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AD9522-2BCPZ датащи(PDF) 2 Page - Analog Devices |
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AD9522-2BCPZ датащи(HTML) 2 Page - Analog Devices |
2 / 84 page AD9522-2 Rev. 0 | Page 2 of 84 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 3 Specifications..................................................................................... 4 Power Supply Requirements ....................................................... 4 PLL Characteristics ...................................................................... 4 Clock Inputs .................................................................................. 7 Clock Outputs ............................................................................... 7 Timing Characteristics ................................................................ 8 Timing Diagrams ..................................................................... 8 Clock Output Additive Phase Noise (Distribution Only; VCO Divider Not Used) .............................................................. 9 Clock Output Absolute Phase Noise (Internal VCO Used).. 10 Clock Output Absolute Time Jitter (Clock Generation Using Internal VCO) ............................................................................. 10 Clock Output Absolute Time Jitter (Clock Cleanup Using Internal VCO).................................................................. 10 Clock Output Absolute Time Jitter (Clock Generation Using External VCXO) ......................................... 11 Clock Output Additive Time Jitter (VCO Divider Not Used) .......................................................... 11 Clock Output Additive Time Jitter (VCO Divider Used) ..... 12 Serial Control Port—SPI Mode ................................................ 12 Serial Control Port—I2C Mode ................................................ 13 PD, SYNC, and RESET Pins ..................................................... 14 Serial Port Setup Pins: SP1, SP0 ............................................... 14 LD, STATUS, and REFMON Pins............................................ 14 Power Dissipation....................................................................... 15 Absolute Maximum Ratings.......................................................... 16 Thermal Resistance .................................................................... 16 ESD Caution................................................................................ 16 Pin Configuration and Function Descriptions........................... 17 Typical Performance Characteristics ........................................... 20 Terminology .................................................................................... 25 Detailed Block Diagram ................................................................ 26 Theory of Operation ...................................................................... 27 Operational Configurations...................................................... 27 Mode 0: Internal VCO and Clock Distribution ................. 27 Mode 1: Clock Distribution or External VCO < 1600 MHz .................................................................. 29 Mode 2: High Frequency Clock Distribution— CLK or External VCO > 1600 MHz .................................... 31 Phase-Locked Loop (PLL) .................................................... 33 Configuration of the PLL ...................................................... 33 Phase Frequency Detector (PFD) ........................................ 33 Charge Pump (CP)................................................................. 34 On-Chip VCO ........................................................................ 34 PLL External Loop Filter....................................................... 34 PLL Reference Inputs............................................................. 34 Reference Switchover............................................................. 35 Reference Divider R............................................................... 35 VCO/VCXO Feedback Divider N: P, A, B, R ..................... 35 Digital Lock Detect (DLD) ................................................... 37 Analog Lock Detect (ALD)................................................... 37 Current Source Digital Lock Detect (CSDLD) .................. 37 External VCXO/VCO Clock Input (CLK/CLK) ................ 38 Holdover.................................................................................. 38 External/Manual Holdover Mode........................................ 38 Automatic/Internal Holdover Mode.................................... 38 Frequency Status Monitors ................................................... 40 VCO Calibration .................................................................... 41 Zero Delay Operation................................................................ 42 Internal Zero Delay Mode..................................................... 42 External Zero Delay Mode.................................................... 42 Clock Distribution ..................................................................... 43 Operation Modes ................................................................... 43 Clock Frequency Division..................................................... 44 VCO Divider........................................................................... 44 Channel Dividers ................................................................... 44 Synchronizing the Outputs—SYNC Function ................... 46 LVDS Output Drivers ............................................................ 47 CMOS Output Drivers .......................................................... 48 |
Аналогичный номер детали - AD9522-2BCPZ |
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Аналогичное описание - AD9522-2BCPZ |
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