ci1
Ci2
Clock Chip
Trace
2.8pF
Trim
33pF
Pin
3 to 6p
Figure 2. Crystal Loading Example
Load Capacitance (each side)
Total Capacitance (as seen by the crystal)
Ce = 2 * CL – (Cs + Ci)
Ce1 + Cs1 + Ci1
1
+
Ce2 + Cs2 + Ci2
1
()
1
=
CLe
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CY28410ZXC-2 | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:Clock Generator for Intel Grantsdale Chipset |
| CY28410ZXC-2T | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:Clock Generator for Intel Grantsdale Chipset |
| CY28410ZXCT | 功能描述:时钟发生器及支持产品 SysClk Intel Lakeprt & Grantsdale Chipset RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| CY28411 | 制造商:SPECTRALINEAR 制造商全称:SPECTRALINEAR 功能描述:Clock Generator for Intel Alviso Chipset |
| CY28411-1 | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:Clock Generator for Intel Alviso Chipset |
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