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參數(shù)資料
| 型號： | SI5356A-AXXXXX-GMR |
| 廠商： | SILICON LABORATORIES |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 200 MHz, PROC SPECIFIC CLOCK GENERATOR, QCC24 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, MO-220VGGD-8, QFN-24 |
| 文件頁數(shù)： | 7/26頁 |
| 文件大?。?/td> | 345K |
| 代理商： | SI5356A-AXXXXX-GMR |
Si5356
Preliminary Rev. 0.3
15
3.11. Spread Spectrum
To reduce electro magnetic interference (EMI), the
Si5356 supports spread spectrum modulation. The
output clock frequencies can be modulated to spread
energy across a broader range of frequencies, lowering
system EMI. The modulation rate is the time required to
transition
from
the
maximum
spread
spectrum
frequency to the minimum spread spectrum frequency
and then back to the maximum frequency.
The Si5356 implements spread spectrum using
patented MultiSynth technology to achieve previously
unattainable precision in both modulation rate and
spreading magnitude as shown in Figure 9. This
enables the Si5356 to provide “triple A” spread
spectrum. Spread spectrum can be applied to any
output clock, any clock frequency, and any spread
amount. Spread spectrum can be enabled or disabled
on a per-bank basis. The device supports center spread
(±0.1% to ±5%) and down spread (–0.1% to –5%). In
addition, the device has extensive on-chip voltage
regulation such that power supply variation does not
influence
the
device’s
spread
spectrum
clock
waveforms.
The programming of Spread Spectrum is made easy by
using the Si5356 Programmer. Spread spectrum on all
the outputs can be enabled or disabled using the
SSC_DIS pin, or independently for each output bank
through the I2C interface.
Figure 9. Configurable Spread Spectrum
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-10%
-8%
-6%
-4%
-2%
0%
2%
4%
6%
8%
10%
Relative Frequency
Re
lat
iv
eP
o
wer
(
d
B
)
±1.0%
±2.5%
±5.0%
No spread
相關(guān)PDF資料 |
PDF描述 |
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| SI5369B-C-GQR | 808 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP100 |
| SI5369B-C-GQ | 808 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP100 |
| SI5369C-C-GQ | 346 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP100 |
| SI5369D-C-GQ | 243 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP100 |
| SI5369D-C-GQR | 243 MHz, PROC SPECIFIC CLOCK GENERATOR, PQFP100 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| Si5356A-B-GM | 功能描述:時鐘緩沖器 I2C-prog 8-out CMOS Clk gen 1-200MHz RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| Si5356A-B-GMR | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 I2C CMOS Clk Gen 1-200MHz Blank NVM 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56 |
| SI5356A-BXXXXX-GM | 制造商:Silicon Laboratories Inc 功能描述:IC CLK GENERATOR I2C 24QFN |
| Si5356-EVB | 功能描述:時鐘和定時器開發(fā)工具 Si5356 Eval Board RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| Si535x-20QFN-EVB | 功能描述:時鐘和定時器開發(fā)工具 Si5350/51 Eval Board 20-QFN 8-output RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
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