AD9511-VCOSLASHPCB datasheet(2/60 Pages) AD

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AD9511

Rev. A | Page 2 of 60

TABLE OF CONTENTS

Specifications..................................................................................... 4

PLL Characteristics ...................................................................... 4

Clock Inputs .................................................................................. 5

Clock Outputs ............................................................................... 6

Timing Characteristics ................................................................ 7

Clock Output Phase Noise .......................................................... 9

Clock Output Additive Time Jitter........................................... 12

PLL and Distribution Phase Noise and Spurious................... 14

Serial Control Port ..................................................................... 15

FUNCTION Pin ......................................................................... 15

STATUS Pin ................................................................................ 16

Power............................................................................................ 16

Timing Diagrams............................................................................ 17

Absolute Maximum Ratings.......................................................... 18

Thermal Characteristics ............................................................ 18

ESD Caution................................................................................ 18

Pin Configuration and Function Descriptions........................... 19

Terminology .................................................................................... 21

Typical Performance Characteristics ........................................... 22

Typical Modes of Operation.......................................................... 26

PLL with External VCXO/VCO Followed by Clock

Distribution................................................................................. 26

Clock Distribution Only............................................................ 26

PLL with External VCO and Band-Pass Filter Followed by

Clock Distribution...................................................................... 27

Functional Description .................................................................. 29

Overall.......................................................................................... 29

PLL Section ................................................................................. 29

PLL Reference Input—REFIN .............................................. 29

VCO/VCXO Clock Input—CLK2........................................ 29

PLL Reference Divider—R .................................................... 29

VCO/VCXO Feedback Divider—N (P, A, B) ..................... 29

A and B Counters................................................................... 30

Determining Values for P, A, B, and R ................................ 30

Phase Frequency Detector (PFD) and Charge Pump ....... 31

Antibacklash Pulse................................................................. 31

STATUS Pin ............................................................................ 31

PLL Digital Lock Detect........................................................ 31

PLL Analog Lock Detect ....................................................... 32

Loss of Reference.................................................................... 32

FUNCTION Pin ......................................................................... 32

RESETB: 58h<6:5> = 00b (Default)..................................... 32

SYNCB: 58h<6:5> = 01b ....................................................... 32

PDB: 58h<6:5> = 11b ............................................................ 33

Distribution Section................................................................... 33

CLK1 and CLK2 Clock Inputs.................................................. 33

Dividers........................................................................................ 33

Setting the Divide Ratio ........................................................ 33

Setting the Duty Cycle........................................................... 33

Divider Phase Offset.............................................................. 37

Delay Block ................................................................................. 38

Calculating the Delay ............................................................ 38

Outputs ........................................................................................ 38

Power-Down Modes .................................................................. 39

Chip Power-Down or Sleep Mode—PDB........................... 39

PLL Power-Down................................................................... 39

Distribution Power-Down .................................................... 39

Individual Clock Output Power-Down............................... 39

Individual Circuit Block Power-Down................................ 39

Reset Modes ................................................................................ 40

Power-On Reset—Start-Up Conditions when VS

is Applied................................................................................. 40

Asynchronous Reset via the FUNCTION Pin ................... 40

Soft Reset via the Serial Port................................................. 40

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