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GS4915 Datasheet(PDF) 4 Page - Gennum Corporation |
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GS4915 Datasheet(HTML) 4 Page - Gennum Corporation |
4 / 27 page GS4915 ClockCleaner™ Data Sheet 39145 - 5 June 2009 4 of 27 Contents Key Features........................................................................................................................................................1 Applications.........................................................................................................................................................1 Description...........................................................................................................................................................1 Functional Block Diagram ..............................................................................................................................2 Revision History .................................................................................................................................................3 1. Pin Out...............................................................................................................................................................5 1.1 Pin Assignment ..................................................................................................................................5 1.2 Pin Descriptions ................................................................................................................................6 2. Electrical Characteristics ............................................................................................................................9 2.1 Absolute Maximum Ratings ..........................................................................................................9 2.2 DC Electrical Characteristics ........................................................................................................9 2.3 AC Electrical Characteristics ..................................................................................................... 10 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 Solder Reflow Profiles .................................................................................................................. 25 6.3 Recommended PCB Footprint ................................................................................................... 26 6.4 Packaging Data ............................................................................................................................... 26 6.5 Ordering Information ................................................................................................................... 26 |
Número de pieza similar - GS4915_09 |
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Descripción similar - GS4915_09 |
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