AD9523 datasheet(2/60 Pages) AD

Part #	AD9523

Description	Jitter Cleaner and Clock Generator

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AD9523

Data Sheet

Rev. D | Page 2 of 60

TABLE OF CONTENTS

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

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

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

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

Revision History ............................................................................... 3

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

Conditions ..................................................................................... 4

Supply Current.............................................................................. 4

Power Dissipation......................................................................... 5

REFA, REFA, REFB, REFB, OSC_IN, OSC_IN, and ZD_IN,

ZD_IN Input Characteristics ...................................................... 5

OSC_CTRL Output Characteristics .......................................... 6

REF_TEST Input Characteristics ............................................... 6

PLL1 Characteristics .................................................................... 6

PLL1 Output Characteristics ...................................................... 6

Distribution Output Characteristics (OUT0, OUT0 to

OUT13, OUT13) .......................................................................... 7

Timing Alignment Characteristics ............................................ 8

Jitter and Noise Characteristics .................................................. 8

PLL2 Characteristics .................................................................... 8

Logic Input Pins—PD, EEPROM_SEL, REF_SEL, RESET,

SYNC.............................................................................................. 9

Status Output Pins—STATUS1, STATUS0 ............................... 9

Serial Control Port—SPI Mode .................................................. 9

Serial Control Port—I²C Mode ................................................ 10

Absolute Maximum Ratings.......................................................... 11

Thermal Resistance .................................................................... 11

ESD Caution................................................................................ 11

Pin Configuration and Function Descriptions........................... 12

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

Input/Output Termination Recommendations .......................... 17

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

Theory of Operation ...................................................................... 19

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

Overview ..................................................................................... 19

Component Blocks—Input PLL (PLL1).................................. 20

Component Blocks—Output PLL (PLL2) .............................. 22

Clock Distribution ..................................................................... 24

Zero Delay Operation................................................................ 26

Lock Detect ................................................................................. 26

Reset Modes ................................................................................ 26

Power-Down Mode .................................................................... 27

Power Supply Sequencing ......................................................... 27

Serial Control Port ......................................................................... 28

SPI/I²C Port Selection................................................................ 28

I²C Serial Port Operation .......................................................... 28

SPI Serial Port Operation .......................................................... 31

SPI Instruction Word (16 Bits)................................................. 32

SPI MSB/LSB First Transfers .................................................... 32

EEPROM Operations..................................................................... 35

Writing to the EEPROM ........................................................... 35

Reading from the EEPROM ..................................................... 35

Programming the EEPROM Buffer Segment......................... 36

Device Initialization Flow Charts................................................. 38

Power Dissipation and Thermal Considerations ....................... 41

Clock Speed and Driver Mode ................................................. 41

Evaluation of Operating Conditions........................................ 41

Thermally Enhanced Package Mounting Guidelines............ 42

Control Registers ............................................................................ 43

Control Register Map ................................................................ 43

Control Register Map Bit Descriptions ................................... 48

Outline Dimensions ....................................................................... 60

Ordering Guide .......................................................................... 60

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