ADF4378 datasheet(2/84 Pages) AD

2 / 84 page

Data Sheet

ADF4378

TABLE OF CONTENTS

analog.com

Rev. A | 2 of 84

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

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

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

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

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

Serial Interface Timing Characteristics...............9

Absolute Maximum Ratings.................................10

Transistor Count...............................................10

Thermal Resistance......................................... 10

Electrostatic Discharge (ESD) Ratings.............10

ESD Caution.....................................................10

Pin Configurations and Function Descriptions.....11

Typical Performance Characteristics................... 13

Theory of Operation.............................................23

Introduction.......................................................23

Output Frequency.............................................23

Circuit Description............................................ 23

Applications Information...................................... 34

Loop Filter Design............................................ 34

Reference Source Considerations................... 34

Output Phase Noise Characteristics................ 35

Power-Up and Initialization Sequence............. 36

Power Supply and Bypassing...........................37

Design and Programming Example 1:

Single ADF4378............................................. 37

Aligning Multiple ADF4378 Output Phases...... 41

Design Example 2: JESD204B/C Multichip

Clock and SYSREF Alignment....................... 43

ADC Clock and Jitter Considerations............... 45

Measuring Differential Spurs With A Single-

Ended Test Instrument................................... 48

Application Circuits.............................................. 49

Parallel ADF4378 Devices, 13 fsRMS Jitter.......49

AD9082 Error Vector Magnitude (EVM) with

ADF4378 as Clock......................................... 50

Outline Dimensions............................................. 84

Ordering Guide.................................................84

Evaluation Boards............................................ 84

REVISION HISTORY

8/2024—Rev. 0 to Rev. A

Changed Master to Main (Throughout)............................................................................................................1

Deleted Figure 65; Renumbered Sequentially............................................................................................... 23

Change to Figure 94...................................................................................................................................... 35

Changed Register Summary Section to Register Map Section..................................................................... 51

Changes to Table 44......................................................................................................................................51

Changes to Table 46......................................................................................................................................54

Changes to Table 56......................................................................................................................................57

Changes to Table 71......................................................................................................................................65

Changes to Table 74......................................................................................................................................66

Changes to Table 84......................................................................................................................................69

Changes to Table 85......................................................................................................................................70

Changes to Table 88 and Table 89................................................................................................................ 71

Changes Table 90..........................................................................................................................................72

Changes to Table 92, Table 93, and Table 94................................................................................................73

Changes to Table 95 and Table 96................................................................................................................ 74

Changes to Table 98 to Table 101................................................................................................................. 75

Changes to Table 103....................................................................................................................................76

Changes to Table 104 to Table 107............................................................................................................... 77

Changes to Table 109....................................................................................................................................78

12/2023—Revision 0: Initial Version

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