AD9525SLASHPCBZ datasheet(2/48 Pages) AD

2 / 48 page

AD9525

Data Sheet

Rev. 0 | Page 2 of 48

TABLE OF CONTENTS

Features .............................................................................................. 1

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

Functional Block Diagram .............................................................. 1

General Description......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Conditions..................................................................................... 3

Supply Current.............................................................................. 3

Power Dissipation......................................................................... 3

REFA and REFB Input Characteristics...................................... 4

REFC Input Characteristics ........................................................ 4

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

PLL Characteristics ...................................................................... 5

PLL Digital Lock Detect .............................................................. 6

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

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

Clock Output Absolute Time Jitter (Clock Generation

Using External 122.88 MHz VCXO).......................................... 8

Clock Output Absolute Time Jitter (Clock Generation

Using External 1475 MHz VCO) ............................................... 8

Clock Output Absolute Time Jitter (Clock Generation

Using External 2.05 GHz VCO) ................................................. 9

Clock Output Absolute Time Jitter (Clock Generation

Using External 3 GHz VCO) ...................................................... 9

Clock Output Additive Phase Noise (Distribution Only;

Clock Input to Distribution Output, Including VCO

Divider).......................................................................................... 9

PD, RESET, and REF_SEL Pins................................................ 10

STATUS and REF_MON Pins .................................................. 10

Serial Control Port ..................................................................... 11

Absolute Maximum Ratings ......................................................... 12

Thermal Resistance.................................................................... 12

ESD Caution................................................................................ 12

Pin Configuration and Function Descriptions........................... 13

Typical Performance Characteristics ........................................... 15

Terminology.................................................................................... 18

Detailed Block Diagram ................................................................ 19

Theory of Operation ...................................................................... 20

Configuration of the PLL .......................................................... 20

Clock Distribution ..................................................................... 23

SYNC_OUT ................................................................................ 23

Reset Modes ................................................................................ 25

Power-Down Modes .................................................................. 26

Serial Control Port ......................................................................... 27

Pin Descriptions ......................................................................... 27

General Operation of Serial Control Port............................... 27

The Instruction Word (16 Bits)................................................ 28

MSB/LSB First Transfers ........................................................... 28

Control Registers ............................................................................ 31

Control Register Map Overview .............................................. 31

Applications Information .............................................................. 45

Frequency Planning Using the AD9525.................................. 45

Using the AD9525 Outputs for ADC Clock Applications.... 45

LVPECL Clock Distribution..................................................... 46

SYNC_OUT Distribution ......................................................... 46

Outline Dimensions....................................................................... 47

Ordering Guide............................................................................... 47

REVISION HISTORY

10/12—Revision 0: Initial Version

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