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參數(shù)資料
| 型號： | CY28410 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Clock Generator for Intel Grantsdale Chipset |
| 中文描述： | 時鐘發(fā)生器英特爾Grantsdale芯片 |
| 文件頁數(shù)： | 8/18頁 |
| 文件大?。?/td> | 281K |
| 代理商： | CY28410 |
CY28410
Document #: 38-07593 Rev. *C
Page 8 of 18
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY28410ZXC | Paired Cable; Number of Conductors:24; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyvinylchloride (PVC); Number of Pairs:12; Conductor Material:Copper; Features:Traditional Analog Audio Applications RoHS Compliant: Yes |
| CY28410OC | Hook-Up Wire; Conductor Size AWG:22; No. Strands x Strand Size:7 x 30; Jacket Color:Gray; Approval Bodies:UL; Approval Categories:UL AWM Style 1213; Passes VW-1 Flame Test; Cable/Wire MIL SPEC:MIL-W-16878/4 Type E RoHS Compliant: Yes |
| CY28410ZC | Clock Generator for Intel Grantsdale Chipset |
| CY28410ZCT | Clock Generator for Intel Grantsdale Chipset |
| CY28410OCT | Clock Generator for Intel Grantsdale Chipset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY28410-2 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Intel Grantsdale Chipset |
| CY284108OXC | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Server, CK410B RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY284108OXCT | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Server, CK410B RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY284108ZXC | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Server, CK410B RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY284108ZXCT | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Server, CK410B RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
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