AD9551SLASHPCBZ datasheet(2/40 Pages) AD

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AD9551

Rev. B | Page 2 of 40

TABLE OF CONTENTS

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

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

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

Basic Block Diagram ........................................................................ 1

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

Functional Block Diagram .............................................................. 3

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

Reference Clock Input Characteristics ...................................... 4

Output Characteristics................................................................. 4

Jitter Characteristics (180 Hz Loop Bandwidth)...................... 5

Crystal Oscillator Characteristics............................................... 5

Power Consumption .................................................................... 5

Logic Input Pins............................................................................ 6

RESET Pin ..................................................................................... 6

Logic Output Pins......................................................................... 6

Serial Control Port ....................................................................... 6

Serial Control Port Timing ......................................................... 7

Absolute Maximum Ratings............................................................ 8

ESD Caution.................................................................................. 8

Pin Configuration and Function Descriptions............................. 9

Typical Performance Characteristics ........................................... 11

Preset Frequency Ratios................................................................. 14

Theory of Operation ...................................................................... 16

Operating Modes........................................................................ 16

Component Blocks..................................................................... 16

Holdover Mode........................................................................... 21

Jitter Tolerance............................................................................ 21

External Loop Filter Capacitor................................................. 21

Output/Input Frequency Relationship .................................... 21

Calculating Divider Values ....................................................... 22

Low Dropout (LDO) Regulators .............................................. 24

Applications Information .............................................................. 25

Thermal Performance................................................................ 25

Serial Control Port ......................................................................... 26

Serial Control Port Pin Descriptions....................................... 26

Operation of the Serial Control Port ....................................... 26

Instruction Word (16 Bits) ........................................................ 27

MSB/LSB First Transfers ........................................................... 27

Outline Dimensions ....................................................................... 40

Ordering Guide .......................................................................... 40

REVISION HISTORY

9/09—Rev. A to Rev. B

Changes to Table 25........................................................................ 33

6/09—Rev. 0 to Rev. A

Changes to Figure 23...................................................................... 23

4/09—Revision 0: Initial Version

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