欢迎访问ic37.com |
会员登录 免费注册
发布采购

PCS5P23Z09DG-16-TR 参数 Datasheet PDF下载

PCS5P23Z09DG-16-TR图片预览
型号: PCS5P23Z09DG-16-TR
PDF下载: 下载PDF文件 查看货源
内容描述: 多路输出时序- SAFE™峰值EMI降低IC [Multiple Output Timing-Safe™ Peak EMI reduction IC]
分类和应用:
文件页数/大小: 14 页 / 657 K
品牌: PULSECORE [ PulseCore Semiconductor ]
 浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第1页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第2页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第4页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第5页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第6页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第7页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第8页浏览型号PCS5P23Z09DG-16-TR的Datasheet PDF文件第9页  
PCS5P23Z05D  
PCS5P23Z09D  
May 2007  
rev 0.2  
Spread Spectrum Frequency Generation  
reducing EMI are to use shielding, filtering, multi-layer  
PCBs etc. These methods are expensive. Spread  
spectrum clocking reduces the peak energy by reducing  
the Q factor of the clock. This is done by slowly  
modulating the clock frequency. The PCS5P23Z05D/09D  
uses the center modulation spread spectrum technique in  
which the modulated output frequency varies above and  
The clocks in digital systems are typically square waves  
with a 50% duty cycle and as frequencies increase the  
edge rates also get faster. Analysis shows that a square  
wave is composed of fundamental frequency and  
harmonics. The fundamental frequency and harmonics  
generate the energy peaks that become the source of  
EMI. Regulatory agencies test electronic equipment by  
measuring the amount of peak energy radiated from the  
equipment. In fact, the peak level allowed decreases as  
the frequency increases. The standard methods of  
below the reference frequency with  
a
specified  
modulation rate. With center modulation, the average  
frequency is same as the unmodulated frequency and  
there is no performance degradation  
Timing-Safe™ technology  
Timing-Safe™ technology is the ability to modulate a  
clock source with Spread Spectrum technology and  
maintain synchronization with any associated data path.  
Pin Configuration  
1
2
3
4
8
CLKOUT  
REF  
CLK1  
CLK2  
GND  
7
6
5
CLK4  
VDD  
PCS5P23Z05D  
CLK3  
1
16  
REF  
CLKOUT  
CLKA4  
CLKA1  
2
15  
CLKA2  
3
4
14  
13  
CLKA3  
VDD  
VDD  
PCS5P23Z09D  
12  
11  
10  
GND  
GND  
CLKB4  
5
6
7
CLKB1  
CLKB3  
S1  
CLKB2  
S2  
9
8
Multiple Output Timing-Safe™ Peak EMI Reduction IC  
3 of 14  
Notice: The information in this document is subject to change without notice.  
 复制成功!