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GS4915 参数 Datasheet PDF下载

GS4915图片预览

型号：	GS4915
PDF下载：	下载PDF文件查看货源
内容描述：	ClockCleaner ™ [ClockCleaner⑩]
分类和应用：
文件页数/大小：	26 页 / 650 K
品牌：	GENNUM [ GENNUM CORPORATION ]

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GS4915 Data Sheet

Contents

Key Features .................................................................................................................1

Applications...................................................................................................................1

Description ....................................................................................................................1

Functional Block Diagram .............................................................................................2

1. Pin Out ......................................................................................................................4

1.1 Pin Assignment ...............................................................................................4

1.2 Pin Descriptions ..............................................................................................5

2. Electrical Characteristics ...........................................................................................8

2.1 Absolute Maximum Ratings ............................................................................8

2.2 DC Electrical Characteristics ..........................................................................8

2.3 AC Electrical Characteristics .........................................................................10

2.4 Solder Reflow Profiles ...................................................................................11

3. Detailed Description ................................................................................................12

3.1 Functional Overview .....................................................................................12

3.2 Clock Inputs ..................................................................................................12

3.2.1 Differential Clock Input.........................................................................13

3.2.2 Single-Ended Clock Input ....................................................................13

3.2.3 Input Clock Selection ...........................................................................13

3.2.4 Unused Clock Inputs............................................................................13

3.3 Clock Cleaning PLL ......................................................................................13

3.3.1 Phase Detector ....................................................................................14

3.3.2 Charge Pump.......................................................................................14

3.3.3 Loop Filter ............................................................................................14

3.3.4 External VCO.......................................................................................15

3.4 Modes of Operation ......................................................................................15

3.4.1 Frequency Modes ................................................................................15

3.4.2 Bypass Modes .....................................................................................17

3.5 Output Clock Frequency and Jitter ...............................................................18

3.6 Output Skew .................................................................................................20

3.7 Clock Outputs ...............................................................................................21

3.7.1 Differential Clock Output ......................................................................21

3.7.2 Single-Ended Clock Output .................................................................21

3.8 Device Reset .................................................................................................21

3.8.1 Hardware Reset ...................................................................................21

4. Typical Application Circuit .......................................................................................22

5. References & Relevant Standards ..........................................................................23

6. Package & Ordering Information .............................................................................24

6.1 Package Dimensions ....................................................................................24

6.2 Recommended PCB Footprint ......................................................................25

6.3 Packaging Data .............................................................................................25

6.4 Ordering Information .....................................................................................25

7. Revision History ......................................................................................................26

39145 - 3

November 2007

3 of 26

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