AD9518-2 datasheet(2/64 Pages) AD

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AD9518-2

Data Sheet

Rev. C | Page 2 of 64

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 .................................................................................. 6

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

Timing Characteristics ................................................................ 6

Clock Output Additive Phase Noise (Distribution Only;

VCO Divider Not Used).............................................................. 7

Clock Output Absolute Phase Noise (Internal VCO Used).... 7

Clock Output Absolute Time Jitter (Clock Generation

Using Internal VCO).................................................................... 8

Clock Output Absolute Time Jitter (Clock Cleanup Using

Internal VCO)............................................................................... 8

Clock Output Absolute Time Jitter (Clock Generation

Using External VCXO) ................................................................ 8

Clock Output Additive Time Jitter (VCO Divider

Not Used)....................................................................................... 9

Clock Output Additive Time Jitter (VCO Divider Used) ....... 9

Serial Control Port ..................................................................... 10

PD, SYNC, and RESET Pins ..................................................... 10

LD, STATUS, and REFMON Pins............................................ 11

Power Dissipation....................................................................... 11

Timing Diagrams............................................................................ 12

Absolute Maximum Ratings.......................................................... 13

Thermal Resistance.................................................................... 13

ESD Caution................................................................................ 13

Pin Configuration and Function Descriptions........................... 14

Typical Performance Characteristics ........................................... 16

Terminology.................................................................................... 20

Detailed Block Diagram ................................................................ 21

Theory of Operation ...................................................................... 22

Operational Configurations...................................................... 22

Digital Lock Detect (DLD) ....................................................... 30

Clock Distribution ..................................................................... 34

Reset Modes ................................................................................ 38

Power-Down Modes .................................................................. 38

Serial Control Port ......................................................................... 40

Serial Control Port Pin Descriptions....................................... 40

General Operation of Serial Control Port............................... 40

The Instruction Word (16 Bits)................................................ 41

MSB/LSB First Transfers ........................................................... 41

Thermal Performance.................................................................... 44

Control Registers............................................................................ 45

Control Register Map Overview .............................................. 45

Control Register Map Descriptions ......................................... 47

Applications Information .............................................................. 59

Frequency Planning Using the AD9518.................................. 59

Using the AD9518 Outputs for ADC Clock Applications.... 59

LVPECL Clock Distribution..................................................... 60

Outline Dimensions....................................................................... 61

Ordering Guide .......................................................................... 61

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